List of Historic Civil Engineering Landmarks

The following is a list of Historic Civil Engineering Landmarks as designated by the American Society of Civil Engineers since it began the program in 1964. The designation is granted to projects, structures, and sites in the United States (National Historic Civil Engineering Landmarks) and the rest of the world (International Historic Civil Engineering Landmarks).

As of 2024, there are 235 designated Historic Civil Engineering Landmarks in the United States and 61 internationally, totaling 296 landmarks worldwide. [1] Sections or chapters of the American Society of Civil Engineers may also designate state or local landmarks within their areas; those landmarks are not listed here.

Ref#  | Year designated  | Name  | Image  | Built  | Location
Coordinates | Region/state  | Country  | Category

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1  | 1966  | Bollman Truss Bridge |  | 1869  | Savage
39°8′5.4″N 76°49′30.3″W﻿ / ﻿39.134833°N 76.825083°W﻿ / 39.134833; -76.825083﻿ (Bollman Truss Bridge) | Maryland | United States | bridges
2  | 1967  | Bidwell Bar Bridge |  | 1856  | Oroville
39°32′14.8″N 121°27′15.6″W﻿ / ﻿39.537444°N 121.454333°W﻿ / 39.537444; -121.454333﻿ (Bidwell Bar Bridge) | California | United States | bridges
3  | 1967  | Erie Canal |  | 1825  | Hudson River to Lake Erie
43°2′35.6″N 76°1′20.2″W﻿ / ﻿43.043222°N 76.022278°W﻿ / 43.043222; -76.022278﻿ (Erie Canal) | New York | United States | water transportation
4  | 1967  | Middlesex Canal |  | 1803  | Middlesex County
42°30′21.4″N 71°9′25.8″W﻿ / ﻿42.505944°N 71.157167°W﻿ / 42.505944; -71.157167﻿ (Middlesex Canal) | Massachusetts | United States | water transportation
5  | 1968  | Central Pacific Railroad |  | 1863–1869  | Sacramento eastward
38°34′57″N 121°30′22.8″W﻿ / ﻿38.58250°N 121.506333°W﻿ / 38.58250; -121.506333﻿ (Central Pacific Railroad) | California | United States | roads & rails
6  | 1968  | Durango-Silverton Branch of the D&RGW RR |  | 1882  | Durango
37°35′27.7″N 107°46′41.6″W﻿ / ﻿37.591028°N 107.778222°W﻿ / 37.591028; -107.778222﻿ (Durango-Silverton Branch of the D&RGW RR) | Colorado | United States | roads & rails
7  | 1968  | Ellicott's Stone |  | 1799  | Mobile
30°59′52″N 88°1′21.1″W﻿ / ﻿30.99778°N 88.022528°W﻿ / 30.99778; -88.022528﻿ (Ellicott's Stone) | Alabama | United States | surveys & maps
8  | 1968  | Acequias of San Antonio |  | 1718  | San Antonio
29°19′57.1″N 98°27′41.1″W﻿ / ﻿29.332528°N 98.461417°W﻿ / 29.332528; -98.461417﻿ (Acequias of San Antonio) | Texas | United States | water supply & control
9  | 1968  | Joining of the Rails - Transcontinental Railroad |  | 1869  | Promontory
41°37′4.7″N 112°33′5.8″W﻿ / ﻿41.617972°N 112.551611°W﻿ / 41.617972; -112.551611﻿ (Joining of the Rails - Transcontinental Railroad) | Utah | United States | roads & rails
10  | 1968  | Wheeling Suspension Bridge |  | 1849  | Wheeling
40°4′12.8″N 80°43′36.7″W﻿ / ﻿40.070222°N 80.726861°W﻿ / 40.070222; -80.726861﻿ (Wheeling Suspension Bridge) | West Virginia | United States | bridges
11  | 1969  | Alvord Lake Bridge |  | 1889  | San Francisco
37°46′8.4″N 122°27′17.6″W﻿ / ﻿37.769000°N 122.454889°W﻿ / 37.769000; -122.454889﻿ (Alvord Lake Bridge) | California | United States | bridges
12  | 1969  | Charleston - Hamburg Railroad |  | 1833  | Charleston to Hamburg
32°47′22.9″N 79°56′15.8″W﻿ / ﻿32.789694°N 79.937722°W﻿ / 32.789694; -79.937722﻿ (Charleston - Hamburg Railroad) | South Carolina | United States | roads & rails
13  | 1970  | Ascutney Mill Dam |  | 1834  | Windsor
43°28′35″N 72°23′44.5″W﻿ / ﻿43.47639°N 72.395694°W﻿ / 43.47639; -72.395694﻿ (Ascutney Mill Dam) | Vermont | United States | dams
14  | 1970  | Bridgeport Covered Bridge |  | 1862  | Nevada County
39°17′34.2″N 121°11′41.7″W﻿ / ﻿39.292833°N 121.194917°W﻿ / 39.292833; -121.194917﻿ (Bridgeport Covered Bridge) | California | United States | bridges
15  | 1970  | Cornish–Windsor Covered Bridge |  | 1866, rebuilt 1988  | Windsor to Cornish
43°28′25.3″N 72°23′2.1″W﻿ / ﻿43.473694°N 72.383917°W﻿ / 43.473694; -72.383917﻿ (Cornish–Windsor Covered Bridge) | Vermont and New Hampshire | United States | bridges
16  | 1970  | Frankford Avenue Bridge |  | 1697  | Philadelphia
40°2′36.7″N 75°1′14″W﻿ / ﻿40.043528°N 75.02056°W﻿ / 40.043528; -75.02056﻿ (Frankford Avenue Bridge) | Pennsylvania | United States | bridges
17  | 1970  | Potowmack Canal and Locks |  | 1799  | Great Falls
38°59′25.3″N 77°14′58.1″W﻿ / ﻿38.990361°N 77.249472°W﻿ / 38.990361; -77.249472﻿ (Potowmack Canal and Locks) | Virginia | United States | water transportation
18  | 1970  | Theodore Roosevelt Dam & Salt River Project |  | 1911  | 33°40′17.9″N 111°9′40.8″W﻿ / ﻿33.671639°N 111.161333°W﻿ / 33.671639; -111.161333﻿ (Theodore Roosevelt Dam & Salt River Project) | Arizona | United States | water supply & control
19  | 1970  | Union Canal Tunnel |  | 1828  | Lebanon
40°20′58.5″N 76°27′41″W﻿ / ﻿40.349583°N 76.46139°W﻿ / 40.349583; -76.46139﻿ (Union Canal Tunnel) | Pennsylvania | United States | water transportation
20  | 1971  | Bethlehem Waterworks |  | 1761  | Bethlehem
40°37′8.7″N 75°22′58.2″W﻿ / ﻿40.619083°N 75.382833°W﻿ / 40.619083; -75.382833﻿ (Bethlehem Waterworks) | Pennsylvania | United States | water supply & control
21  | 1971  | Druid Lake Dam |  | 1871  | Baltimore
39°19′7″N 76°37′53″W﻿ / ﻿39.31861°N 76.63139°W﻿ / 39.31861; -76.63139﻿ (Druid Lake Dam) | Maryland | United States | dams
22  | 1971  | Eads Bridge |  | 1874  | St. Louis
38°37′44″N 90°10′43.3″W﻿ / ﻿38.62889°N 90.178694°W﻿ / 38.62889; -90.178694﻿ (Eads Bridge) | Missouri | United States | bridges
23  | 1971  | First Owens River - Los Angeles Aqueduct |  | 1913  | Owens Valley
36°58′32.4″N 118°12′38″W﻿ / ﻿36.975667°N 118.21056°W﻿ / 36.975667; -118.21056﻿ (First Owens River - Los Angeles Aqueduct) | California | United States | water supply & control
24  | 1971  | Mormon Tabernacle |  | 1867  | Salt Lake City
40°46′13.6″N 111°53′35.3″W﻿ / ﻿40.770444°N 111.893139°W﻿ / 40.770444; -111.893139﻿ (Mormon Tabernacle) | Utah | United States | buildings
25  | 1972  | Cabin John Aqueduct |  | 1863  | Cabin John
38°58′22″N 77°8′54.9″W﻿ / ﻿38.97278°N 77.148583°W﻿ / 38.97278; -77.148583﻿ (Cabin John Aqueduct) | Maryland | United States | water supply & control
26  | 1972  | Chesbroughs Water Supply System Chicago |  | 1869  | Chicago
41°53′49.8″N 87°37′27.9″W﻿ / ﻿41.897167°N 87.624417°W﻿ / 41.897167; -87.624417﻿ (Chesbroughs Water Supply System Chicago) | Illinois | United States | water supply & control
27  | 1972  | Brooklyn Bridge |  | 1883  | New York City
40°42′22″N 73°59′48.8″W﻿ / ﻿40.70611°N 73.996889°W﻿ / 40.70611; -73.996889﻿ (Brooklyn Bridge) | New York | United States | bridges
28  | 1972  | Gunnison Tunnel |  | 1909  | Montrose
38°29′36″N 107°43′17″W﻿ / ﻿38.49333°N 107.72139°W﻿ / 38.49333; -107.72139﻿ (Gunnison Tunnel) | Colorado | United States | tunnels
29  | 1972  | Roebling's Delaware Aqueduct of the Delaware & Hudson Canal |  | 1848, restored 1983  | Lackawaxen to Minisink Ford
41°28′57.5″N 74°59′4.1″W﻿ / ﻿41.482639°N 74.984472°W﻿ / 41.482639; -74.984472﻿ (Roebling's Delaware Aqueduct of the Delaware & Hudson Canal) | Pennsylvania & New York | United States | water transportation
30  | 1972  | Miami Conservancy District |  | 1922  | near Dayton
39°45′49.2″N 84°11′29.2″W﻿ / ﻿39.763667°N 84.191444°W﻿ / 39.763667; -84.191444﻿ (Miami Conservancy District) | Ohio | United States | water supply & control
31  | 1973  | Buffalo Bill Dam |  | 1910  | Cody
44°30′5.3″N 109°10′59.4″W﻿ / ﻿44.501472°N 109.183167°W﻿ / 44.501472; -109.183167﻿ (Buffalo Bill Dam) | Wyoming | United States | dams
32  | 1973  | Cheesman Reservoir |  | 1905  | Southwest of Denver
39°12′27″N 105°16′20.1″W﻿ / ﻿39.20750°N 105.272250°W﻿ / 39.20750; -105.272250﻿ (Cheesman Reservoir) | Colorado | United States | dams
33  | 1973  | Embudo Stream Gauging Station |  | 1889  | Embudo
36°12′18.4″N 105°57′49.2″W﻿ / ﻿36.205111°N 105.963667°W﻿ / 36.205111; -105.963667﻿ (Embudo Stream Gauging Station) | New Mexico | United States | water supply & control
34  | 1973  | Ingalls Building |  | 1903  | Cincinnati
39°6′1″N 84°30′45.1″W﻿ / ﻿39.10028°N 84.512528°W﻿ / 39.10028; -84.512528﻿ (Ingalls Building) | Ohio | United States | buildings
35  | 1973  | Pelton Impulse Water Wheel |  | 1878  | Camptonville
39°27′7″N 121°2′55″W﻿ / ﻿39.45194°N 121.04861°W﻿ / 39.45194; -121.04861﻿ (Pelton Impulse Water Wheel) | California | United States | power generation
36  | 1973  | Starrucca Viaduct |  | 1848  | Lanesboro
41°57′51.3″N 75°35′0.6″W﻿ / ﻿41.964250°N 75.583500°W﻿ / 41.964250; -75.583500﻿ (Starrucca Viaduct) | Pennsylvania | United States | bridges
37  | 1974  | Kansas City Park and Boulevard System |  | 1893 to 1915  | Kansas City
39°4′57″N 94°33′18″W﻿ / ﻿39.08250°N 94.55500°W﻿ / 39.08250; -94.55500﻿ (Kansas City Park and Boulevard System) | Missouri | United States | surveys & maps
38  | 1974  | Milwaukee Metropolitan Sewage Treatment Plant, home of Milorganite[2] |  | 1919  | Milwaukee
43°1′21.3″N 87°53′57.3″W﻿ / ﻿43.022583°N 87.899250°W﻿ / 43.022583; -87.899250﻿ (Milwaukee Metropolitan Sewage Treatment Plant) | Wisconsin | United States | water supply & control
