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7/28/2025
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Home > Union Pacific Railroad Company > Locomotives > Alco 4-6-6-4 > UP 3985
Pictures of UP 3985
 
Owner: Union Pacific Railroad Company
Model:Alco 4-6-6-4Built As:UP 3985 (4-6-6-4)
Serial Number:70174Order No:S-1879
Frame Number:21X32 cylinders, 69" driversBuilt:6/1943
Notes:Challenger class 4664-4, donated to RRHMA.
Other locos with this serial:  UP 3985(4-6-6-4) CRR 676(4-6-6-4)
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UP 3985 steam train
Title:  UP 3985 steam train
Description:  UP passenger train running back to home base in Cheyenne WY 3 miles northwest of Topeka KS
Photo Date:  6/23/2001  Upload Date: 12/18/2004 12:33:33 PM
Location:  Topeka, KS
Author:  Eric Burris
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  914   Comments: 1
UP 3985 steam train
Title:  UP 3985 steam train
Description:  UP passenger train running back to home base in Cheyenne WY 3 miles northwest of Topeka KS
Photo Date:  6/23/2001  Upload Date: 12/18/2004 12:33:33 PM
Location:  Topeka, KS
Author:  Eric Burris
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  850   Comments: 0
UP 3985
Title:  UP 3985
Description:  NRHS Sprcial speeds north on UP's Chester Sub. over the Kaskaskia River.
Photo Date:  7/1/2001  Upload Date: 5/17/2008 2:42:08 AM
Location:  Roots, IL
Author:  Terry Redeker
Categories:  Roster,Scenic,Bridge,Passenger,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  747   Comments: 1
UP 3985
Title:  UP 3985
Description:  NRHS Special has just been wyed in Gorham and is ready to head back to St.Louis.
Photo Date:  7/1/2001  Upload Date: 5/17/2008 2:44:55 AM
Location:  Gorham, IL
Author:  Terry Redeker
Categories:  Roster,Yard,Steam,Passenger,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  873   Comments: 0
UP 3985
Title:  UP 3985
Description:  UP Challenger 3985 rolls south through Ault with a Cheyenne Fronuier Days deadhead move to Denver
Photo Date:  7/19/2001  Upload Date: 9/15/2016 7:40:08 PM
Location:  Ault, CO
Author:  Richard Kundert
Categories:  Steam,Passenger,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  456   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/28/2001  Upload Date: 10/28/2011 6:52:34 PM
Location:  West Chicago, IL
Author:  max linder
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  525   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/28/2001  Upload Date: 10/28/2011 6:52:40 PM
Location:  West Chicago, IL
Author:  Mike Conn
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  724   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  10/16/2001  Upload Date: 1/27/2006 10:33:47 PM
Location:  Davenport, NE
Author:  Bob Wilcox
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  1116   Comments: 0
Challenger makes early moring departure
Title:  Challenger makes early moring departure
Description: 
Photo Date:  10/17/2001  Upload Date: 1/27/2006 9:56:06 PM
Location:  Marysville, KS
Author:  Bob Wilcox
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  1300   Comments: 2
Reason I took Pictures
Title:  Reason I took Pictures
Description:  In the first place. I'd heard from a friend that this was coming into town. I decided to see it.
Photo Date:  6/1/2002  Upload Date: 11/22/2005 2:00:05 PM
Location:  Council Bluffs, IA
Author:  Rick C
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  560   Comments: 0
Stopped
Title:  Stopped
Description:  The day after the 3985 was at Council Bluff's Golden Spike Park she went for an excursion to Sargent Bluff IA and back. I followed from Honey Creek IA and took this from the Hwy 30 overpass.
