Union Pacific 4466

Preserved American 0-6-0 locomotive

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Union Pacific 4466

UP No. 4466 on static display at the California State Railroad Museum

| Type and origin

Power type| Steam
Builder| Lima Locomotive Works
Serial number| 6003
Build date| October 1920
| Specifications

Configuration:
| ​
• Whyte| 0-6-0
Gauge| 4 ft 8+1⁄2 in (1,435 mm)
Driver dia.| 51 in (1,295 mm)
Adhesive weight| 159,000 lb (72,000 kg)
Loco weight| 159,000 lb (72,000 kg)
Fuel type| Coal
Boiler pressure| 180 psi (1,200 kPa)
Cylinder size| 21 in (530 mm) dia × 26 in (660 mm) stroke
| Performance figures

Tractive effort| 34,400 lbf (153,000 N), 78,000 lbf (350,000 N) with booster
| Career

Operators| Union Pacific
Class| S-6 (Cabside class S-51)
Numbers| UP 4466
Retired| 1962 (revenue service)
1999 (excursion service)
Restored| 1984
Current owner| California State Railroad Museum
Disposition| On static display

Union Pacific 4466 is an 0-6-0 steam locomotive built in October 1920 by the Lima Locomotive Works for the Union Pacific Railroad (UP) to perform switching chores and transfer runs.

## History[edit]

### Revenue service[edit]

UP 4466 spent most of its career in Cheyenne, Wyoming, as a shop switcher and was the UP Cheyenne Shop's last steam shop switcher. After its stint in Cheyenne, 4466 was transferred to Grand Island, Nebraska in 1960. The locomotive was retired from revenue service in July 1962.[1] It continued to remain in Grand Island in storage until 1973 when it was donated to the Railway and Locomotive Historical Society.[2]

### Excursion service[edit]

In 1978, No. 4466 was donated to the California State Railroad Museum. In 1984, it was restored to operating service and pulled excursion trains for the museum. In 1986, 4466 ventured to Vancouver, British Columbia, to be part of Steam Expo '86.[3] This was not the only time 4466 took part in such a celebration; it also went to Sacramento (its current home) to take part in the Rail Fair of 1991.

### Disposition[edit]

In 1999, new California emissions regulations banned the operation of coal-fired steam locomotives, which caused the 4466 to be retired and put on indefinite static display. In 2013 it was taken out to take part in the Union Pacific's 150th anniversary celebration. As of 2023, it is currently on static display at the California State Railroad Museum.

## Gallery[edit]

* Union Pacific 4466 at SteamExpo 86

* Union Pacific 4466 at SteamExpo 86

## References[edit]

1. ^ "UP 0-6-0 Class S-6 4466".
2. ^ "Richard Leonard's Random Steam Photo Collection - Union Pacific 0-6-0 4466". Railarchive.net. Retrieved February 4, 2014.
3. ^ "May 2021 Marks the 35th Anniversary of 'Steam Expo' Held during Expo '86" (PDF). WCRA News. Vol. 61, no. 2\. West Coast Railway Association. May 2021. p. 3\. Archived from the original (PDF) on January 29, 2022. Retrieved March 4, 2022.

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Preserved rolling stock at the California State Railroad Museum

Locomotives|

| Steam|

* ATSF 1010
* ATSF 2925
* ATSF 5021
* CP 1 Gov. Stanford
* CP 3 / SP 1 C. P. Huntington
* CP 233
* GR 10
* NPC 12 Sonoma (replica)
* NSL 1
* NWP 112
* SP 1771
* SP 2467
* SP 4294
* UP 4466
* V&T 12 Genoa
* V&T 13 Empire
* V&T 21 J. W. Bowker

|

Diesel|

* AMTK 281
* ATSF 347B
* ATSF 347C
* ATSF 2394
* ATSF 9820
* SN 402
* SS 2
* SS 2008
* SS 2030
* SP 1000
* SP 5208
* SP 6051
* SP 6402
* SP 6819
* USAF 1655
* WP 913

Compressed air|

* HM 12

Electric|

* SCPC 2

Passenger cars|

* ATSF 1474 Cochiti
* CN 1683 St. Hyacinthe
* GN 42
* NC 3 Silver State
* V&T 16

Freight cars|

* FGEX 35832
* UP 25256

MoW equipment|

* PG&E tram
* SP 137
* SP 205
* SP 318
* SP 2510
* SP 7070
* SP 7071
* UP EC-1

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