39  | 1974  | Philadelphia Municipal Water Supply |  | 1801  | Philadelphia
39°57′56″N 75°10′51″W﻿ / ﻿39.96556°N 75.18083°W﻿ / 39.96556; -75.18083﻿ (Philadelphia Municipal Water Supply) | Pennsylvania | United States | water supply & control
40  | 1974  | Stone Arch Bridge |  | 1883  | Minneapolis
44°58′50.8″N 93°15′12.3″W﻿ / ﻿44.980778°N 93.253417°W﻿ / 44.980778; -93.253417﻿ (Stone Arch Bridge) | Minnesota | United States | bridges
41  | 1975  | Castillo de San Marcos |  | 1695  | St. Augustine
29°53′52″N 81°18′41″W﻿ / ﻿29.89778°N 81.31139°W﻿ / 29.89778; -81.31139﻿ (Castillo de San Marcos) | Florida | United States | buildings
42  | 1975  | Croton Water Supply System |  | 1842  | New York City
41°0′42.5″N 73°52′36.4″W﻿ / ﻿41.011806°N 73.876778°W﻿ / 41.011806; -73.876778﻿ (Croton Water Supply System) | New York | United States | water supply & control
43  | 1975  | Folsom Hydroelectric Power System |  | 1895  | Folsom
38°40′46.6″N 121°10′37.2″W﻿ / ﻿38.679611°N 121.177000°W﻿ / 38.679611; -121.177000﻿ (Folsom Hydroelectric Power System) | California | United States | power generation
44  | 1975  | Granite Railway |  | 1826  | Quincy
42°14′44.6″N 71°2′9″W﻿ / ﻿42.245722°N 71.03583°W﻿ / 42.245722; -71.03583﻿ (Granite Railway) | Massachusetts | United States | roads & rails
45  | 1975  | Hoosac Tunnel |  | 1875  | Berkshire County
42°40′31.1″N 73°2′45.1″W﻿ / ﻿42.675306°N 73.045861°W﻿ / 42.675306; -73.045861﻿ (Hoosac Tunnel) | Massachusetts | United States | tunnels
46  | 1975  | Lawrence Experiment Station |  | 1886  | Lawrence
42°41′53.8″N 71°9′55.7″W﻿ / ﻿42.698278°N 71.165472°W﻿ / 42.698278; -71.165472﻿ (Lawrence Experiment Station) | Massachusetts | United States | research & educational
47  | 1975  | Marlette Lake Water System |  | 1873 to 1887  | Virginia City
39°13′9.5″N 119°47′20.1″W﻿ / ﻿39.219306°N 119.788917°W﻿ / 39.219306; -119.788917﻿ (Marlette Lake Water System) | Nevada | United States | water supply & control
48  | 1975  | Mount Washington Cog Railway |  | 1869  | Mount Washington
44°16′26″N 71°19′55″W﻿ / ﻿44.27389°N 71.33194°W﻿ / 44.27389; -71.33194﻿ (Mount Washington Cog Railway) | New Hampshire | United States | roads & rails
49  | 1975  | Smithfield Street Bridge |  | 1883  | Pittsburgh
40°26′5.4″N 80°0′7.7″W﻿ / ﻿40.434833°N 80.002139°W﻿ / 40.434833; -80.002139﻿ (Smithfield Street Bridge) | Pennsylvania | United States | bridges
50  | 1975  | Tunkhannock Viaduct |  | 1915  | Nicholson
41°37′34.2″N 75°46′34.4″W﻿ / ﻿41.626167°N 75.776222°W﻿ / 41.626167; -75.776222﻿ (Tunkhannock Viaduct) | Pennsylvania | United States | bridges
51  | 1976  | Crozet's Blue Ridge Tunnel |  | 1858  | Waynesboro
38°2′3.1″N 78°51′28.4″W﻿ / ﻿38.034194°N 78.857889°W﻿ / 38.034194; -78.857889﻿ (Crozet's Blue Ridge Tunnel) | Virginia | United States | tunnels
52  | 1976  | Cumbres and Toltec Scenic Railroad |  | 1880  | Chama to Antonito
36°59′42″N 106°17′51.1″W﻿ / ﻿36.99500°N 106.297528°W﻿ / 36.99500; -106.297528﻿ (Cumbres and Toltec Scenic Railroad) | New Mexico and Colorado | United States | roads & rails
53  | 1976  | Elephant Butte Dam |  | 1916  | Truth or Consequences
33°9′14.9″N 107°11′31.3″W﻿ / ﻿33.154139°N 107.192028°W﻿ / 33.154139; -107.192028﻿ (Elephant Butte Dam) | New Mexico | United States | dams
54  | 1976  | First Concrete Pavement |  | 1893  | Bellefontaine
40°21′37.5″N 83°45′33.6″W﻿ / ﻿40.360417°N 83.759333°W﻿ / 40.360417; -83.759333﻿ (First Concrete Pavement) | Ohio | United States | roads & rails
55  | 1976  | International Boundary Marker No. 1[3] |  | 1855  | Doña Ana County
31°47′2″N 106°31′47.1″W﻿ / ﻿31.78389°N 106.529750°W﻿ / 31.78389; -106.529750﻿ (International Boundary Marker No. 1) | New Mexico | United States | surveys & maps
56  | 1976  | King's Road |  | 1766 to 1775  | New Smyrna
29°38′23.4″N 81°16′50.3″W﻿ / ﻿29.639833°N 81.280639°W﻿ / 29.639833; -81.280639﻿ (King's Road) | Florida | United States | roads & rails
57  | 1976  | National Road |  | 1811–1839  | Cumberland to Vandalia
39°57′38.7″N 82°27′2″W﻿ / ﻿39.960750°N 82.45056°W﻿ / 39.960750; -82.45056﻿ (National Road) | Maryland to Illinois | United States | roads & rails
58  | 1977  | Charlestown Naval Dry Dock |  | 1833  | Boston
42°22′23.7″N 71°3′19.3″W﻿ / ﻿42.373250°N 71.055361°W﻿ / 42.373250; -71.055361﻿ (Charlestown Naval Dry Dock) | Massachusetts | United States | water transportation
59  | 1977  | City Plan of Savannah |  | 1733  | Savannah
32°4′32″N 81°5′31″W﻿ / ﻿32.07556°N 81.09194°W﻿ / 32.07556; -81.09194﻿ (City Plan of Savannah) | Georgia | United States | surveys & maps
60  | 1977  | Great Falls Raceway and Power System |  | 1800  | Paterson
40°54′55.1″N 74°10′52.1″W﻿ / ﻿40.915306°N 74.181139°W﻿ / 40.915306; -74.181139﻿ (Great Falls Raceway and Power System) | New Jersey | United States | power generation
61  | 1977  | First New York Subway |  | 1904  | New York City
40°42′45.3″N 74°0′24.2″W﻿ / ﻿40.712583°N 74.006722°W﻿ / 40.712583; -74.006722﻿ (First New York Subway) | New York | United States | roads & rails
62  | 1977  | Mason–Dixon line |  | 1767  | 39°43′16.1″N 80°7′5.3″W﻿ / ﻿39.721139°N 80.118139°W﻿ / 39.721139; -80.118139﻿ (Mason–Dixon line) | Maryland & Pennsylvania | United States | surveys & maps
63  | 1977  | Minot's Ledge Lighthouse |  | 1860  | off Scituate
42°16′11″N 70°45′32.9″W﻿ / ﻿42.26972°N 70.759139°W﻿ / 42.26972; -70.759139﻿ (Minot's Ledge Lighthouse) | Massachusetts | United States | water transportation
64  | 1977  | Mullan Road |  | 1862  | Walla Walla
46°46′8.3″N 118°12′22.6″W﻿ / ﻿46.768972°N 118.206278°W﻿ / 46.768972; -118.206278﻿ (Mullan Road) | Washington | United States | roads & rails
65  | 1977  | Dry Dock No 1 Norfolk Naval Shipyard |  | 1833  | Portsmouth
36°49′14″N 76°17′35″W﻿ / ﻿36.82056°N 76.29306°W﻿ / 36.82056; -76.29306﻿ (Gosport Naval Dry Docks) | Virginia | United States | water transportation
66  | 1977  | Reversal of the Chicago River |  | 1900  | Chicago
41°42′18″N 87°56′2″W﻿ / ﻿41.70500°N 87.93389°W﻿ / 41.70500; -87.93389﻿ (Reversal of the Chicago River) | Illinois | United States | water transportation
67  | 1977  | Vulcan Street Plant |  | 1882  | Appleton
44°15′29.2″N 88°23′50.2″W﻿ / ﻿44.258111°N 88.397278°W﻿ / 44.258111; -88.397278﻿ (Vulcan Street Plant) | Wisconsin | United States | power generation
68  | 1977  | William E. Ward House |  | 1876  | Rye Brook
41°1′32.5″N 73°40′3.1″W﻿ / ﻿41.025694°N 73.667528°W﻿ / 41.025694; -73.667528﻿ (William E. Ward House) | New York | United States | buildings
69  | 1978  | Boston Subway |  | 1897  | Boston
42°21′23.8″N 71°3′43.6″W﻿ / ﻿42.356611°N 71.062111°W﻿ / 42.356611; -71.062111﻿ (Boston Subway) | Massachusetts | United States | roads & rails
70  | 1978  | Dunlap's Creek Bridge |  | 1839  | Brownsville
40°1′17.2″N 79°53′17.2″W﻿ / ﻿40.021444°N 79.888111°W﻿ / 40.021444; -79.888111﻿ (Dunlap's Creek Bridge) | Pennsylvania | United States | bridges
71  | 1978  | Hudson and Manhattan Railroad Tunnel |  | 1908  | Jersey City to New York City
40°43′56.7″N 74°1′11.6″W﻿ / ﻿40.732417°N 74.019889°W﻿ / 40.732417; -74.019889﻿ (Hudson and Manhattan Railroad Tunnel) | New Jersey & New York | United States | tunnels
72  | 1978  | Newark International Airport |  | 1928  | Newark
40°41′22.2″N 74°10′28.2″W﻿ / ﻿40.689500°N 74.174500°W﻿ / 40.689500; -74.174500﻿ (Newark International Airport) | New Jersey | United States | aviation
73  | 1978  | United States Military Academy |  | 1813  | West Point
41°23′34.8″N 73°57′28.8″W﻿ / ﻿41.393000°N 73.958000°W﻿ / 41.393000; -73.958000﻿ (United States Military Academy) | New York | United States | research & educational
74  | 1979  | Cleveland Hopkins Airport |  | 1925  | Cleveland
41°24′45″N 81°50′53″W﻿ / ﻿41.41250°N 81.84806°W﻿ / 41.41250; -81.84806﻿ (Cleveland Hopkins Airport) | Ohio | United States | aviation
75  | 1979  | Fink Deck Truss Bridge |  | 1870  | Lynchburg
37°26′24.3″N 79°9′56″W﻿ / ﻿37.440083°N 79.16556°W﻿ / 37.440083; -79.16556﻿ (Fink Deck Truss Bridge) | Virginia | United States | bridges
76  | 1979  | Fink Through Truss Bridge |  | 1858  | Hamden
40°36′14.3″N 74°54′8.1″W﻿ / ﻿40.603972°N 74.902250°W﻿ / 40.603972; -74.902250﻿ (Fink Through Truss Bridge) | New Jersey | United States | bridges
77  | 1979  | Iron Bridge |  | 1779  | Ironbridge
52°37′38.4″N 2°29′7.6″W﻿ / ﻿52.627333°N 2.485444°W﻿ / 52.627333; -2.485444﻿ (Iron Bridge) | West Midlands | England | bridges
78  | 1979  | Moffat Tunnel |  | 1928  | Winter Park
39°53′37.5″N 105°42′41.3″W﻿ / ﻿39.893750°N 105.711472°W﻿ / 39.893750; -105.711472﻿ (Moffat Tunnel) | Colorado | United States | tunnels
79  | 1979  | Rockville Bridge |  | 1902  | Harrisburg
40°19′59.9″N 76°54′38.8″W﻿ / ﻿40.333306°N 76.910778°W﻿ / 40.333306; -76.910778﻿ (Rockville Bridge) | Pennsylvania | United States | bridges
80  | 1980  | Goodyear Airdock |  | 1929  | Akron
41°1′54.9″N 81°28′14.6″W﻿ / ﻿41.031917°N 81.470722°W﻿ / 41.031917; -81.470722﻿ (Goodyear Airdock) | Ohio | United States | aviation
81  | 1980  | Hydraulic-Inclined Plane System of the Morris Canal |  | 1831  | Waterloo Village
40°54′55.2″N 74°21′23.8″W﻿ / ﻿40.915333°N 74.356611°W﻿ / 40.915333; -74.356611﻿ (Hydraulic-Inclined Plane System of the Morris Canal) | New Jersey | United States | water transportation
