Benjamin Henry Latrobe II

American civil engineer and railroad official

Benjamin Henry Latrobe II

Born| (1806-12-19)December 19, 1806

Philadelphia, Pennsylvania, U.S.

Died| October 19, 1878(1878-10-19) (aged 71)

Baltimore, Maryland, U.S.

Resting place|

* Green Mount Cemetery
* Baltimore, Maryland, U.S.

Occupations|

* Civil Engineer
* railway executive

Employer| Baltimore and Ohio Railroad
Known for| Thomas Viaduct
Spouse|

Maria Eleanor "Ellen" Hazlehurst

(m. 1833; died 1872)​

Children| 7
Father| Benjamin Henry Latrobe
Relatives| Henry Sellon Boneval Latrobe (brother),Julia Latrobe (sister) John H. B. Latrobe (brother),

Benjamin Henry Latrobe II (December 19, 1806 – October 19, 1878) was an American civil engineer best known for pioneering railway bridges, notably the Thomas Viaduct, and serving as chief engineer for the Baltimore and Ohio Railroad. His innovations in wooden bridges and curved masonry viaduct designs significantly advanced American civil engineering in the 19th century. Latrobe also collaborated with Wendel Bollman, a prominent bridge designer, who contributed to early developments in iron truss bridges. His engineering survey plans for crossing the Allegheny Mountains were later incorporated into legislation guiding the construction of the Pacific railroads, establishing his lasting impact on national infrastructure.

## Family

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Benjamin Henry Latrobe II was born in Philadelphia, Pennsylvania, on December 19, 1806,[1]: 243 Latrobe was the youngest son of Benjamin Henry Latrobe, who, six years previously, had married his second wife, Mary Elizabeth Hazlehurst (1771–1841), the eldest daughter of Issac Hazlehurst, a Philadelphia merchant [1] and business partner for Robert Morris.[2]

Latrobe married Maria Eleanor "Ellen" Hazlehurst (1806–1872) of Altoona, Pennsylvania on March 12, 1833. They had four sons (two of whom survived childhood) and three daughters.

Their eldest son, Charles Hazlehurst Latrobe (1833–1902), moved to Florida, where he married and later joined the Confederate States Army. A civil engineer like his father and grandfather, Charles H. Latrobe later moved back to Baltimore, where he served as the city's chief engineer for 25 years and continued to design public buildings and bridges noted for their beauty.[3][4] His brother, Benjamin Henry Latrobe, III (1840–1901) became an Episcopal Church priest and rector of the Church of Our Savior in Silver Spring, Maryland.[5]

## Early life

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Latrobe attended Georgetown College in Washington, D. C. and graduated from what was then known as St. Mary's College in Baltimore, Maryland, in 1823.[6] After that, he entered the law office of Charles F. Mayer, a prominent attorney in Baltimore, becoming a member of the Baltimore Bar in 1825.[1] After a short stay in New Jersey, tending to his mother's affairs, he returned to Baltimore in 1830 to practice law again.

Although trained in the law, Latrobe was already an accomplished draftsman and mathematician.[1] In 1830, he left the practice of law and entered into civil engineering. Latrobe read Jean-Rodolphe Perronet's books on bridges in the French language and traveled to Philadelphia to study the bridges there.[7] However, during this period in New Jersey, Latrobe learned about working with the timber business and found that he loved surveying.[6] Meanwhile, his elder brother John, who had been educated as an engineer, changed his profession to law. At that time, he was a junior legal counsel for the Baltimore and Ohio railroad.[2] Through his brother's influence, Latrobe was hired as a rodman on the survey locating the railroad west of Ellicott's Mills.[2][8][7]: 129

## Career with the Baltimore and Ohio Railroad

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In 1827, the Maryland General Assembly passed "An Act to Incorporate the Baltimore and Ohio Railroad" and "An Act to Authorize the President, Managers, and Company of the Washington and Baltimore Turnpike Road to Construct a Rail Road from the City of Baltimore to the District of Columbia in the Direction of Washington." Similarly, the Federal government passed legislation to authorize a railroad within the District of Columbia in 1828.[9] This was to be the first rail link to Washington. No progress, however, had been made on this railroad as the Company was busy building the main line to Frederick. But, in 1829, the Chesapeake and Ohio Canal Company obtained two legal injunctions that "...restrain(ed) the (railroad) from constructing the road at all, within the limits of Frederick County." This brought the progress of the main line work to a complete halt, and the focus then became on the Washington branch.[10] In 1831, Jonathan Knight, the Chief Engineer of the road, appointed Latrobe and Henry J. Ranney to locate the railroad [10][11]: 47–48 assisted by Henry R. Hazlehurst.

