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1/1/2025
 
 
 
 
 
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
Title:  UP 3985
Description:  UP 3985
Photo Date:  10/18/1985  Upload Date: 5/14/2017 9:29:01 PM
Location:  Cheyenne, WY
Author:  J Fischer
Categories:  Roster,Night,Yard,Station,Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  1033   Comments: 0
UP 3985
Title:  UP 3985
Description:  UP 3985
Photo Date:  10/18/1985  Upload Date: 5/14/2017 9:29:34 PM
Location:  Cheyenne, WY
Author:  J Fischer
Categories:  Roster,Night,Yard,Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  1211   Comments: 1
UP 3985 Passenger Special
Title:  UP 3985 Passenger Special
Description: 
Photo Date:  10/1/1988  Upload Date: 5/28/2011 1:17:12 PM
Location:  Speer, WY
Author:  Paul DeLuca
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  1688   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  10/1/1988  Upload Date: 2/7/2006 11:40:28 AM
Location:  Laramie, WY
Author:  Jeff Van Cleve
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  2667   Comments: 1
Union Pacific Challenger in Forney Texas fall 1990
Title:  Union Pacific Challenger in Forney Texas fall 1990
Description:  Took this with a medium format Bronica in fall of 1990. Challenger had left Dallas and was on the way to Longview for the next overnight stop. Grabbed this along highway 80 out of Forney.
Photo Date:  9/1/1990  Upload Date: 7/23/2011 4:45:46 PM
Location:  Forney, TX
Author:  Jack Harris
Categories:  Steam,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  1948   Comments: 0
Union Pacific 4-6-6-4 3985
Title:  Union Pacific 4-6-6-4 3985
Description:  Taken during the early 1990s by an unknown photographer.
Photo Date:  1/1/1991  Upload Date: 12/5/2022 8:20:16 PM
Location:  Omaha, NE
Author:  Unknown
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  101   Comments: 0
UP Steam Special headed to Railfair 1991 - 844 - 3985 - 1243 on flat car
Title:  UP Steam Special headed to Railfair 1991 - 844 - 3985 - 1243 on flat car
Description:  UP Steam Special headed to Railfair 1991 - 844 - 3985 - 1243 on flat car
Photo Date:  1/1/1991  Upload Date: 3/7/2014 12:09:58 PM
Location:  Laramie, WY
Author:  Don Hinchliffe
Categories: 
Locomotives:  UP 8444(4-8-4) UP 3985(4-6-6-4) UP 1243(4-6-0)
Views:  2150   Comments: 0
3985 In Spring Tx
Title:  3985 In Spring Tx
Description:  UP 3985 in Houston in 1991 or 1992 I cannot remember the year it was in Houston We are at Spring Junction
Photo Date:  4/1/1991  Upload Date: 8/31/2011 10:15:46 PM
Location:  Spring, TX
Author:  Charles Gibbons
Categories:  Action
Locomotives:  UP 3985(4-6-6-4)
Views:  1257   Comments: 0
UP 3985 Smoking It Up
Title:  UP 3985 Smoking It Up
Description: 
Photo Date:  4/20/1991  Upload Date: 5/28/2011 5:59:53 PM
Location:  Cache Junction, UT
Author:  Tom Kidd
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  1457   Comments: 1
UP 3985 Buries a Photographer in Steam
Title:  UP 3985 Buries a Photographer in Steam
Description: 
Photo Date:  4/20/1991  Upload Date: 5/28/2011 5:59:23 PM
Location:  Cache Junction, UT
Author:  Tom Kidd
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  715   Comments: 0
UP 3985 at a Station Stop
Title:  UP 3985 at a Station Stop
Description: 
Photo Date:  4/20/1991  Upload Date: 5/28/2011 6:01:10 PM
Location:  Ogden, UT
Author:  Tom Kidd
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  1027   Comments: 0
UP 3985
Title:  UP 3985