82  | 1981  | Borden Base Line |  | 1831  | Hatfield
42°25′33.7″N 72°37′9″W﻿ / ﻿42.426028°N 72.61917°W﻿ / 42.426028; -72.61917﻿ (Borden Base Line) | Massachusetts | United States | surveys & maps
83  | 1981  | Chain of Rocks Water Purification Plant |  | 1904  | St. Louis
38°45′18.5″N 90°11′11.6″W﻿ / ﻿38.755139°N 90.186556°W﻿ / 38.755139; -90.186556﻿ (Chain of Rocks Water Purification Plant) | Missouri | United States | water supply & control
84  | 1981  | Charles River Basin Project |  | 1910  | Boston
42°22′3.8″N 71°4′12.8″W﻿ / ﻿42.367722°N 71.070222°W﻿ / 42.367722; -71.070222﻿ (Charles River Basin Project) | Massachusetts | United States | water supply & control
85  | 1981  | Cortland Street Drawbridge |  | 1902  | Chicago
41°55′1.1″N 87°39′51.4″W﻿ / ﻿41.916972°N 87.664278°W﻿ / 41.916972; -87.664278﻿ (Cortland Street Drawbridge) | Illinois | United States | bridges
86  | 1981  | George Washington Bridge |  | 1931  | Fort Lee to New York City
40°51′6.1″N 73°57′9.7″W﻿ / ﻿40.851694°N 73.952694°W﻿ / 40.851694; -73.952694﻿ (George Washington Bridge) | New Jersey & New York | United States | bridges
87  | 1981  | Louisville Water Works |  | 1875 to 1896  | Louisville
38°16′50″N 85°42′4.3″W﻿ / ﻿38.28056°N 85.701194°W﻿ / 38.28056; -85.701194﻿ (Louisville Water Works) | Kentucky | United States | water supply & control
88  | 1981  | Montgomery Bell's Tunnel |  | 1818  | Cheatham County
36°8′48.5″N 87°7′19.3″W﻿ / ﻿36.146806°N 87.122028°W﻿ / 36.146806; -87.122028﻿ (Montgomery Bell's Tunnel) | Tennessee | United States | tunnels
89  | 1981  | Snoqualmie Falls Cavity Generating Station |  | 1899  | Snoqualmie
47°32′39.5″N 121°50′29.3″W﻿ / ﻿47.544306°N 121.841472°W﻿ / 47.544306; -121.841472﻿ (Snoqualmie Falls Cavity Generating Station) | Washington | United States | power generation
90  | 1981  | Union Station |  | 1894  | St. Louis
38°37′41.2″N 90°12′28.8″W﻿ / ﻿38.628111°N 90.208000°W﻿ / 38.628111; -90.208000﻿ (Union Station) | Missouri | United States | roads & rails
91  | 1981  | Washington Monument |  | 1885  | Washington
38°53′22.1″N 77°2′6.9″W﻿ / ﻿38.889472°N 77.035250°W﻿ / 38.889472; -77.035250﻿ (Washington Monument) | District of Columbia | United States | buildings
92  | 1981  | Whipple Truss Bridge  |  | 1855  | Schenectady
42°49′5.2″N 73°55′27″W﻿ / ﻿42.818111°N 73.92417°W﻿ / 42.818111; -73.92417﻿ (Whipple Truss Bridge) | New York | United States | bridges
93  | 1982  | Carrollton Viaduct |  | 1829  | Baltimore
39°16′31.5″N 76°39′18″W﻿ / ﻿39.275417°N 76.65500°W﻿ / 39.275417; -76.65500﻿ (Carrollton Viaduct) | Maryland | United States | bridges
94  | 1982  | Detroit-Windsor Tunnel |  | 1930  | Detroit
42°19′28″N 83°2′25.4″W﻿ / ﻿42.32444°N 83.040389°W﻿ / 42.32444; -83.040389﻿ (Detroit-Windsor Tunnel) | Michigan | United States | tunnels
95  | 1982  | Eads South Pass Navigation Works |  | 1879  | Port Eads
28°59′50″N 89°8′38″W﻿ / ﻿28.99722°N 89.14389°W﻿ / 28.99722; -89.14389﻿ (Eads South Pass Navigation Works) | Louisiana | United States | water transportation
96  | 1982  | Holland Tunnel |  | 1927  | Jersey City to New York City
40°43′38.9″N 74°1′16″W﻿ / ﻿40.727472°N 74.02111°W﻿ / 40.727472; -74.02111﻿ (Holland Tunnel) | New Jersey & New York | United States | tunnels
97  | 1982  | John A. Roebling Suspension Bridge |  | 1866  | Cincinnati
39°5′34.8″N 84°30′35.6″W﻿ / ﻿39.093000°N 84.509889°W﻿ / 39.093000; -84.509889﻿ (John A. Roebling Suspension Bridge) | Ohio | United States | bridges
98  | 1982  | Kinzua Railway Viaduct |  | 1882  | McKean County
41°45′47.3″N 78°35′21.1″W﻿ / ﻿41.763139°N 78.589194°W﻿ / 41.763139; -78.589194﻿ (Kinzua Railway Viaduct) | Pennsylvania | United States | bridges
99  | 1982  | Rogue River Bridge |  | 1931  | Gold Beach
42°25′40.5″N 124°24′47.5″W﻿ / ﻿42.427917°N 124.413194°W﻿ / 42.427917; -124.413194﻿ (Rogue River Bridge) | Oregon | United States | bridges
100  | 1982  | Second Street Bridge |  | 1886  | Allegan
42°31′32.7″N 85°50′54.6″W﻿ / ﻿42.525750°N 85.848500°W﻿ / 42.525750; -85.848500﻿ (Second Street Bridge) | Michigan | United States | bridges
101  | 1982  | Watertown Arsenal |  | 1859  | Watertown
42°21′44″N 71°9′58″W﻿ / ﻿42.36222°N 71.16611°W﻿ / 42.36222; -71.16611﻿ (Watertown Arsenal) | Massachusetts | United States | research & educational
102  | 1983  | Atlantic City Convention Hall |  | 1929  | Atlantic City
39°21′18″N 74°26′19.1″W﻿ / ﻿39.35500°N 74.438639°W﻿ / 39.35500; -74.438639﻿ (Atlantic City Convention Hall) | New Jersey | United States | buildings
103  | 1983  | Bailey Island Bridge |  | 1928  | Harpswell
43°44′57.1″N 69°59′19.3″W﻿ / ﻿43.749194°N 69.988694°W﻿ / 43.749194; -69.988694﻿ (Bailey Island Bridge) | Maine | United States | bridges
104  | 1983  | Blenheim Bridge |  | 1855  | North Blenheim
42°28′18.4″N 74°26′29.4″W﻿ / ﻿42.471778°N 74.441500°W﻿ / 42.471778; -74.441500﻿ (Blenheim Bridge) | New York | United States | bridges
105  | 1983  | Iron Building of the U.S. Army Arsenal |  | 1859  | Watervliet
42°43′5.9″N 73°42′14.5″W﻿ / ﻿42.718306°N 73.704028°W﻿ / 42.718306; -73.704028﻿ (Iron Building of the U.S. Army Arsenal) | New York | United States | buildings
106  | 1983  | Ohio Canal System |  | 1848  | Akron
40°52′39.2″N 81°35′1.4″W﻿ / ﻿40.877556°N 81.583722°W﻿ / 40.877556; -81.583722﻿ (Ohio Canal System) | Ohio | United States | water transportation
107  | 1983  | Peavey–Haglin Experimental Concrete Grain Elevator |  | 1900  | St. Louis Park
44°56′32.7″N 93°20′42.8″W﻿ / ﻿44.942417°N 93.345222°W﻿ / 44.942417; -93.345222﻿ (Peavey–Haglin Experimental Concrete Grain Elevator) | Minnesota | United States | buildings
108  | 1983  | Sault Ste. Marie Hydroelectric Complex |  | 1902  | Sault Ste. Marie
46°29′50.8″N 84°19′55.7″W﻿ / ﻿46.497444°N 84.332139°W﻿ / 46.497444; -84.332139﻿ (Sault Ste. Marie Hydroelectric Complex) | Michigan | United States | power generation
109  | 1983  | Zuiderzee Enclosure Dam |  | 1927 to 1932  | Zaandam
52°59′37.5″N 5°9′19.1″E﻿ / ﻿52.993750°N 5.155306°E﻿ / 52.993750; 5.155306﻿ (Zuiderzee Enclosure Dam) | North Holland | Netherlands | water supply & control
110  | 1984  | Columbia River Scenic Highway |  | 1922  | Portland
45°39′19.3″N 121°54′13.2″W﻿ / ﻿45.655361°N 121.903667°W﻿ / 45.655361; -121.903667﻿ (Columbia River Scenic Highway) | Oregon | United States | roads & rails
111  | 1984  | Columbia-Wrightsville Bridge |  | 1930  | Columbia
40°1′42.4″N 76°31′5.6″W﻿ / ﻿40.028444°N 76.518222°W﻿ / 40.028444; -76.518222﻿ (Columbia-Wrightsville Bridge) | Pennsylvania | United States | bridges
112  | 1984  | Golden Gate Bridge |  | 1937  | San Francisco
37°49′11.7″N 122°28′42.7″W﻿ / ﻿37.819917°N 122.478528°W﻿ / 37.819917; -122.478528﻿ (Golden Gate Bridge) | California | United States | bridges
113  | 1984  | Hoover Dam |  | 1935  | Boulder City
36°0′57.7″N 114°44′14.8″W﻿ / ﻿36.016028°N 114.737444°W﻿ / 36.016028; -114.737444﻿ (Hoover Dam) | Nevada & Arizona | United States | dams
114  | 1984  | Lowell Waterpower System |  | 1821  | Lowell
42°38′48.5″N 71°18′41.6″W﻿ / ﻿42.646806°N 71.311556°W﻿ / 42.646806; -71.311556﻿ (Lowell Waterpower System) | Massachusetts | United States | power generation
115  | 1984  | Panama Canal |  | 1914  | Colón to Panama City9°7′2.2″N 79°43′7.6″W﻿ / ﻿9.117278°N 79.718778°W﻿ / 9.117278; -79.718778﻿ (Panama Canal) |  | Panama | water transportation
116  | 1984  | Rocky River Pumped Storage Hydro-Plant |  | 1925  | New Milford
41°34′49.7″N 73°26′13.2″W﻿ / ﻿41.580472°N 73.437000°W﻿ / 41.580472; -73.437000﻿ (Rocky River Pumped Storage Hydro-Plant) | Connecticut | United States | power generation
117  | 1985  | Bayonne Bridge |  | 1931  | Bayonne to Staten Island
40°38′29.8″N 74°8′31.6″W﻿ / ﻿40.641611°N 74.142111°W﻿ / 40.641611; -74.142111﻿ (Bayonne Bridge) | New Jersey & New York | United States | bridges
118  | 1985  | Beginning Point of the U.S. Public Land Survey |  | 1785  | Liverpool
40°38′19.7″N 80°31′8.4″W﻿ / ﻿40.638806°N 80.519000°W﻿ / 40.638806; -80.519000﻿ (Beginning Point of the U.S. Public Land Survey) | Ohio | United States | surveys & maps
119  | 1985  | Cape Cod Canal |  | 1914  | Barnstable County
41°45′51.1″N 70°34′6.3″W﻿ / ﻿41.764194°N 70.568417°W﻿ / 41.764194; -70.568417﻿ (Cape Cod Canal) | Massachusetts | United States | water transportation
120  | 1985  | Chesapeake and Delaware Canal |  | 1828 (rebuilt 1927)  | New Castle
39°32′34″N 75°43′14″W﻿ / ﻿39.54278°N 75.72056°W﻿ / 39.54278; -75.72056﻿ (Chesapeake and Delaware Canal) | Delaware | United States | water transportation
121  | 1985  | Davis Island Lock and Dam |  | 1885  | Pittsburgh
40°29′35″N 80°3′56″W﻿ / ﻿40.49306°N 80.06556°W﻿ / 40.49306; -80.06556﻿ (Davis Island Lock and Dam) | Pennsylvania | United States | water transportation
122  | 1985  | Forth Railway Bridge |  | 1890  | North Queensferry to South Queensferry
56°0′1.5″N 3°23′19.4″W﻿ / ﻿56.000417°N 3.388722°W﻿ / 56.000417; -3.388722﻿ (Forth Railway Bridge) |  | Scotland | bridges
123  | 1985  | Going-to-the-Sun Road |  | 1932  | Glacier National Park
48°41′42″N 113°49′1.2″W﻿ / ﻿48.69500°N 113.817000°W﻿ / 48.69500; -113.817000﻿ (Going-to-the-Sun Road) | Montana | United States | roads & rails
