Union Pacific 3977

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

Union Pacific 3977
Up3977.JPG
Type and origin
Power type Steam
Builder American Locomotive Company
Serial number 70160
Build date June 1943
Specifications
Configuration:
 • Whyte 4-6-6-4
Gauge 4 ft 8 12 in (1,435 mm)
Career
Operators Union Pacific
Numbers 3977 (coal burner, 1943), 3710 (oil burner, 1952), 900079 (MOW snow melter, 1961) renumbered back to 3977 for display in North Platte 1968.
Nicknames "Challenger"
Retired 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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