Union Pacific No. 4455

Union Pacific No. 4455
Technical specifications
Manufacturer(s)	Lima Locomotive Works
Build date	1920
Classification	S-6
Wheel arrangement	0-6-0
Rail gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Valve gear	Walschaerts
Cylinders	Two, outside
Boiler pressure	180 psi (1,200 kPa)
Bore stroke	21 in × 26 in (530 mm × 660 mm)
Fuel type	Coal
Performance figures
Tractive effort	34,400 lbf (153,000 N), 78,000 lbf (350,000 N) with booster
Service information
Running numbers	4455
Disposition details
Disposition	Preserved

Union Pacific No. 4455 is a class S-6 0-6-0 switcher built by the Lima Locomotive Works of Lima, Ohio in 1920 for the Union Pacific Railroad (UP) where it worked as a yard goat. It was later sold to Monolith Portland Midwest Company, Laramie, WY, in 1949.

The Monolith Portland retired #4455 in 1970 and donated it to the Colorado Railroad Museum where it was placed on static display today.

Gallery

Union Pacific #4455 on static display with Colorado & Southern Rotary Steam Snow Plow No. 99201

Preserved Union Pacific Locomotives
UP Class 700	No. 737
UP Class C-2	No. 237 • No. 264 • No. 561 • No. 616 • No. 618 • No. 6051 • No. 6237
UP Class C-57	No. 407 • No. 421 • No. 428 • No. 437 • No. 460 • No. 477 • No. 480 • No. 481 • No. 485
UP Class MK-1	No. 2005
UP Class MK-7	No. 2537
UP Class MK-9	No. 2295
UP Class MK-10	No. 2564
UP Class T-57	No. 1242 • No. 1243
UP Class P-1	No. 3206
UP Class P-2	No. 3203
UP Class TTT-6	No. 5511
UP Class S-4	No. 4420
UP Class S-5	No. 4436 • No. 4439 • No. 4442
UP Class S-6	No. 4455 • No. 4466
UP Class FEF-1	No. 814
UP Class FEF-2	No. 833
UP Class FEF-3	No. 838 • No. 844
UP Class 9000	No. 9000
UP Heavy Challengers	No. 3977 • No. 3985
UP Big Boys	No. 4004 • No. 4005 • No. 4006 • No. 4012 • No. 4014 • No. 4017 • No. 4018 • No. 4023