124  | 1985  | High Bridge |  | 1877  | Jessamine & Mercer Counties
37°49′1.7″N 84°43′12.4″W﻿ / ﻿37.817139°N 84.720111°W﻿ / 37.817139; -84.720111﻿ (High Bridge) | Kentucky | United States | bridges
125  | 1985  | Statue of Liberty |  | 1886  | New York Harbor
40°41′21.5″N 74°2′40.4″W﻿ / ﻿40.689306°N 74.044556°W﻿ / 40.689306; -74.044556﻿ (Statue of Liberty) | New York[4] | United States | buildings
126  | 1986  | White River Concrete Arch Bridge |  | 1930  | Cotter
36°16′2″N 92°32′39″W﻿ / ﻿36.26722°N 92.54417°W﻿ / 36.26722; -92.54417﻿ (White River Concrete Arch Bridge) | Arkansas | United States | bridges
127  | 1986  | Cranetown Triangulation Site |  | 1817  | Cedar Grove
40°49′43.9″N 74°13′27.1″W﻿ / ﻿40.828861°N 74.224194°W﻿ / 40.828861; -74.224194﻿ (Cranetown Triangulation Site) | New Jersey | United States | surveys & maps
128  | 1986  | Eiffel Tower |  | 1889  | Paris
48°51′30.2″N 2°17′40.2″E﻿ / ﻿48.858389°N 2.294500°E﻿ / 48.858389; 2.294500﻿ (Eiffel Tower) | Île-de-France | France | buildings
129  | 1986  | El Camino Real |  | 1598–1800s  | Santa Fe and Mexico City
34°3′38.7″N 106°53′36.6″W﻿ / ﻿34.060750°N 106.893500°W﻿ / 34.060750; -106.893500﻿ (El Camino Real) | New Mexico | United States and Mexico | roads & rails
130  | 1986  | El Camino Real (The Royal Road) Eastern Branch |  | from 16th century  | San Antonio
29°26′45.8″N 98°30′12.3″W﻿ / ﻿29.446056°N 98.503417°W﻿ / 29.446056; -98.503417﻿ (El Camino Real (The Royal Road) Eastern Branch) | Texas | United States | roads & rails
131  | 1986  | New Castle Ice Harbor |  | 1803  | New Castle
39°39′28″N 75°33′39″W﻿ / ﻿39.65778°N 75.56083°W﻿ / 39.65778; -75.56083﻿ (New Castle Ice Harbor) | Delaware | United States | water transportation
132  | 1986  | Norris Dam |  | 1936  | Knoxville
36°13′28″N 84°5′31.5″W﻿ / ﻿36.22444°N 84.092083°W﻿ / 36.22444; -84.092083﻿ (Norris Dam) | Tennessee | United States | dams
133  | 1986  | San Francisco–Oakland Bay Bridge |  | 1937  | San Francisco to Oakland
37°47′53.6″N 122°22′40.7″W﻿ / ﻿37.798222°N 122.377972°W﻿ / 37.798222; -122.377972﻿ (San Francisco–Oakland Bay Bridge) | California | United States | bridges
134  | 1986  | Sewall's Bridge |  | 1761 (rebuilt 1934)  | York
43°8′10.2″N 70°39′38.3″W﻿ / ﻿43.136167°N 70.660639°W﻿ / 43.136167; -70.660639﻿ (Sewall's Bridge) | Maine | United States | bridges
135  | 1986  | Triborough Bridge Project |  | 1936  | New York City
40°47′26.6″N 73°55′33.2″W﻿ / ﻿40.790722°N 73.925889°W﻿ / 40.790722; -73.925889﻿ (Triborough Bridge Project) | New York | United States | bridges
136  | 1986  | U.S. Army Corps of Engineers Waterways Exp. Station |  | 1929  | Vicksburg
32°18′4.2″N 90°52′18″W﻿ / ﻿32.301167°N 90.87167°W﻿ / 32.301167; -90.87167﻿ (U.S. Army Corps of Engineers Waterways Exp. Station) | Mississippi | United States | research & educational
137  | 1986  | U.S. Capitol |  | 1793, rebuilt 1863  | Washington
38°53′23″N 77°0′33″W﻿ / ﻿38.88972°N 77.00917°W﻿ / 38.88972; -77.00917﻿ (U.S. Capitol) | District of Columbia | United States | buildings
138  | 1987  | Allegheny Portage Railroad |  | 1834  | Hollidaysburg
40°27′23″N 78°33′3.4″W﻿ / ﻿40.45639°N 78.550944°W﻿ / 40.45639; -78.550944﻿ (Allegheny Portage Railroad) | Pennsylvania | United States | roads & rails
139  | 1987  | Bonneville Dam, Columbia River System |  | 1937  | Bonneville
45°38′39.7″N 121°56′26.7″W﻿ / ﻿45.644361°N 121.940750°W﻿ / 45.644361; -121.940750﻿ (Bonneville Dam, Columbia River System) | Oregon | United States | power generation
140  | 1987  | Bridges of Keeseville |  | 1843, 1878, 1888  | Keeseville
44°30′13.2″N 73°28′57.3″W﻿ / ﻿44.503667°N 73.482583°W﻿ / 44.503667; -73.482583﻿ (Bridges of Keeseville) | New York | United States | bridges
141  | 1987  | Dismal Swamp Canal |  | 1805  | Chesapeake to South Mills
36°35′34.1″N 76°23′5.4″W﻿ / ﻿36.592806°N 76.384833°W﻿ / 36.592806; -76.384833﻿ (Dismal Swamp Canal) | Virginia to North Carolina | United States | water transportation
142  | 1987  | Houston Ship Channel |  | 1837–present  | Houston
29°44′35.8″N 95°6′16.5″W﻿ / ﻿29.743278°N 95.104583°W﻿ / 29.743278; -95.104583﻿ (Houston Ship Channel) | Texas | United States | water transportation
143  | 1987  | Kamehameha V Post Office |  | 1871  | Honolulu
21°18′34.6″N 157°51′47.4″W﻿ / ﻿21.309611°N 157.863167°W﻿ / 21.309611; -157.863167﻿ (Kamehameha V Post Office) | Hawaii | United States | buildings
144  | 1987  | Frisco Bridge |  | 1892  | Memphis
35°7′43.6″N 90°4′34.7″W﻿ / ﻿35.128778°N 90.076306°W﻿ / 35.128778; -90.076306﻿ (Frisco Bridge) | Tennessee & Arkansas | United States | bridges
145  | 1987  | Quebec Bridge |  | 1917  | Quebec City
46°44′45.6″N 71°17′17.3″W﻿ / ﻿46.746000°N 71.288139°W﻿ / 46.746000; -71.288139﻿ (Quebec Bridge) | Quebec | Canada | bridges
146  | 1988  | Belle Fourche Dam |  | 1911  | Belle Fourche
44°43′51.3″N 103°40′36.8″W﻿ / ﻿44.730917°N 103.676889°W﻿ / 44.730917; -103.676889﻿ (Belle Fourche Dam) | South Dakota | United States | dams
147  | 1988  | École Nationale des Ponts et Chaussées |  | 1747  | Paris
48°51′20.9″N 2°19′49.9″E﻿ / ﻿48.855806°N 2.330528°E﻿ / 48.855806; 2.330528﻿ (École Nationale des Ponts et Chaussées) | Île-de-France | France | research & educational
148  | 1988  | Keokuk Hydro-Power System |  | 1913  | Keokuk
40°23′56.6″N 91°21′49″W﻿ / ﻿40.399056°N 91.36361°W﻿ / 40.399056; -91.36361﻿ (Keokuk Hydro-Power System) | Iowa | United States | power generation
149  | 1988  | Portion of the Pennsylvania Turnpike between the Irwin Interchange and Carlsie Interchange  |  | 1940/11964/1968  | 40°1′49.9″N 78°29′33.6″W﻿ / ﻿40.030528°N 78.492667°W﻿ / 40.030528; -78.492667﻿ (Pennsylvania Turnpike) | Pennsylvania | United States | roads & rails
150  | 1988  | River des Peres Sewerage & Drainage Works |  | 1924 to 1931  | St. Louis
38°39′42.3″N 90°18′33.9″W﻿ / ﻿38.661750°N 90.309417°W﻿ / 38.661750; -90.309417﻿ (River des Peres Sewerage & Drainage Works) | Missouri | United States | water supply & control
151  | 1988  | Sydney Harbour Bridge |  | 1932  | Sydney
33°51′8.1″S 151°12′38.6″E﻿ / ﻿33.852250°S 151.210722°E﻿ / -33.852250; 151.210722﻿ (Sydney Harbour Bridge) | New South Wales | Australia | bridges
152  | 1989  | Royal Colonial Boundary of 1665 |  | 1728–1819  | Middlesboro
36°36′2.9″N 83°40′31.5″W﻿ / ﻿36.600806°N 83.675417°W﻿ / 36.600806; -83.675417﻿ (Royal Colonial Boundary of 1665) | Kentucky | United States | surveys & maps
153  | 1989  | Zhaozhou Bridge |  | 605 AD  | Zhaoxian
37°43′12.9″N 114°45′47.7″E﻿ / ﻿37.720250°N 114.763250°E﻿ / 37.720250; 114.763250﻿ (Zhaozhou Bridge) | Hebei | China | bridges
154  | 1990  | Fort Peck Dam |  | 1940  | Fort Peck
48°0′10.1″N 106°24′58″W﻿ / ﻿48.002806°N 106.41611°W﻿ / 48.002806; -106.41611﻿ (Fort Peck Dam) | Montana | United States | dams
155  | 1990  | Maria Pia Bridge |  | 1877  | Oporto
41°8′23.4″N 8°35′49.6″W﻿ / ﻿41.139833°N 8.597111°W﻿ / 41.139833; -8.597111﻿ (Maria Pia Bridge) | Norte | Portugal | bridges
156  | 1990  | Salginatobel Bridge |  | 1930  | Grisons
46°58′54.4″N 9°43′5.1″E﻿ / ﻿46.981778°N 9.718083°E﻿ / 46.981778; 9.718083﻿ (Salginatobel Bridge) | Graubünden | Switzerland | bridges
157  | 1991  | Eddystone Lighthouse |  | 1882  | off Plymouth
50°11′2″N 4°16′5.1″W﻿ / ﻿50.18389°N 4.268083°W﻿ / 50.18389; -4.268083﻿ (Eddystone Lighthouse) |  | England | water transportation
158  | 1991  | Fritz Engineering Laboratory |  | 1910  | Bethlehem
40°36′28.9″N 75°22′34.3″W﻿ / ﻿40.608028°N 75.376194°W﻿ / 40.608028; -75.376194﻿ (Fritz Engineering Laboratory) | Pennsylvania | United States | research & educational
159  | 1991  | St. Clair Tunnel |  | 1891  | Port Huron
42°57′32.4″N 82°25′22.2″W﻿ / ﻿42.959000°N 82.422833°W﻿ / 42.959000; -82.422833﻿ (St. Clair Tunnel) | Michigan | United States | tunnels
160  | 1991  | Thames Tunnel |  | 1843  | London
51°30′12.7″N 0°3′13.3″W﻿ / ﻿51.503528°N 0.053694°W﻿ / 51.503528; -0.053694﻿ (Thames Tunnel) |  | England | tunnels
161  | 1992  | Acquedotto Traiano-Paolo |  | 110 AD  | Rome
42°3′12.9″N 12°20′18.7″E﻿ / ﻿42.053583°N 12.338528°E﻿ / 42.053583; 12.338528﻿ (Acquedotto Traiano-Paolo) | Lazio | Italy | water supply & control
162  | 1992  | Bridges of Niagara  |  | 1849, 1855, 1883, 1898, 1941  | Niagara Gorge
43°5′24.8″N 79°4′3.4″W﻿ / ﻿43.090222°N 79.067611°W﻿ / 43.090222; -79.067611﻿ (Niagara Falls Suspension Bridge) | Ontario and New York | Canada and United States | bridges
163  | 1992  | Duck Creek Aqueduct |  | 1846  | Metamora
39°26′46.1″N 85°7′48″W﻿ / ﻿39.446139°N 85.13000°W﻿ / 39.446139; -85.13000﻿ (Duck Creek Aqueduct) | Indiana | United States | water supply & control
164  | 1992  | Hohokam Canal System |  | 600 – 1450 AD  | Maricopa County
33°26′43.8″N 111°48′56.2″W﻿ / ﻿33.445500°N 111.815611°W﻿ / 33.445500; -111.815611﻿ (Hohokam Canal System) | Arizona | United States | water supply & control
165  | 1992  | San Jacinto Monument |  | 1939  | Houston
29°44′59.5″N 95°4′50.6″W﻿ / ﻿29.749861°N 95.080722°W﻿ / 29.749861; -95.080722﻿ (San Jacinto Monument) | Texas | United States | buildings
166  | 1993  | Blimp Hangars |  | 1942  | Tustin
33°42′10.8″N 117°49′26.3″W﻿ / ﻿33.703000°N 117.823972°W﻿ / 33.703000; -117.823972﻿ (Blimp Hangars) | California | United States | aviation
