Union Pacific 3985,
Westbound at Sloat, California,
2 September 2005.
Source: UP 39859-02-05 022xxx4rp sloat
Uploaded by PDTillman.
Author: Drew Jacksich
from San Jose, California.
Union Pacific 3985
returns to Cheyenne, Wyoming,
Available on YouTube at
Union Pacific 3985, or UP 3985, is a four-cylinder simple articulated 4-6-6-4 Challenger-type Steam Locomotive, owned by Union Pacific Railroad.
It was built in 1943 by The American Locomotive Company of Schenectady, New York. The Locomotive is one of only two of the original 105 Union Pacific Challengers in existence, the other being UP 3977 on static display in North Platte, Nebraska. Before it was stored, it was the largest and heaviest operational preserved Steam Locomotive in the World.
English: Union Pacific Challenger 3985 steams past our front yard
in Alton, Iowa, United States of America.
Deutsch: Dampflok Challenger 3985 in Alton, Iowa, USA.
Photo: 1 October 2008.
Author: Mark Evans
If the Locomotive is restored and does return to Service, it will become the World's second-largest operating Steam Locomotive after UP 4014.