In 1834, the legal issues had been resolved to the point that work on the railroad could be resumed in conjunction with the canal company, and Latrobe located the railroad from Frederick County to Harpers Ferry, (West) Virginia.[1]

In 1835, Latrobe became the chief engineer for the Baltimore and Port Deposit Railroad Company, which helped build the first rail link (Baltimore to Havre-de-Grace) between Philadelphia and Baltimore.[12]: 38 The road crossed the Susquehanna River using a series of three bridges supported by piles which at that time were the first long bridges of that type erected in the United States.[1]

Model of Latrobe Truss built at Harper's Ferry in 1836-37 by Louis Wernwag

In 1836, working with Louis Wernwag, Latrobe designed the first viaduct and bridge over the Chesapeake and Ohio Canal and Potomac River at Harper's Ferry, Virginia, now West Virginia, for the Baltimore and Ohio railroad.[13]: 34 [14] The bridge was a wooden structure designed by Latrobe, nicknamed the "Latrobe truss" and built by Wernwag in 1836-1837.[14][11]: 31

Thomas Viaduct in 1970

Latrobe designed the Thomas Viaduct for the Baltimore and Washington railroad, a "basket handle"[7] arch bridge which became the largest and first curved masonry railway viaduct in the United States when completed in 1835. The viaduct spans the Patapsco River between Relay and Elkridge, Maryland.[11]: 50 As the project engineer, Latrobe worked closely with the railroad's construction chief, Caspar Wever.[7]: 159–60 Nicknamed "Latrobe's Folly" by those who doubted the massive structure could support itself, the bridge remains in use today (as of 2024), carrying far heavier loads than ever envisioned.[7]

1860 Baltimore & Ohio Bridge at Harper's Ferry with Latrobe and Bollman Trusses

In 1838, Latrobe completed reconnaissance and surveys to extend the Main Stem of the Baltimore and Ohio railroad from Harper's Ferry to Wheeling and Pittsburgh.[13]: 35 The difficulties of locating the railroad, especially west of Cumberland in the Cheat and Tygart Valley rivers, induced the railroad's Board of Directors to call upon two consulting engineers (Jonathan Knight and John Child) to work with Latrobe to finalize the location of the road.

In 1842, Latrobe became chief engineer of the Baltimore and Ohio railroad[8][12]: 54 and was appointed to the concurrent position of general superintendent of the road in 1847.[12]: 57 The B&O was thwarted at that time by its rival the Pennsylvania Railroad from directly building in that state. Over the next 5 years, Latrobe was instrumental in the design and building of the B&O between Cumberland and the Ohio River through (West) Virginia. Latrobe worked with his principal assistants, George Hoffman, J. C. C. Hoskins and Albert Fink.

## Senior Roles with B&O's Partners

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As the construction of the B&O network between Cumberland and Wheeling was wrapping up, Latrobe took on the chief engineer role in 1851 of the B&O-backed Northwestern Virginia Railroad, which was to link Parkersburg, (West) Virginia with the B&O network at Grafton, (West) Virginia, providing a shorter and more southern path to the West than the route through Wheeling.[13] Under Latrobe's leadership, build out of the Northwestern went smoothly, finishing in 1857, and it became part of the B&O's main stem, from Baltimore to St. Louis, Missouri.[15]

The Pittsburgh and Connellsville Railroad (P&C) became Latrobe's next challenge when he was appointed its president in 1856. Fraud by its former leader William Larimer, Jr., had set back progress the P&C had made in providing the B&O with a connection from Baltimore to Pittsburgh. By the time Latrobe joined, 33 of the 58 miles of track had been completed between Connellsville and Pittsburgh with the remainder coming into service under his leadership by the end of 1861.

Connecting with the B&O at Cumberland entailed his greatest hurdle to overcome - building up and over the summit of the Alleghenies at a maximum grade of sixty feet (1.25%) to the mile, including the construction of the 4000 feet Sand Patch Tunnel - which came to fruition in 1871. While Latrobe's engineering expertise was key to this accomplishment, he stepped away from the presidency of the P&C in 1864, leaving the responsibility of dealing with P&C's financing, internal board disagreements, and the political machinations of the competitor Pennsylvania Railroad to others, and returned to the chief engineer position to finish the job of linking the B&O and P&C.[16]: 28–34 In just a few years after that completion, P&C's funding challenges came to a head with the result that its track was leased to the B&O on a long-term basis, and it was folded into the bigger railroad, as part of the B&O's Pittsburgh District,[17] later known as CSX's Keystone Subdivision.