167  | 1993  | Denison Dam |  | 1943  | Denison
33°49′52.6″N 96°34′16″W﻿ / ﻿33.831278°N 96.57111°W﻿ / 33.831278; -96.57111﻿ (Denison Dam) | Texas & Oklahoma | United States | dams
168  | 1993  | Hanford B Reactor |  | 1944  | Richland
46°37′49.1″N 119°38′50.3″W﻿ / ﻿46.630306°N 119.647306°W﻿ / 46.630306; -119.647306﻿ (Hanford B Reactor) | Washington | United States | power generation
169  | 1993  | Stevens Pass Railroad Tunnels & Switchback System  |  | 1900  | Stevens Pass
47°44′52.4″N 121°7′26.3″W﻿ / ﻿47.747889°N 121.123972°W﻿ / 47.747889; -121.123972﻿ (Stevens Pass Railroad Tunnels & Switchback System) | Washington | United States | tunnels
170  | 1994  | Colorado River Aqueduct |  | 1933–1941  | Blythe
34°17′23.6″N 114°10′19.5″W﻿ / ﻿34.289889°N 114.172083°W﻿ / 34.289889; -114.172083﻿ (Colorado River Aqueduct) | California | United States | water supply & control
171  | 1994  | Kavanagh Building |  | 1936  | Buenos Aires
34°35′43.7″S 58°22′28.9″W﻿ / ﻿34.595472°S 58.374694°W﻿ / -34.595472; -58.374694﻿ (Kavanagh Building) |  | Argentina | buildings
172  | 1994  | Missouri River Bridges |  | 1926  | Chamberlain
43°48′42.1″N 99°20′16.1″W﻿ / ﻿43.811694°N 99.337806°W﻿ / 43.811694; -99.337806﻿ (Missouri River Bridges) | South Dakota | United States | bridges
173  | 1995  | Red Hill Underground Fuel Storage Facility |  | 1943  | Honolulu
21°22′18″N 157°53′44″W﻿ / ﻿21.37167°N 157.89556°W﻿ / 21.37167; -157.89556﻿ (Red Hill Underground Fuel Storage Facility) | Hawaii | United States | tunnels
174  | 1994  | Viaducto del Malleco |  | 1890  | Malleco River
37°57′47″S 72°26′20″W﻿ / ﻿37.96306°S 72.43889°W﻿ / -37.96306; -72.43889﻿ (Viaducto del Malleco) | Central Chile | Chile | bridges
175  | 1994  | White Pass and Yukon Route |  | 1900  | Whitehorse, Yukon to Skagway, Alaska
59°37′28″N 135°8′18.3″W﻿ / ﻿59.62444°N 135.138417°W﻿ / 59.62444; -135.138417﻿ (White Pass and Yukon Route) | Yukon Territory to Alaska | Canada & United States | roads & rails
176  | 1995  | Alaska Highway |  | 1942  | Dawson Creek to Delta Junction
59°54′39.6″N 131°33′20.6″W﻿ / ﻿59.911000°N 131.555722°W﻿ / 59.911000; -131.555722﻿ (Alaska Highway) | British Columbia to Alaska | Canada & United States | roads & rails
177  | 1995  | Banaue Rice Terraces |  | 100 BC  | Banaue
16°55′57.4″N 121°3′30.1″E﻿ / ﻿16.932611°N 121.058361°E﻿ / 16.932611; 121.058361﻿ (Banaue Rice Terraces) | Ifugao | Philippines | water supply & control
178  | 1995  | Acueducto de Queretaro |  | 1738  | Querétaro
20°35′48″N 100°22′20.6″W﻿ / ﻿20.59667°N 100.372389°W﻿ / 20.59667; -100.372389﻿ (Acueducto de Queretaro) |  | Mexico | water supply & control
179  | 1995  | Victoria Falls Bridge |  | 1905  | Zambezi River
17°55′41.7″S 25°51′26.1″E﻿ / ﻿17.928250°S 25.857250°E﻿ / -17.928250; 25.857250﻿ (Victoria Falls Bridge) |  | Zimbabwe & Zambia | bridges
180  | 1996  | Armour-Swift-Burlington Bridge |  | 1912  | Kansas City
39°7′0″N 94°34′47.5″W﻿ / ﻿39.11667°N 94.579861°W﻿ / 39.11667; -94.579861﻿ (Armour-Swift-Burlington Bridge) | Missouri | United States | bridges
181  | 1996  | Dublin-Belfast railway line |  | 1839  | Dublin to Belfast
53°43′0″N 6°20′15″W﻿ / ﻿53.71667°N 6.33750°W﻿ / 53.71667; -6.33750﻿ (Dublin-Belfast railway line) |  | Ireland & Northern Ireland | roads & rails
182  | 1996  | Kentucky Dam |  | 1944  | Gilbertsville
37°0′46.4″N 88°16′10.1″W﻿ / ﻿37.012889°N 88.269472°W﻿ / 37.012889; -88.269472﻿ (Kentucky Dam) | Kentucky | United States | dams
183  | 1996  | Lake Moeris Quarry Road |  | 2575–2137 BC  | Lake Moeris
29°37′24.2″N 30°38′40.4″E﻿ / ﻿29.623389°N 30.644556°E﻿ / 29.623389; 30.644556﻿ (Lake Moeris Quarry Road) |  | Egypt | roads & rails
184  | 1996  | City Plan of Philadelphia |  | 1682  | Philadelphia
39°57′28.6″N 75°10′14.2″W﻿ / ﻿39.957944°N 75.170611°W﻿ / 39.957944; -75.170611﻿ (City Plan of Philadelphia) | Pennsylvania | United States | surveys & maps
185  | 1996  | San Antonio River Walk & Flood Control System |  | 1929 to 1941  | San Antonio
29°25′30.7″N 98°29′29.7″W﻿ / ﻿29.425194°N 98.491583°W﻿ / 29.425194; -98.491583﻿ (San Antonio River Walk & Flood Control System) | Texas | United States | water control & supply
186  | 1997  | Grand Coulee Dam |  | 1941  | Grand Coulee
47°57′23.8″N 118°58′51.6″W﻿ / ﻿47.956611°N 118.981000°W﻿ / 47.956611; -118.981000﻿ (Grand Coulee Dam) | Washington | United States | dams
187  | 1997  | Lake Washington Ship Canal & Hiram M. Chittenden Locks |  | 1917  | Seattle
47°39′55.7″N 122°23′49.6″W﻿ / ﻿47.665472°N 122.397111°W﻿ / 47.665472; -122.397111﻿ (Lake Washington Ship Canal & Hiram M. Chittenden Locks) | Washington | United States | water transportation
188  | 1997  | Navajo Bridge |  | 1929  | Page
36°49′3.4″N 111°37′52.3″W﻿ / ﻿36.817611°N 111.631194°W﻿ / 36.817611; -111.631194﻿ (Navajo Bridge) | Arizona | United States | bridges
189  | 1997  | North Island Main Trunk Railway |  | 1885–1908  | Auckland to Wellington
39°13′39.8″S 175°23′55.5″E﻿ / ﻿39.227722°S 175.398750°E﻿ / -39.227722; 175.398750﻿ (North Island Main Trunk Railway) | North Island | New Zealand | roads & rails
190  | 1997  | Northampton Street Bridge |  | 1896  | Easton to Phillipsburg
40°41′29.3″N 75°12′14.4″W﻿ / ﻿40.691472°N 75.204000°W﻿ / 40.691472; -75.204000﻿ (Northampton Street Bridge) | Pennsylvania & New Jersey | United States | bridges
191  | 1997  | Snowy Mountains Scheme |  | 1974  | Snowy Mountains
35°36′40.1″S 148°17′29.8″E﻿ / ﻿35.611139°S 148.291611°E﻿ / -35.611139; 148.291611﻿ (Snowy Mountains Scheme) | New South Wales | Australia | power generation
192  | 1997  | Texas Commerce Bank Building (formerly Gulf, now Chase) |  | 1929  | Houston
29°45′32″N 95°21′49.7″W﻿ / ﻿29.75889°N 95.363806°W﻿ / 29.75889; -95.363806﻿ (Texas Commerce Bank Building (formerly Gulf, now Chase)) | Texas | United States | buildings
193  | 1997  | Walnut Street Bridge |  | 1890  | Harrisburg
40°15′27.1″N 76°53′9.8″W﻿ / ﻿40.257528°N 76.886056°W﻿ / 40.257528; -76.886056﻿ (Walnut Street Bridge) | Pennsylvania | United States | bridges
194  | 1998  | Brooks AFB, Old Hangar 9 |  | 1918  | San Antonio
29°20′38.5″N 98°26′38.9″W﻿ / ﻿29.344028°N 98.444139°W﻿ / 29.344028; -98.444139﻿ (Brooks AFB, Old Hangar 9) | Texas | United States | aviation
195  | 1998  | Canton Viaduct |  | 1835  | Canton
42°9′28.8″N 71°9′14.5″W﻿ / ﻿42.158000°N 71.154028°W﻿ / 42.158000; -71.154028﻿ (Canton Viaduct) | Massachusetts | United States | bridges
196  | 1998  | Göta Canal |  | 1810 to 1832  | Gothenburg
58°29′53.9″N 16°10′28.9″E﻿ / ﻿58.498306°N 16.174694°E﻿ / 58.498306; 16.174694﻿ (Göta Canal) | Västra Götaland | Sweden | water transportation
197  | 1998  | Moseley Wrought Iron Arch Bridge |  | 1864  | North Andover
42°40′8.6″N 71°7′21.3″W﻿ / ﻿42.669056°N 71.122583°W﻿ / 42.669056; -71.122583﻿ (Moseley Wrought Iron Arch Bridge) | Massachusetts | United States | bridges
198  | 1998  | Tehachapi Pass Railroad Line |  | 1876  | Kern County
35°12′3″N 118°32′13″W﻿ / ﻿35.20083°N 118.53694°W﻿ / 35.20083; -118.53694﻿ (Tehachapi Pass Railroad Line) | California | United States | roads & rails
199  | 1999  | Acueducto de Segovia |  | 50 AD  | Segovia
40°56′52.7″N 4°7′4.3″W﻿ / ﻿40.947972°N 4.117861°W﻿ / 40.947972; -4.117861﻿ (Acueducto de Segovia) | Castile and León | Spain | water supply & control
200  | 1999  | Arroyo Seco Parkway |  | 1940  | Los Angeles
34°4′23″N 118°14′2″W﻿ / ﻿34.07306°N 118.23389°W﻿ / 34.07306; -118.23389﻿ (Arroyo Seco Parkway) | California | United States | roads & rails
201  | 1999  | Blue Ridge Parkway |  | begun 1935  | Shenandoah NP to Great Smokey Mountains NP
36°26′28.5″N 81°5′42.9″W﻿ / ﻿36.441250°N 81.095250°W﻿ / 36.441250; -81.095250﻿ (Blue Ridge Parkway) | Virginia to North Carolina | United States | roads & rails
202  | 1999  | Cape Hatteras Lighthouse |  | 1870  | Cape Hatteras
35°15′2″N 75°31′43.7″W﻿ / ﻿35.25056°N 75.528806°W﻿ / 35.25056; -75.528806﻿ (Cape Hatteras Lighthouse) | North Carolina | United States | water transportation
203  | 1999  | Maine Turnpike |  | 1947  | 43°21′17.2″N 70°35′26.2″W﻿ / ﻿43.354778°N 70.590611°W﻿ / 43.354778; -70.590611﻿ (Maine Turnpike) | Maine | United States | roads & rails
204  | 1999  | McNeill Street Pumping Station |  | 1887  | Shreveport
32°31′3.8″N 93°45′25.9″W﻿ / ﻿32.517722°N 93.757194°W﻿ / 32.517722; -93.757194﻿ (McNeill Street Pumping Station) | Louisiana | United States | water supply & control
205  | 2000  | Cedar Falls Hydroelectric Project |  | 1901  | Seattle
47°25′9.2″N 121°46′54.4″W﻿ / ﻿47.419222°N 121.781778°W﻿ / 47.419222; -121.781778﻿ (Cedar Falls Hydroelectric Project) | Washington | United States | power generation
206  | 2000  | Forth and Clyde Canal and Union Canal |  | 1790  | 55°56′18″N 4°9′18.8″W﻿ / ﻿55.93833°N 4.155222°W﻿ / 55.93833; -4.155222﻿ (Forth and Clyde Canal and Union Canal) |  | Scotland | water transportation
207  | 2000  | Hagia Sophia |  | 537 AD  | Istanbul
41°0′31.2″N 28°58′48.6″E﻿ / ﻿41.008667°N 28.980167°E﻿ / 41.008667; 28.980167﻿ (Hagia Sophia) | Istanbul | Turkey | buildings
208  | 2000  | Muskingum River Navigation System |  | 1837  | Zanesville