Description:  The Challenger is southbound out of Wheelon, picking up speed after the 12mph speed restriction of Bear River Canyon
Photo Date:  4/21/1991  Upload Date: 6/22/2016 6:10:25 PM
Location:  Wheelon, UT
Author:  Richard Kundert
Categories:  Steam,Passenger,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  706   Comments: 1
UP 3985
Title:  UP 3985
Description: 
Photo Date:  5/4/1991  Upload Date: 9/24/2007 7:51:27 PM
Location:  Sacramento, CA
Author:  Philip Richard
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  968   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  5/4/1991  Upload Date: 9/24/2007 7:52:07 PM
Location:  Sacramento, CA
Author:  Philip Richard
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  1336   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  5/4/1991  Upload Date: 9/24/2007 7:52:30 PM
Location:  Sacramento, CA
Author:  Philip Richard
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  1308   Comments: 1
UP 3985
Title:  UP 3985
Description: 
Photo Date:  5/4/1991  Upload Date: 9/24/2007 7:51:46 PM
Location:  Sacramento, CA
Author:  Philip Richard
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  992   Comments: 0
UP 3985
Title:  UP 3985
Description:  ALCO 4-6-6-4
Photo Date:  5/4/1991  Upload Date: 12/17/2013 11:35:41 AM
Location:  Sacramento, CA
Author:  Doug Tilley
Categories:  Roster,Yard,Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  741   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  5/15/1991  Upload Date: 9/6/2007 8:05:59 PM
Location:  Stockton, CA
Author:  Philip Richard
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  1750   Comments: 1
UP 3985
Title:  UP 3985
Description: 
Photo Date:  5/15/1991  Upload Date: 9/6/2007 8:06:21 PM
Location:  Stockton, CA
Author:  Philip Richard
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  1072   Comments: 1
UP Doublehead from 1991 Sacramento Railfair
Title:  UP Doublehead from 1991 Sacramento Railfair
Description:  844/3985 in Echo Canyon under the signal bridge at MP 942.6
Photo Date:  5/18/1991  Upload Date: 4/18/2011 10:42:32 PM
Location:  Ogden, UT
Author:  Martin Matlack
Categories:  Scenic,Model,Steam,Signal,Passenger,Action
Locomotives:  UP 844(4-8-4) UP 3985(4-6-6-4)
Views:  2143   Comments: 2
Boy does that ladder look small!
Title:  Boy does that ladder look small!
Description:  UP Steam crew services Challenger #3985 in the doublehead lashp to Cheyenne. Water tender #857 for #844 is ahead.
Photo Date:  5/18/1991  Upload Date: 4/23/2011 9:08:29 PM
Location:  Evanston, WY
Author:  Martin Matlack
Categories:  Model,Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  1153   Comments: 0
Making Steam
Title:  Making Steam
Description:  UP 4-6-6-4 Challenger 3985 builds steam in the early morning at Rock Springs
Photo Date:  5/19/1991  Upload Date: 4/18/2011 10:46:36 PM
Location:  Rock Springs, WY
Author:  Martin Matlack
Categories:  Model,Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  919   Comments: 0
up 3985
Title:  up 3985
Description:  More Steam Action at Spring Texas. Spring Junction ( date Approx)
Photo Date:  6/1/1991  Upload Date: 8/31/2011 10:18:53 PM
Location:  Spring, TX
Author:  Charles Gibbons
Categories:  Steam,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  876   Comments: 0
UP #3985
Title:  UP #3985
Description:  Photo runby of a #3985-led passenger special on Altamont Pass. Scanned with an Epson V550 from a 35mm slide, brand is unknown. Exact date is approximate.