Photo Date:  6/1/2002  Upload Date: 11/22/2005 2:17:18 PM
Location:  Missouri Valley, IA
Author:  Rick C
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  930   Comments: 1
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/10/2002  Upload Date: 11/24/2005 3:06:26 PM
Location:  Boone, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  651   Comments: 66650113
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/10/2002  Upload Date: 6/10/2002 12:00:00 AM
Location:  Boone, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  616   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/10/2002  Upload Date: 11/24/2005 3:06:27 PM
Location:  Boone, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  580   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/10/2002  Upload Date: 11/24/2005 3:06:28 PM
Location:  Boone, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  724   Comments: 1
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/10/2002  Upload Date: 11/24/2005 3:06:29 PM
Location:  Boone, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  710   Comments: 1
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/10/2002  Upload Date: 11/24/2005 3:06:29 PM
Location:  Boone, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  876   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/10/2002  Upload Date: 11/24/2005 3:06:30 PM
Location:  Boone, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  692   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/10/2002  Upload Date: 11/24/2005 3:06:30 PM
Location:  Boone, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  663   Comments: 1
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/10/2002  Upload Date: 11/24/2005 3:06:31 PM
Location:  Boone, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  691   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/10/2002  Upload Date: 8/17/2723 3:06:32 PM
Location:  Boone, IA
Author:  Matt Carlson
Categories:  InCab,Yard
Locomotives:  UP 3985(4-6-6-4)
Views:  864   Comments: 3
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/10/2002  Upload Date: 11/24/2005 3:06:37 PM
Location:  Denison, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  666   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/10/2002  Upload Date: 11/24/2005 3:06:38 PM
Location:  Denison, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  723   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/10/2002  Upload Date: 11/24/2005 3:06:39 PM
Location:  Denison, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  597   Comments: 1
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/10/2002  Upload Date: 11/24/2005 3:06:39 PM
Location:  Denison, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  701   Comments: 0
UP 3985
Title:  UP 3985
Description:  In the summer of 2002, UP hosted a number of excursions out of Chicago to Butler. Here we see the Challenger on the trestle over the CP mainline and Watertown-Plank Rd.
Photo Date:  6/10/2002  Upload Date: 1/19/2005 9:50:35 PM
Location:  Wauwatosa, WI
Author:  Brian Connolly
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  987   Comments: 1
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/11/2002  Upload Date: 11/24/2005 3:06:24 PM
Location:  Bertram, IA
Author:  Matt Carl
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  500   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/11/2002  Upload Date: 11/24/2005 3:06:24 PM
Location:  Bertram, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  530   Comments: 2
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/11/2002  Upload Date: 11/24/2005 3:06:33 PM
Location:  Aiken, ID
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  796   Comments: 3
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/11/2002  Upload Date: 11/24/2005 3:06:40 PM
Location:  Le Grand, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  589   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/11/2002  Upload Date: 11/24/2005 3:06:42 PM
Location:  Le Grand, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  585   Comments: 2
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/11/2002  Upload Date: 11/24/2005 3:06:42 PM
Location:  Tama, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  544   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/11/2002  Upload Date: 11/24/2005 3:06:43 PM
Location:  Tama, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  499   Comments: 0
UP 3:85
Title:  UP 3:85
Description: 
Photo Date:  6/11/2002  Upload Date: 11/24/2005 3:06:28 PM
Location:  Tama, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  533   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/12/2002  Upload Date: 11/24/2005 3:06:35 PM
Location:  Clinton, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  629   Comments: 3
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/12/2002  Upload Date: 11/24/2005 3:06:35 PM
Location:  Clinton, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  478   Comments: 0
UP 3981
Title:  UP 3981
Description: 
Photo Date:  6/12/2002  Upload Date: 11/24/2005 3:06:36 PM
Location:  Clinton, IA
Author:  Matt Carlson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  426   Comments: 0
UP 3985
Title:  UP 3985
Description:  West through the suburbs.
Photo Date:  6/15/2002  Upload Date: 11/26/2004 8:18:00 PM
Location:  Wheaton, IL
Author:  Todd Morgan
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  1113   Comments: 1
UP Challenger 3985 stops
Title:  UP Challenger 3985 stops
Description: 
Photo Date:  6/16/2002  Upload Date: 2/6/2004 11:39:08 PM
Location:  West Chicago, IL
Author:  Davie Hallman
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  995   Comments: 3
UP 3985 pulls an excursion
Title:  UP 3985 pulls an excursion
Description: 
Photo Date:  6/16/2002  Upload Date: 2/6/2004 11:39:08 PM
Location:  West Chicago, IL
Author:  David Hallman
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  1177   Comments: 0
UP Challenger 3985 gets moving on it's way to WisconsiT
Title:  UP Challenger 3985 gets moving on it's way to WisconsiT
Description: 
Photo Date:  6/16/2002  Upload Date: 2/6/2004 11:39:08 PM
Location:  West Chicago, IL
Author:  David Hallman
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  759   Comments: 0
UP 3985
Title:  UP 3985
Description:  Putting on a good show on her way to Milwaukee.