39°43′59.5″N 81°54′29.4″W﻿ / ﻿39.733194°N 81.908167°W﻿ / 39.733194; -81.908167﻿ (Muskingum River Navigation System) | Ohio | United States | water transportation
209  | 2000  | Seventh Street Improvement Arches |  | 1909  | St. Paul
44°57′23″N 93°4′38″W﻿ / ﻿44.95639°N 93.07722°W﻿ / 44.95639; -93.07722﻿ (Seventh Street Improvement Arches) | Minnesota | United States | bridges
210  | 2000  | West Baden Springs Hotel |  | 1902  | West Baden Springs
38°34′1.3″N 86°37′6.6″W﻿ / ﻿38.567028°N 86.618500°W﻿ / 38.567028; -86.618500﻿ (West Baden Springs Hotel) | Indiana | United States | buildings
211  | 2001  | Bunker Hill Covered Bridge |  | 1895, rebuilt 1994  | Claremont
35°43′17.5″N 81°6′54.8″W﻿ / ﻿35.721528°N 81.115222°W﻿ / 35.721528; -81.115222﻿ (Bunker Hill Covered Bridge) | North Carolina | United States | bridges
212  | 2001  | Galveston Seawall and Grade Raising |  | 1904 (expanded through 1963)  | Galveston
29°18′9″N 94°46′27″W﻿ / ﻿29.30250°N 94.77417°W﻿ / 29.30250; -94.77417﻿ (Galveston Seawall and Grade Raising) | Texas | United States | water supply & control
213  | 2001  | Baltimore & Ohio Roundhouse & Shop Complex |  | 1842 to 1850s  | Martinsburg
39°27′33″N 77°57′36″W﻿ / ﻿39.45917°N 77.96000°W﻿ / 39.45917; -77.96000﻿ (Baltimore & Ohio Roundhouse & Shop Complex) | West Virginia | United States | buildings
214  | 2002  | Conwy Suspension Bridge |  | 1826  | Conwy
53°16′49.7″N 3°49′25.6″W﻿ / ﻿53.280472°N 3.823778°W﻿ / 53.280472; -3.823778﻿ (Conwy Suspension Bridge) | Conwy | Wales | bridges
215  | 2002  | Conwy Tubular Bridge |  | 1849  | Conwy
53°16′49″N 3°49′25″W﻿ / ﻿53.28028°N 3.82361°W﻿ / 53.28028; -3.82361﻿ (Conwy Tubular Bridge) | Conwy | Wales | bridges
216  | 2002  | Dorton Arena |  | 1952  | Raleigh
35°47′38.4″N 78°42′37.3″W﻿ / ﻿35.794000°N 78.710361°W﻿ / 35.794000; -78.710361﻿ (Dorton Arena) | North Carolina | United States | buildings
217  | 2002  | East Maui Irrigation System |  | 1876 to 1923  | East Maui
20°52′0″N 156°13′0″W﻿ / ﻿20.86667°N 156.21667°W﻿ / 20.86667; -156.21667﻿ (East Maui Irrigation System) | Hawaii | United States | water supply & control
218  | 2002  | Five Stone Arch Bridges |  | 1830 to 1866  | Hillsborough
43°7′49″N 71°56′41.1″W﻿ / ﻿43.13028°N 71.944750°W﻿ / 43.13028; -71.944750﻿ (Five Stone Arch Bridges) | New Hampshire | United States | bridges
219  | 2002  | Louisville and Portland Canal Locks & Dam |  | 1830, rebuilt 1962  | Louisville
38°16′18.5″N 85°46′45.6″W﻿ / ﻿38.271806°N 85.779333°W﻿ / 38.271806; -85.779333﻿ (Louisville and Portland Canal Locks & Dam) | Kentucky | United States | water transportation
220  | 2002  | Marshall Building |  | 1906  | Milwaukee
43°2′0.9″N 87°54′31.2″W﻿ / ﻿43.033583°N 87.908667°W﻿ / 43.033583; -87.908667﻿ (Marshall Building) | Wisconsin | United States | buildings
221  | 2002  | Menai Suspension Bridge |  | 1826  | Anglesey
53°13′13.1″N 4°9′48.1″W﻿ / ﻿53.220306°N 4.163361°W﻿ / 53.220306; -4.163361﻿ (Menai Suspension Bridge) |  | Wales | bridges
222  | 2002  | Old Cape Henry Light,  |  | 1792, replaced 1881  | Virginia Beach
36°55′32.8″N 76°0′29.3″W﻿ / ﻿36.925778°N 76.008139°W﻿ / 36.925778; -76.008139﻿ (Old Cape Henry Light) | Virginia | United States | water transportation
223  | 2002  | Portland Head Light |  | 1787  | Cape Elizabeth
43°37′23.2″N 70°12′28.4″W﻿ / ﻿43.623111°N 70.207889°W﻿ / 43.623111; -70.207889﻿ (Portland Head Light) | Maine | United States | water transportation
224  | 2002  | Shannon Hydroelectric Scheme |  | 1929  | 52°42′20″N 8°36′46″W﻿ / ﻿52.70556°N 8.61278°W﻿ / 52.70556; -8.61278﻿ (Shannon Hydroelectric Scheme) |  | Ireland | power generation
225  | 2002  | Waldo-Hancock Suspension Bridge |  | 1931  | Bucksport
44°33′37.6″N 68°48′5.9″W﻿ / ﻿44.560444°N 68.801639°W﻿ / 44.560444; -68.801639﻿ (Waldo-Hancock Suspension Bridge) | Maine | United States | bridges
226  | 2003  | Horseshoe Curve |  | 1854  | Altoona
40°29′54″N 78°29′9.1″W﻿ / ﻿40.49833°N 78.485861°W﻿ / 40.49833; -78.485861﻿ (Horseshoe Curve) | Pennsylvania | United States | roads & rails
227  | 2003  | Suez Canal |  | 1869  | Port Said to Suez
30°42′18″N 32°20′39″E﻿ / ﻿30.70500°N 32.34417°E﻿ / 30.70500; 32.34417﻿ (Suez Canal) |  | Egypt | water transportation
228  | 2003  | Tennessee State Capitol |  | 1845 to 1877  | Nashville
36°9′57.1″N 86°47′3.4″W﻿ / ﻿36.165861°N 86.784278°W﻿ / 36.165861; -86.784278﻿ (Tennessee State Capitol) | Tennessee | United States | buildings
229  | 2004  | Hwaseong Fortress |  | 1796  | Suwon
37°17′0″N 127°0′57.6″E﻿ / ﻿37.28333°N 127.016000°E﻿ / 37.28333; 127.016000﻿ (Hwaseong Fortress) | Gyeonggi-do | Republic of Korea | buildings
230  | 2004  | Mesa Verde Reservoirs |  | 750 to 1180 AD  | Montezuma County
37°14′26.3″N 108°30′16.7″W﻿ / ﻿37.240639°N 108.504639°W﻿ / 37.240639; -108.504639﻿ (Mesa Verde Reservoirs) | Colorado | United States | water supply & control
231  | 2004  | Northern Pacific High Line Bridge No 64 |  | 1908  | Valley City
46°56′18.9″N 97°59′26.9″W﻿ / ﻿46.938583°N 97.990806°W﻿ / 46.938583; -97.990806﻿ (Northern Pacific High Line Bridge No 64) | North Dakota | United States | bridges
232  | 2004  | Old Wisla Bridge |  |  | Tczew
54°5′33.7″N 18°48′22.2″E﻿ / ﻿54.092694°N 18.806167°E﻿ / 54.092694; 18.806167﻿ (Old Wisla Bridge) | Vistula River | Poland | bridges
233  | 2005  | Great Western Railway |  | 1838  | 51°37′16.2″N 1°21′26.8″W﻿ / ﻿51.621167°N 1.357444°W﻿ / 51.621167; -1.357444﻿ (Great Western Railway) |  | England & Wales | roads & rails
234  | 2005  | Philadelphia City Hall |  | 1901  | Philadelphia
39°57′10.1″N 75°9′48.8″W﻿ / ﻿39.952806°N 75.163556°W﻿ / 39.952806; -75.163556﻿ (Philadelphia City Hall) | Pennsylvania | United States | buildings
235  | 2005  | Sweetwater Dam |  | 1888  | Spring Valley
32°41′29.8″N 117°0′29.2″W﻿ / ﻿32.691611°N 117.008111°W﻿ / 32.691611; -117.008111﻿ (Sweetwater Dam) | California | United States | dams
236  | 2005  | Stanley Hydraulics Laboratory at the University of Iowa |  | established 1919  | Iowa City
41°39′25.8″N 91°32′29″W﻿ / ﻿41.657167°N 91.54139°W﻿ / 41.657167; -91.54139﻿ (Stanley Hydraulics Laboratory at the University of Iowa) | Iowa | United States | research & educational
237  | 2006  | Machu Picchu |  | 1460 AD  | 13°9′48″S 72°32′44″W﻿ / ﻿13.16333°S 72.54556°W﻿ / -13.16333; -72.54556﻿ (Machu Picchu) |  | Peru | urban development
238  | 2006  | Portland Observatory |  | 1807  | Portland
43°39′55.4″N 70°14′53.7″W﻿ / ﻿43.665389°N 70.248250°W﻿ / 43.665389; -70.248250﻿ (Portland Observatory) | Maine | United States | water transportation
239  | 2006  | Tipon |  | 1200 – 1534 AD  | 13°34′15″S 71°46′59″W﻿ / ﻿13.57083°S 71.78306°W﻿ / -13.57083; -71.78306﻿ (Tipon) |  | Peru | water supply & control
240  | 2007  | Caledonian Canal |  | 1822  | Great Glen
57°6′44.9″N 4°44′18.8″W﻿ / ﻿57.112472°N 4.738556°W﻿ / 57.112472; -4.738556﻿ (Caledonian Canal) |  | Scotland | water transportation
241  | 2007  | Craigellachie Bridge Moray |  | 1814  | Strathspey
57°29′28.8″N 3°11′38″W﻿ / ﻿57.491333°N 3.19389°W﻿ / 57.491333; -3.19389﻿ (Craigellachie Bridge Moray) |  | Scotland | bridges
242  | 2008  | Choate Bridge |  | 1764  | Ipswich
42°40′46.1″N 70°50′13.6″W﻿ / ﻿42.679472°N 70.837111°W﻿ / 42.679472; -70.837111﻿ (Choate Bridge) | Massachusetts | United States | bridges
243  | 2008  | Goldfields Water Supply |  | 1903  | Kalgoorlie
31°57′36″S 116°10′16.7″E﻿ / ﻿31.96000°S 116.171306°E﻿ / -31.96000; 116.171306﻿ (Goldfields Water Supply) | Western Australia | Australia | water supply & control
244  | 2008  | Lacey V. Murrow Bridge and Mount Baker Ridge Tunnels |  | 1940  | King County
47°35′23.2″N 122°16′44.3″W﻿ / ﻿47.589778°N 122.278972°W﻿ / 47.589778; -122.278972﻿ (Lacey V. Murrow Bridge and Mount Baker Ridge Tunnels) | Washington | United States | bridges
245  | 2008  | Woodhead Dam |  | 1897  | Cape Town
33°58′38.2″S 18°24′7.9″E﻿ / ﻿33.977278°S 18.402194°E﻿ / -33.977278; 18.402194﻿ (Woodhead Dam) | Western Cape | South Africa | dams
246  | 2009  | Guayabo Ceremonial Center |  | 300 BC - AD 1400  | Turrialba
9°58′21.7″N 83°41′26.6″W﻿ / ﻿9.972694°N 83.690722°W﻿ / 9.972694; -83.690722﻿ (Guayabo Ceremonial Center) | Turrialba | Costa Rica | civil engineering profession
247  | 2009  | Vancouver's Mapping of the West Coast of North America |  | 1791–1795  | 45°0′0″N 124°0′43″W﻿ / ﻿45.00000°N 124.01194°W﻿ / 45.00000; -124.01194﻿ (Vancouver's Mapping of the West Coast of North America) |  | Canada, Mexico and United States | surveys & maps
248  | 2009  | Poughkeepsie-Highland Bridge |  | 1886–1888  | Poughkeepsie
41°42′38.5″N 73°56′41.1″W﻿ / ﻿41.710694°N 73.944750°W﻿ / 41.710694; -73.944750﻿ (Poughkeepsie-Highland Bridge) | New York | United States | bridges
249  | 2009  | Manhattan Bridge |  | 1909  | New York City
40°42′27″N 73°59′26.9″W﻿ / ﻿40.70750°N 73.990806°W﻿ / 40.70750; -73.990806﻿ (Manhattan Bridge) | New York | United States | bridges
250  | 2009  | Queensboro Bridge |  | 1909  | New York City
40°45′24.2″N 73°57′15.1″W﻿ / ﻿40.756722°N 73.954194°W﻿ / 40.756722; -73.954194﻿ (Queensboro Bridge) | New York | United States | bridges
251  | 2009  | Williamsburg Bridge |  | 1903  | New York City
40°42′49.2″N 73°58′20.5″W﻿ / ﻿40.713667°N 73.972361°W﻿ / 40.713667; -73.972361﻿ (Williamsburg Bridge) | New York | United States | bridges
