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3/10/2025
 
 
 
 
 
Owner: Union Pacific Railroad Company
Model:Alco 4-6-6-4Built As:UP 3991 (4-6-6-4)
Serial Number:70180Order No:S-1879
Frame Number:21X32 cylinders, 69" driversBuilt:6/1943
Notes:Schenectady 06/1943, retired 03/1961
Other locos with this serial:  UP 3991(4-6-6-4)
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UP 4-6-6-4 #3991
Title:  UP 4-6-6-4 #3991
Description:  The engineer in the cab window is dwarfed by the massive 4-6-6-4 Challenger type steam locomotive stretching in front of him. History - Alco-Schenectady, 6/1943, serial #70180.After almost 18 years of service, the loco was "vacated" March of 1961. Specs - 69" drivers, impressive 280 psi boiler pressure, four 21x32" cylinders, engine weight of 633,500 lb and tractive effort of 97,350 lb. The phot is by Glenn H. Davis.
Photo Date:  7/28/1954  Upload Date: 2/26/2025 5:57:13 PM
Location:  North Platte, NE
Author:  Gary Everhart
Categories:  Roster,Steam,Action
Locomotives:  UP 3991(4-6-6-4)
Views:  16   Comments: 0


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