3/20/2025
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Home
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Union Pacific Railroad Company
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Locomotives
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Alco 4-6-6-4
> UP 3939
Pictures of UP 3939
Owner:
Union Pacific Railroad Company
Model:
Alco 4-6-6-4
Built As:
UP 3939 (4-6-6-4)
Serial Number:
72801
Order No:
S-1938
Frame Number:
21X32 cylinders, 69" drivers
Built:
8/1944
Notes:
Schenectady 08/1944 (2nd #3939), retired 06/1959
Other locos with this serial:
UP 3939(4-6-6-4)
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Title:
UP 4-6-6-4 #3939
Description:
Sadly, this montster steam locomotive was caught sitting in the scrap line at Cheyenne, WY. History - Alco-Schenectady, 8.1944, serial #72801, After almost 15 years of service, the loco was"vacated" in June of 1959. The date of the photo shows it in a storage/scrap line.Specs - 69" drivers, impressive 280psi boiler pressure, four 21x32" cylinders, engine weight of 634,500 lb and tractive effort of 97,350 lb. The photo was taken by an unknown photographer.
Photo Date:
10/2/1957
Upload Date:
2/26/2025 5:57:12 PM
Location:
Cheyenne, WY
Author:
Gary Everhart
Categories:
Roster,Steam,Action
Locomotives:
UP 3939(4-6-6-4)
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31
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