252  | 2010  | Mackinac Bridge |  | 1958  | Straits of Mackinac
45°48′48.8″N 84°43′42″W﻿ / ﻿45.813556°N 84.72833°W﻿ / 45.813556; -84.72833﻿ (Mackinac Bridge) | Michigan | United States | bridges
253  | 2010  | Rensselaer Polytechnic Institute |  | 1824  | Troy
42°43′48″N 73°40′39″W﻿ / ﻿42.73000°N 73.67750°W﻿ / 42.73000; -73.67750﻿ (Rensselaer Polytechnic Institute) | New York | United States | research & educational
254  | 2010  | Thomas Viaduct Railroad Bridge[5] |  | 1835  | Elkridge and Relay
39°13′17.5″N 76°42′48.1″W﻿ / ﻿39.221528°N 76.713361°W﻿ / 39.221528; -76.713361﻿ (Thomas Viaduct Railroad Bridge) | Maryland | United States | bridges
255  | 2011  | Utica Memorial Auditorium |  | 1959  | Utica
43°6′17.9″N 75°14′0.5″W﻿ / ﻿43.104972°N 75.233472°W﻿ / 43.104972; -75.233472﻿ (Utica Memorial Auditorium) | New York | United States | buildings
256  | 2011  | Tacoma Narrows Bridges[6] |  | 1940–1950  | Tacoma
47°16′8″N 122°33′3″W﻿ / ﻿47.26889°N 122.55083°W﻿ / 47.26889; -122.55083﻿ (Tacoma Narrows Bridges) | Washington | United States | bridges
257  | 2011  | Flight of Five Locks |  | 1915  | Waterford
42°48′2.8″N 73°41′29.1″W﻿ / ﻿42.800778°N 73.691417°W﻿ / 42.800778; -73.691417﻿ (Flight of Five Locks) | New York | United States | water transportation
258  | 2011  | Petra |  | 309 BC  | 30°19′43″N 35°26′31″E﻿ / ﻿30.32861°N 35.44194°E﻿ / 30.32861; 35.44194﻿ (Petra) | Ma'an Governorate | Jordan | buildings
259  | 2012  | Zion-Mount Carmel Tunnel and Highway |  | 1930  | Zion National Park
37°12′40.7″N 112°57′29.6″W﻿ / ﻿37.211306°N 112.958222°W﻿ / 37.211306; -112.958222﻿ (Zion-Mount Carmel Tunnel and Highway) | Utah | United States | roads & rails
260  | 2012  | Huey P. Long Bridge |  | 1935  | Jefferson Parish
29°56′38.8″N 90°10′7.6″W﻿ / ﻿29.944111°N 90.168778°W﻿ / 29.944111; -90.168778﻿ (Huey P. Long Bridge) | Louisiana | United States | bridges
261  | 2012  | Grand Central Terminal |  | 1913  | New York City
40°45′10.3″N 73°58′37.9″W﻿ / ﻿40.752861°N 73.977194°W﻿ / 40.752861; -73.977194﻿ (Grand Central Terminal) | New York | United States | roads & rails
262  | 2013  | Titan Clydebank crane |  | 1907  | Clydebank
55°53′50.5″N 4°24′31.2″W﻿ / ﻿55.897361°N 4.408667°W﻿ / 55.897361; -4.408667﻿ (Titan Clydebank crane) | West Dunbartonshire | Scotland | buildings
263  | 2013  | Waterford Bridges |  | 1909  | Troy and Waterford
42°47′19.3″N 73°40′25.8″W﻿ / ﻿42.788694°N 73.673833°W﻿ / 42.788694; -73.673833﻿ (Waterford Bridges) | New York | United States | bridges
264  | 2013  | Lake Pontchartrain Causeway |  | 1956  | Lake Pontchartrain
30°11′59.2″N 90°7′21.7″W﻿ / ﻿30.199778°N 90.122694°W﻿ / 30.199778; -90.122694﻿ (Lake Pontchartrain Causeway) | Louisiana | United States | bridges
265  | 2014  | The Dalles Dam |  | 1957  | Columbia River
45°36′50.3″N 121°8′3″W﻿ / ﻿45.613972°N 121.13417°W﻿ / 45.613972; -121.13417﻿ (The Dalles Dam) | Oregon & Washington | United States | dams
266  | 2015  | Gladesville Bridge |  | 1964  | Sydney
33°50′31.3″S 151°8′51.8″E﻿ / ﻿33.842028°S 151.147722°E﻿ / -33.842028; 151.147722﻿ (Gladesville Bridge) | New South Wales | Australia | bridges
267  | 2016  | Cape Agulhas Lighthouse |  | 1848  | L'Agulhas
34°49′45.7″S 20°0′32.4″E﻿ / ﻿34.829361°S 20.009000°E﻿ / -34.829361; 20.009000﻿ (Cape Agulhas Lighthouse) |  | South Africa | water transportation
268  | 2016  | Arrowrock Dam |  | 1912  | Boise and Elmore
43°35′43″N 115°55′21.1″W﻿ / ﻿43.59528°N 115.922528°W﻿ / 43.59528; -115.922528﻿ (Arrowrock Dam) | Idaho | United States | dams
269  | 2016  | All-American Canal[7] |  | 1940  | Imperial County
32°52′59″N 114°27′54″W﻿ / ﻿32.88306°N 114.46500°W﻿ / 32.88306; -114.46500﻿ (All-American Canal) | California | United States | water supply & control
270  | 2016  | Canal du Midi[8] |  | 1681  | Toulouse to Étang de Thau
43°12′52.9″N 2°25′49.8″E﻿ / ﻿43.214694°N 2.430500°E﻿ / 43.214694; 2.430500﻿ (Canal du Midi) | Occitania | France | water transportation
271  | 2016  | Liverpool and Manchester Railway[9] |  | 1830  | Liverpool to Manchester
53°27′10.8″N 2°36′58.6″W﻿ / ﻿53.453000°N 2.616278°W﻿ / 53.453000; -2.616278﻿ (Liverpool & Manchester Railway) | North West England | England | roads & rails
272  | 2017  | Bonnet Carré Spillway |  | 1931  | St. Charles Parish
30°0′7.2″N 90°26′23.3″W﻿ / ﻿30.002000°N 90.439806°W﻿ / 30.002000; -90.439806﻿ (Bonnet Carré Spillway) | Louisiana | United States | dams
273  | 2017  | Duluth Aerial Ferry/Lift Bridge[10] |  | 1905  | Duluth
46°46′45.8″N 92°5′35.3″W﻿ / ﻿46.779389°N 92.093139°W﻿ / 46.779389; -92.093139﻿ (Duluth Aerial Ferry/Lift Bridge) | Minnesota | United States | bridges
274  | 2017  | Mississippi River Basin Model[11] |  | 1966  | Jackson
32°18′21.8″N 90°19′8.2″W﻿ / ﻿32.306056°N 90.318944°W﻿ / 32.306056; -90.318944﻿ (Mississippi River Basin Model) | Mississippi | United States | research & educational
275  | 2017  | Chaffey Brothers Irrigation Works[12] |  | 1887  | Mildura and Renmark
34°15′1.6″S 142°13′28.8″E﻿ / ﻿34.250444°S 142.224667°E﻿ / -34.250444; 142.224667﻿ (Chaffey Brothers Irrigation Works) | Victoria and South Australia | Australia | water supply & control
276  | 2017  | Qhapaq Ñan: The Great Inka Road System[13] |  | 1000 BC - 1533 AD  | 13°13′0.3″S 72°23′5.2″W﻿ / ﻿13.216750°S 72.384778°W﻿ / -13.216750; -72.384778﻿ (Qhapaq Ñan: The Great Inka Road System) |  | Colombia to Chile | roads & rails
277  | 2017  | Tunnel of Eupalinos[14] |  | 520 BC  | Samos
37°41′40.6″N 26°55′48″E﻿ / ﻿37.694611°N 26.93000°E﻿ / 37.694611; 26.93000﻿ (Tunnel of Eupalinos) | North Aegean | Greece | tunnels
278  | 2018  | Augusta Canal and Industrial District |  | 1845  | Augusta
33°31′17.6″N 82°0′38.9″W﻿ / ﻿33.521556°N 82.010806°W﻿ / 33.521556; -82.010806﻿ (Augusta Canal and Industrial District) | Georgia | United States | power generation
279  | 2018  | Old River Station[15] |  | 1907  | Cincinnati
39°4′17″N 84°25′40″W﻿ / ﻿39.07139°N 84.42778°W﻿ / 39.07139; -84.42778﻿ (Old River Station) | Ohio | United States | water supply & control
280  | 2018  | Boundary Layer Wind Tunnel Laboratory[16] |  | 1965  | London
43°0′14″N 81°16′32.5″W﻿ / ﻿43.00389°N 81.275694°W﻿ / 43.00389; -81.275694﻿ (Boundary Layer Wind Tunnel Laboratory) | Ontario | Canada | research & educational
281  | 2018  | Institution of Civil Engineers[17] |  | 1818  | London
51°30′4″N 0°7′44.4″W﻿ / ﻿51.50111°N 0.129000°W﻿ / 51.50111; -0.129000﻿ (Institution of Civil Engineers) |  | England | research & educational
282  | 2018  | Union Chain Bridge[18] |  | 1820  | Horncliffe to Fishwick
55°45′9.3″N 2°6′24.4″W﻿ / ﻿55.752583°N 2.106778°W﻿ / 55.752583; -2.106778﻿ (Union Chain Bridge) |  | England to Scotland | bridges
283  | 2019  | Kaibab Trail Suspension Bridge[19] |  | 1928  | Grand Canyon
36°6′53.2″N 112°5′21.1″W﻿ / ﻿36.114778°N 112.089194°W﻿ / 36.114778; -112.089194﻿ (Kaibab Trail Suspension Bridge) | Arizona | United States | bridges
284  | 2019  | Union Pacific Railroad[20] |  | 1868  | Omaha westward
41°15′0.9″N 95°55′37.4″W﻿ / ﻿41.250250°N 95.927056°W﻿ / 41.250250; -95.927056﻿ (Union Pacific Railroad) | Nebraska | United States | roads & rails
285  | 2019  | Silver Bridge Collapse - Creation of National Inspection Standards[21] |  | 1967  | Point Pleasant
38°50′42″N 82°8′28″W﻿ / ﻿38.84500°N 82.14111°W﻿ / 38.84500; -82.14111﻿ (Silver Bridge Collapse - Creation of National Inspection Standards) | West Virginia | United States | bridges
286  | 2020  | NASA Vehicle Assembly Building[22] |  | 1966  | Titusville
28°35′11″N 80°39′5″W﻿ / ﻿28.58639°N 80.65139°W﻿ / 28.58639; -80.65139﻿ (NASA Vehicle Assembly Building) | Florida | United States | buildings
287  | 2021  | Main Avenue Bridge[23] |  | 1939  | Cleveland
41°29′55.2″N 81°42′18.5″W﻿ / ﻿41.498667°N 81.705139°W﻿ / 41.498667; -81.705139﻿ (Main Avenue Bridge) | Ohio | United States | bridges
288  | 2021  | Sydney Opera House[12] |  | 1973  | Sydney
33°51′24″S 151°12′55″E﻿ / ﻿33.85667°S 151.21528°E﻿ / -33.85667; 151.21528﻿ (Sydney Opera House) | New South Wales | Australia | buildings
289  | 2022  | David Thompson's Surveying and Mapping of the Northwest of North America[24] |  | 1814  |  |  | Canada & United States | surveys & maps
290  | 2022  | Portage Lake Bridge[25] |  | 1959  | Hancock and Houghton
47°7′25.9″N 88°34′26.7″W﻿ / ﻿47.123861°N 88.574083°W﻿ / 47.123861; -88.574083﻿ (Portage Lake Bridge) | Michigan | United States | bridges
291  | 2022  | Salmon Creek Dam[26] |  | 1914  | Juneau
58°20′30″N 134°24′12″W﻿ / ﻿58.34167°N 134.40333°W﻿ / 58.34167; -134.40333﻿ (Salmon Creek Dam) | Alaska | United States | dams
292  | 2023  | New Orleans Drainage System[27] |  | 1900  | New Orleans
29°59′12″N 90°7′28″W﻿ / ﻿29.98667°N 90.12444°W﻿ / 29.98667; -90.12444﻿ (New Orleans Drainage System) | Louisiana | United States | water supply & control
293  | 2023  | Crystal Springs Dam[28] |  | 1890  | San Mateo County
37°31′43″N 122°21′44″W﻿ / ﻿37.52861°N 122.36222°W﻿ / 37.52861; -122.36222﻿ (Crystal Springs Dam) | California | United States | dams
294  | 2024  | Morris Dam[29] |  | 1934  | Azusa
34°10′29″N 117°52′52″W﻿ / ﻿34.17472°N 117.88111°W﻿ / 34.17472; -117.88111﻿ (Morris Dam) | California | United States | dams

