Union Pacific 3977

Coordinates: 41°08′52″N 100°45′11″W / 41.147853°N 100.753113°W

Union Pacific 3977
Type and origin
Power type Steam
Builder American Locomotive Company
Serial number 70160
Build date June 1943
Specifications
Configuration 4-6-6-4
Gauge 4 ft 8 12 in (1,435 mm)
Career
Operator(s) Union Pacific
Number(s) 3977
Nicknames "Challenger"
Retired October 19, 1968
Disposition On static display

Union Pacific 3977 or UP 3977 is a 4-6-6-4 steam locomotive originally owned by Union Pacific Railroad. Its counterpart, Union Pacific 3985, is the largest operating steam locomotive in the world. 3977 was donated to the City of North Platte, Nebraska for display on October 19, 1968. It is on display in Cody Park, next to EMD DDA40X #6922.

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