Photo Date:  7/1/1992  Upload Date: 8/7/2016 9:19:07 PM
Location:  Altamont, CA
Author:  J.A. Lee/Paul Frantz Collection
Categories:  Steam,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  829   Comments: 1
Climbing the Hill
Title:  Climbing the Hill
Description:  UP 4-6-6-4 Challenger 3985 pulls The Pacific Limited up Antelope Hill
Photo Date:  7/16/1992  Upload Date: 4/18/2011 10:51:55 PM
Location:  Winnemucca, NV
Author:  Martin Matlack
Categories:  Scenic,Model,Steam,Passenger,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  1157   Comments: 1
In the desert
Title:  In the desert
Description:  UP Challenger #3985 leads the Pacific Limited across Sand Pass towards Winnemucca
Photo Date:  7/16/1992  Upload Date: 4/18/2011 10:54:24 PM
Location:  Winnemucca, NV
Author:  Martin Matlack
Categories:  Scenic,Model,Steam,Passenger,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  1041   Comments: 0
UP 3985 on the viaduct
Title:  UP 3985 on the viaduct
Description:  Peter Ehrlich photo
Photo Date:  7/27/1992  Upload Date: 3/13/2024 5:22:36 PM
Location:  Clio, CA
Author:  Peter Ehrlich
Categories:  Bridge,Steam,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  45   Comments: 0
UP 3985
Title:  UP 3985
Description:  UP excursion train to Texas 1992
Photo Date:  8/1/1992  Upload Date: 5/19/2005 12:24:03 AM
Location:  Forney, TX
Author:  Mike Murray
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  3168   Comments: 5
UP 3985
Title:  UP 3985
Description: 
Photo Date:  11/7/1992  Upload Date: 10/15/2008 2:55:32 PM
Location:  Pleasant Hill, MO
Author:  Mary Rae McPherson
Categories:  Winter,Steam,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  1331   Comments: 5
UP 3985
Title:  UP 3985
Description: 
Photo Date:  11/7/1992  Upload Date: 10/15/2008 2:56:45 PM
Location:  Sullivan, MO
Author:  Mary Rae McPherson
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  802   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  11/7/1992  Upload Date: 10/15/2008 2:57:21 PM
Location:  Hermann, MO
Author:  Mary Rae McPherson
Categories:  Winter,Steam,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  692   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  11/7/1992  Upload Date: 10/15/2008 2:55:51 PM
Location:  Strasburg, MO
Author:  Mary Rae McPherson
Categories:  Winter,Steam,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  668   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  11/7/1992  Upload Date: 10/15/2008 2:56:26 PM
Location:  Jefferson City, MO
Author:  Mary Rae McPherson
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  736   Comments: 1
UP 3985
Title:  UP 3985
Description:  3985 departs Sedalia, Missouri, while pulling a Kansas City to St. Louis excursion. The locomotive was on its way east to handle the CSX Santa Claus train on the old Clinchfield.
Photo Date:  11/7/1992  Upload Date: 10/7/2009 9:52:36 AM
Location:  Sedalia, MO
Author:  Mary Rae McPherson
Categories:  Steam,Passenger,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  1308   Comments: 2
UP 3985
Title:  UP 3985
Description:  The Challenger running southbound on the former Missouri Pacific DeSoto Subdivision on it's way to pull the Clinchfield Santa train - Exact location unknown - Myron Dudenbostle photo
Photo Date:  11/8/1992  Upload Date: 11/1/2008 9:41:03 PM
Location:  De Soto, MO
Author:  Myron Dudenbostle
Categories:  Steam,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  1520   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  11/16/1992  Upload Date: 4/28/2006 11:40:28 AM
Location:  Latonia, KY
Author:  Bryan Oliver
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  1730   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  11/16/1992  Upload Date: 4/28/2006 11:40:48 AM
Location:  Covington, KY
Author:  Bryan Oliver
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  986   Comments: 4
UP 3985
Title:  UP 3985
Description: 