## See also

[edit]

* List of Historic Mechanical Engineering Landmarks

## References

[edit]

1. ^ Walpole, Ben. "Meet the man who has been to 150 ASCE Historic Civil Engineering Landmarks". American Society of Civil Engineers. ASCE. Retrieved 30 November 2024.
2. ^ Stephens, Odin L.; Mengak, Michael T.; Osborn, David; Miller, Karl V. (March 2005). "Using Milorganite to temporarily repel white-tailed deer from food plots" (PDF). Wildlife Management Series. WSFR. Archived from the original (PDF) on 2012-03-29.
3. ^ "International Boundary Marker | ASCE". www.asce.org. Retrieved 2017-10-20.
4. ^ The Statue of Liberty is on Liberty Island, federal property administered by the National Park Service, located within the territorial jurisdiction of the State of New York. A pact between New York and New Jersey, ratified by Congress in 1834, declared this issue.
5. ^ "Thomas Viaduct Railroad Bridge | ASCE". www.asce.org. Retrieved 2021-12-07.
6. ^ "Tacoma Narrows Bridges | ASCE". www.asce.org. Retrieved 2021-12-07.
7. ^ Harding, Matt (20 December 2016). "Canal System Now Engineering Landmark". Yuma Sun. p. 1.
8. ^ "Canal du Midi Designated as International Historic Civil Engineering Landmark". American Academy of Water Resources Engineers. 2016-08-30. Retrieved 2022-08-20.
9. ^ Morris, Paula (2016-09-14). "Rainhill reaffirmed as the birthplace of the railway". St Helens Star. Retrieved 2022-08-20.
10. ^ Lundy, John (2017-09-11). "Centenarian engineer, Aerial Lift Bridge share honors". Duluth News Tribune. Retrieved 2022-08-20.
11. ^ "In Military Lingo, MRBM = NHCEL". Preservation in Mississippi. 2018-05-24. Retrieved 2022-08-20.
12. ^ a b "Sydney Opera House | ASCE". Retrieved 2022-08-10.
13. ^ "Peru: Qhapaq Ñan designated ASCE historic civil engineering landmark". Andina. 2017-08-11. Retrieved 2022-08-20.
14. ^ "Ανακήρυξη του Ευπαλίνειου Όρυγματος ως Ιστορικού Τοπόσημου Τεχνολογίας Πολιτικού Μηχανικού" [Designation of Tunnel of Eupalinos as a Historical Civil Engineering Landmark]. National Technical University of Athens School of Civil Engineering (in Greek). 2017-10-29. Retrieved 2022-08-20.
15. ^ "Old River Station | Cincinnati Section ASCE". Retrieved 2022-08-10.
16. ^ "Boundary Layer Wind Tunnel, London, Ontario". Canadian Society for Civil Engineering. Retrieved 2020-08-20.
17. ^ Booth, Kenneth (2018-10-29). "ASCE recognises ICE as historic civil engineering landmark". Building Design & Construction. Retrieved 2022-08-20.
18. ^ Johnson, Phil (2020-07-25). "Union Chain Bridge gets international badge of honour to mark bicentenary". The Scotsman. Retrieved 2022-08-20.
19. ^ "Kaibab Trail Suspension Bridge | ASCE AZ Section". Retrieved 2022-08-10.
20. ^ "Union Pacific Railroad | csengineermag.com". Retrieved 2022-08-10.
21. ^ "Silver Bridge Collapse - Creation of National Inspection Standards | HMdb.org". Retrieved 2022-08-10.
22. ^ "NASA Vehicle Assembly Building | NASA". Retrieved 2022-08-10.
23. ^ "Main Avenue Bridge | ASCE Sections". Retrieved 2022-08-10.
24. ^ Gilbert, David R.; Bartlett, F. Michael; Bedford, Cole G. (2022). David Thompson's Surveying and Mapping of the Northwest of North America. CSCE Annual Conference. Whistler, British Columbia.
25. ^ "Portage Lake Bridge | MTU". www.mtu.edu/news. Retrieved 2022-08-10.
26. ^ Kuhn, Jonson (2022-09-10). "Salmon Creek Dam recognized as a National Historic Civil Engineering Landmark". Juneau Empire. Retrieved 2022-09-13.
27. ^ "New Orleans drainage system recognized as Historic Civil Engineering Landmark". www.asce.org. 2023-05-23. Retrieved 2024-12-02.
28. ^ "Crystal Springs Dam recognized as National Historic Civil Engineering Landmark". www.asce.org. 2023-12-06. Retrieved 2024-12-02.
29. ^ "Morris Dam dedicated as National Historic Civil Engineering Landmark". www.asce.org. Retrieved 2024-10-18.

## External links

[edit]

* American Society of Civil Engineers Historic Landmarks
* Media related to Historic Civil Engineering Landmarks at Wikimedia Commons

Map all coordinates using OpenStreetMap

Download coordinates as:

* KML
* GPX (all coordinates)
* GPX (primary coordinates)
* GPX (secondary coordinates)