Photo Date:  6/16/2002  Upload Date: 11/26/2004 8:21:57 PM
Location:  Des Plaines, IL
Author:  Todd Morgan
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  630   Comments: 0
UP 3985
Title:  UP 3985
Description:  Luckily that coal train in the distance cleared in time!
Photo Date:  6/16/2002  Upload Date: 11/26/2004 8:24:40 PM
Location:  Winfield, IL
Author:  Todd Morgan
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  631   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  6/17/2002  Upload Date: 5/15/2009 3:38:10 AM
Location:  Nelson, IL
Author:  Larry Gholson
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  568   Comments: 0
3985 "Challenger"
Title:  3985 "Challenger"
Description:  The special Union Pacific steam train is seen departing West Chicago, Illinois, June 18, 2002 heading west. It is headed to Saint Paul, Minnesota to be displayed later. At this time the 4-6-6-4 “Challenger” steam locomotive, #3985, is the largest operating in the world. There are two sets of driving wheels and the frame is “articulated.” This way the wheels turn separately of the main frame to operate better where the track has tight turns. This engine was built in 1943. UP retired it from regular service in 1957. It was restored to operation once again in 1981 for use on special trips by UP. They converted it to run with oil instead of coal in 1990. UP ordered 105 “Challenger” locomotives between 1936 and 1943. They are about 122 feet long and weigh more than 1 million pounds. 3985 is the only one in operation of the two remaining. That is me (RLJ II) on the left videotaping at age 18. (Canon 35mm S.L.R. camera, Kodak Gold 800 print film)
Photo Date:  6/18/2002  Upload Date: 5/8/2019 8:54:52 AM
Location:  West Chicago, IL
Author:  Robert Jackson (father)
Categories:  Steam,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  821   Comments: 2
UP "Challenger" #3985 at West Chicago
Title:  UP "Challenger" #3985 at West Chicago
Description:  The special Union Pacific steam train is seen departing West Chicago, Illinois, June 18, 2002 heading west. It is headed to Saint Paul, Minnesota to be displayed later. At this time the 4-6-6-4 “Challenger” steam locomotive, #3985, is the largest operating in the world. There are two sets of driving wheels and the frame is “articulated.” This way the wheels turn separately of the main frame to operate better where the track has tight turns. This engine was built in 1943. UP retired it from regular service in 1957. It was restored to operation once again in 1981 for use on special trips by UP. They converted it to run with oil instead of coal in 1990. UP ordered 105 “Challenger” locomotives between 1936 and 1943. They are about 122 feet long and weigh more than 1 million pounds. 3985 is the only one in operation of the two remaining. (Canon 35mm S.L.R. camera, Kodak Gold 800 print film)
Photo Date:  6/18/2002  Upload Date: 5/8/2019 9:48:04 AM
Location:  West Chicago, IL
Author:  Robert Jackson (father)
Categories:  Station,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  1045   Comments: 2
UP "Challenger" #3985 steam engine!!!!
Title:  UP "Challenger" #3985 steam engine!!!!
Description:  The special Union Pacific steam train is seen departing West Chicago, Illinois, June 18, 2002 heading west. It is headed to Saint Paul, Minnesota to be displayed later. At this time the 4-6-6-4 “Challenger” steam locomotive, #3985, is the largest operating in the world. There are two sets of driving wheels and the frame is “articulated.” This way the wheels turn separately of the main frame to operate better where the track has tight turns. This engine was built in 1943. UP retired it from regular service in 1957. It was restored to operation once again in 1981 for use on special trips by UP. They converted it to run with oil instead of coal in 1990. UP ordered 105 “Challenger” locomotives between 1936 and 1943. They are about 122 feet long and weigh more than 1 million pounds. 3985 is the only one in operation of the two remaining. That is me (RLJ II) on the left videotaping at age 18. (Canon 35mm S.L.R. camera, Kodak Gold 800 print film)
Photo Date:  6/18/2002  Upload Date: 5/8/2019 8:51:08 AM
Location:  West Chicago, IL
Author:  Robert Jackson (father)
Categories:  Steam,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  727   Comments: 2
UP 3985
Title:  UP 3985
Description:  3985 heading south after a visit to St. Paul, MN
Photo Date:  6/20/2002  Upload Date: 6/24/2007 12:22:25 AM
Location:  Rosemount, MN
Author:  Rick Oswald
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  1122   Comments: 6

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