Photo Date:  11/16/1992  Upload Date: 4/28/2006 11:41:02 AM
Location:  Latonia, KY
Author:  Bryan Oliver
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  919   Comments: 0
CSX 8509 meets UP 3985 as CRR 676
Title:  CSX 8509 meets UP 3985 as CRR 676
Description: 
Photo Date:  11/19/1992  Upload Date: 4/19/2013 5:18:54 PM
Location:  Kingsport, TN
Author:  Johnny Winkler
Categories:  Steam
Locomotives:  CSX 8509(SD50) UP 3985(4-6-6-4)
Views:  4988   Comments: 0
CSX 8456 and UP 3985
Title:  CSX 8456 and UP 3985
Description: 
Photo Date:  11/19/1992  Upload Date: 4/25/2013 1:24:26 PM
Location:  Kingsport, TN
Author:  Johnny Winkler
Categories:  Steam
Locomotives:  CSX 8456(SD40-2) UP 3985(4-6-6-4)
Views:  1186   Comments: 0
UP 3985 as Clinchfield 676 is passed by a CSX GP40
Title:  UP 3985 as Clinchfield 676 is passed by a CSX GP40
Description: 
Photo Date:  11/19/1992  Upload Date: 2/17/2034 6:52:59 PM
Location:  Kingsport, TN
Author:  Johnny Winkler
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4) CSX 6805(GP40)
Views:  1082   Comments: 0
CSX 8456
Title:  CSX 8456
Description: 
Photo Date:  11/19/1992  Upload Date: 2/28/2013 2:33:59 PM
Location:  Kingsport, TN
Author:  Johnny Winkler
Categories:  Steam
Locomotives:  CSX 8456(SD40-2) UP 3985(4-6-6-4)
Views:  892   Comments: 0
UP 3985
Title:  UP 3985
Description:  This is between Jeff City and Kansas City that we were dropped off and they backed the train up and did a roll by for us. It was sweet!!
Photo Date:  12/4/1992  Upload Date: 9/5/2008 8:16:58 PM
Location:  Saint Louis, MO
Author:  Brian Vieck
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  475   Comments: 1
UP 3985
Title:  UP 3985
Description:  Getting shots of the train as it rolls by just outside of St. Louis.
Photo Date:  12/4/1992  Upload Date: 9/5/2008 8:14:39 PM
Location:  Saint Louis, MO
Author:  Brian Vieck
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  670   Comments: 0
UP 3985
Title:  UP 3985
Description:  Getting shots of the train as it rolls by just outside of St. Louis. Wish I'd had a better camera back then.
Photo Date:  12/4/1992  Upload Date: 9/5/2008 8:14:19 PM
Location:  Saint Louis, MO
Author:  Brian Vieck
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  467   Comments: 0
UP 3985
Title:  UP 3985
Description:  Getting shots of the train as it rolls by just outside of St. Louis. Man was it COLD!
Photo Date:  12/4/1992  Upload Date: 9/5/2008 8:15:11 PM
Location:  Saint Louis, MO
Author:  Brian Vieck
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  378   Comments: 0
UP 3985
Title:  UP 3985
Description:  UP 3985 roared through Herman at full track speed on her way home after masquerading as a Clinchfield loco for CSX's Santa train.
Photo Date:  1/1/1993  Upload Date: 12/6/2008 8:00:51 PM
Location:  Hermann, MO
Author:  Gary Dyhouse
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  1053   Comments: 2
UP 3985
Title:  UP 3985
Description:  Early morning finds the 3985 and train departing Vincennes, IN on its way back to St. Louis after masquerading as a Clinchfield engine for the CSX Santa Train. We just about froze to death getting this shot!
Photo Date:  1/1/1993  Upload Date: 6/14/2006 12:16:48 AM
Location:  Vincennes, IN
Author:  Gary Dyhouse
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  1200   Comments: 1
UP 3985
Title:  UP 3985
Description: 
Photo Date:  1/1/1993  Upload Date: 3/3/2006 10:49:36 AM
Location:  Gerlach, NV
Author:  chad thomas
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  991   Comments: 1
Challenger Revival
Title:  Challenger Revival
Description:  Steaming along with the 40th anniversary Rocky Mountain Railroad Club special, 4-6-6-4 3985 was disguised as 3967.
Photo Date:  5/15/1993  Upload Date: 10/12/2023 6:33:11 PM
Location:  unknown, CO
Author:  Dave Straight
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  44   Comments: 0


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