1843 lithograph,'Map, exhibiting the railway route between Baltimore & St. Louis, together with the other principal lines in the eastern, middle & western states; prepared under the direction of B. H. Latrobe, Ch. LOC 98688350

In the late 1860s, Latrobe became a consulting engineer for the Troy and Greenfield Railroad and worked on the construction of the Hoosac Tunnel in Massachusetts, then the second-longest tunnel in the world.[18]

## Leadership roles

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Main article: Institution of American Civil Engineers

On December 17, 1838, a petition was circulated asking civil engineers to meet in 1839 in Baltimore, Maryland, to organize a permanent society of civil engineers.[19] Before that, thirteen notable civil engineers largely identifiable as being from New York, Pennsylvania, or Maryland met in Philadelphia. This group presented the Franklin Institute of Philadelphia with a formal proposal that an Institution of American Civil Engineers be established as an adjunct of the Franklin..."[19] This group included Latrobe and Chief Engineer Jonathan Knight. Membership in the new society was restricted to engineers, and "architects and eminent machinists were to be admitted only as Associates."[20] The proposed constitution failed, and no further attempts were made to form another society.[19] Miller later ascribed the failure to the difficulties of assembling members due to available means for traveling in the country at the time.[19] One of the other difficulties members would have to contend with was the requirement to produce each year one previously unpublished paper or "...present a scientific book, map, plan or model, not already in the possession of the Society, under the penalty of $10."[20] In that same period, the editor of the American Railroad Journal commented that effort had failed in part due to certain jealousies that arose due to the proposed affiliation with the Franklin Institute.[19] That journal continued discussion on forming an engineers' organization from 1839 thru 1843 serving its own self-interests in advocating its journal as a replacement for a professional society but to no avail.

## Death

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Latrobe died on October 19, 1878, at his home in Baltimore.[2] Pallbearers included fellow engineers Charles P. Manning, chief engineer for the Baltimore City water works and former B&O and P&C colleague, General William Price Craighill, future president of the American Society of Civil Engineers-Mendes Cohen, Richard McSherry, Cary Breckinridge Gamble. Fellow railroad directors who attended included Daniel J. Foley and Henry A Thompson.[2] At his funeral, The speaker's eulogy noted that he could not speak to the "... great achievements or the notable work he had so well done (sic). History ... would take care of that."[2] The eulogy noted that the commercial prosperity of Baltimore, the "... tunneled hills and long lines of railroads were monuments to that success and would live longer than marble or granite."[2] The American Society of Civil Engineers, or ASCE, noted that although Latrobe was not a member, it wanted to recognize him as "... one of the pioneers of the engineering profession in this country."[21]

Latrobe was buried in Green Mount Cemetery, whose landscape architecture he had designed, beside his wife.[22] His brother John H. B. Latrobe was on the cemetery's board of directors as well as helped found the Maryland Historical Society, which maintains the family papers.[23]

## Legacy

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Latrobe played a prominent role in the construction of the Baltimore and Ohio railroad, particularly the location of the road in one of the first crossings of the Alleghenies.[21] Latrobe's plan for a maximum grade of 2.2%, or 116 feet per mile [13] : 68 over the crest in 1848 became the standard for the pacific railroads in the 1860s.[6]

"(T)he two Latrobes ... spent virtually their entire professional careers, spanning much of the 19th century. Benjamin supervised the construction of most of the line between Baltimore and the Ohio River; he subsequently became the B&O Railroad's chief engineer. (While his brother) John made many of the financial and political deals that enabled the line to be built." (Dilts, 2004) [6]

## References

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1. ^ a b c d e f Stuart, Charles Beebe (1871). Lives and works of civil and military engineers of America. New York: Van Nostrand. Retrieved March 22, 2024. This article incorporates text from this source, which is in the public domain.
2. ^ a b c d e f g "Benjamin Latrobe - Search - Baltimore Sun Archive". Baltimore Sun. October 21, 1878. p. 1.
3. ^ "The Latrobe Family and Charm City at Monument City Blog". Archived from the original on April 25, 2018. Retrieved April 24, 2018.
4. ^ "Latrobe, Charles Hazelhurst", in Concise Dictionary of American Biography (1964), New York: Scribner's.
5. ^ "Rev. Benjamin Henry Latrobe, III b. 4 Dec 1840 Baltimore, Independent Cities, Maryland, USA d. 7 Jul 1901 Baltimore, Independent Cities, Maryland, USA: JHBL Genealogy". This article incorporates text from this source, which is in the public domain.
6. ^ a b c d Dilts, James D. "The Latrobes: First Family of Baltimore Architecture and Engineering." Baltimore Civil Engineering History. 2004. American Society of Civil Engineers pages 41-52.
7. ^ a b c d e Dilts, James D. (1996). The Great Road: The Building of the Baltimore and Ohio, the Nation's First Railroad, 1828–1853. Palo Alto, CA: Stanford University Press. ISBN 978-0-8047-2629-0.
8. ^ a b Treese, Lorett (2003). Railroads of Pennsylvania: Fragments of the Past in the Keystone Landscape. Mechanicsburg, PA: Stackpole Books. p. 194\. ISBN 978-0-8117-2622-1.
9. ^ Cullen, Elizabeth O. (January 1957). "The Coming of the Railroads to Washington, D. C." Records of the Columbia Historical Society. 57 (1): 26–32\. JSTOR 40067182. Retrieved March 23, 2024.
10. ^ a b Smith, W (1853). A History and Description of the Baltimore and Ohio Railroad. Baltimore, MD: J. Murphy & Company. p. 29. Retrieved March 23, 2024. This article incorporates text from this source, which is in the public domain.
11. ^ a b c Harwood, Herbert H. Jr. (1994). Impossible Challenge II: Baltimore to Washington and Harpers Ferry from 1828 to 1994. Baltimore, MD: Barnard, Roberts & Co. ISBN 0-934118-22-1.
12. ^ a b c Stover, John F. (1987). History of the Baltimore and Ohio Railroad. West Lafayette, IN: Purdue University Press. ISBN 0-911198-81-4.
13. ^ a b c d Smith, W. P. (William Prescott). (1858). The book of the great railway celebrations of 1857: embracing a full account of the opening of the Ohio & Mississippi, and the Marietta & Cincinnati railroads, and the Northwestern Virginia branch of the Baltimore and Ohio railroad, with ... an account of the subsequent excursion to Baltimore, Washington and Norfolk ... New York: D. Appleton & Co..
14. ^ a b Paula Stoner Dickey and Robert M. Vogel (June 26, 1973). "National Register of Historic Places Inventory/Nomination: B & O Railroad Potomac River Crossing". National Park Service. With accompanying photo
15. ^ Baltimore & Ohio Railroad, Parkersburg Bridge, Ohio River, Parkersburg, Wood County, WV, Historic American Engineering Record, accessed August 22, 2012
16. ^ Twelfth Annual Report of the President and Directors to the Stockholders of the Pittsburgh and Connellsville Rail Road Company. 1864.
17. ^ Railroad History, Pittsburgh Plan, 1923 This article incorporates text from this source, which is in the public domain.
18. ^ Latrobe, Benjamin H. II (1869). Report of Benj. H. Latrobe, Consulting Engineer, on the Troy and Greenfield Railroad and Hoosac Tunnel. Boston.`{{cite book}}`: CS1 maint: location missing publisher (link) This article incorporates text from this source, which is in the public domain.
19. ^ a b c d e Calhoun, Daniel Hovey. The American civil engineer: Origins and conflict. Technology Press, Massachusetts Institute of Technology, 1960.
20. ^ a b This article incorporates text from this source, which is in the public domain. Hunt, C. Warren. (1897). Historical sketch of the American Society of Civil Engineers. New York: [Printed by order of the Board of Direction]. Accessed at HathiTrust
21. ^ a b anon. (1878). Proceedings. New York: American Society of Civil Engineers. p. 123\. hdl:2027/uva.x002207884. Retrieved March 23, 2024.
22. ^ "Benjamin Henry Latrobe, Jr". TCLF.org. The Cultural Landscape Foundation. Retrieved July 30, 2019.
23. ^ "John H.B. Latrobe, MSA SC 3520-14346".

## External links

[edit]

* Family tree in Genealogisches Handbuch der baltischen Ritterschaften, Estland, Görlitz 1930 (in German)

Authority control databases

International|

* ISNI
* VIAF
* FAST
* WorldCat

National|

* Germany
* United States
* Israel

People|

* Structurae

Other|

* SNAC
* 2
* 3
* 4
* 5
* Yale LUX

*[m.]: married