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6/13/2025
 
 
 
 
 
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 Train SCYDV
Title:  UP Train SCYDV
Description: 
Photo Date:  9/28/2010  Upload Date: 10/4/2010 10:11:47 PM
Location:  Platteville, CO
Author:  Terry Lovell
Categories:  Action
Locomotives:  UP 3985(4-6-6-4)
Views:  461   Comments: 4
UP Train SCYDV
Title:  UP Train SCYDV
Description: 
Photo Date:  9/28/2010  Upload Date: 10/4/2010 10:12:12 PM
Location:  Platteville, CO
Author:  Terry Lovell
Categories:  Action
Locomotives:  UP 3985(4-6-6-4)
Views:  469   Comments: 0
UP Train SCYDV
Title:  UP Train SCYDV
Description: 
Photo Date:  9/28/2010  Upload Date: 10/9/2010 2:25:56 PM
Location:  Platteville, CO
Author:  Terry Lovell
Categories:  Steam,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  460   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/28/2010  Upload Date: 9/28/2010 11:58:26 AM
Location:  Carr, CO
Author:  Joe Hill
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  344   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/28/2010  Upload Date: 9/28/2010 11:57:58 AM
Location:  Greeley, CO
Author:  Joe Hill
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  351   Comments: 1
Smoking it up!
Title:  Smoking it up!
Description:  The big Challenger starts up again after a 10 minute service stop at Greeley, CO with the Ringling Circus Train in tow.
Photo Date:  9/28/2010  Upload Date: 9/28/2010 11:56:45 AM
Location:  Greeley, CO
Author:  Joe Hill
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  492   Comments: 3
UP 3985
Title:  UP 3985
Description:  The Challenger pulls the Ringling Brothers Circus train north of Nunn.
Photo Date:  9/28/2010  Upload Date: 9/15/2016 7:52:28 PM
Location:  Nunn, CO
Author:  Richard Kundert
Categories:  Steam,Passenger,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  251   Comments: 65537
Circus Train Steam History
Title:  Circus Train Steam History
Description:  The UP uses the 4-6-6-4 Challenger No. 3985 to pull the Ringling Bros and Barnum and Bailey Circus train from Speer, WY to Denver, CO. There were way too many morons out on the road. Makes me wish I had a shotgun.
Photo Date:  9/28/2010  Upload Date: 10/13/2010 12:05:26 PM
Location:  Speer, WY
Author:  amtrakswchief 4
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  711   Comments: 2
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/29/2010  Upload Date: 10/10/2010 4:53:39 PM
Location:  Cheyenne, WY
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  283   Comments: 0
UP 3985 At Night
Title:  UP 3985 At Night
Description: 
Photo Date:  9/29/2010  Upload Date: 10/10/2010 4:53:40 PM
Location:  Cheyenne, WY
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  290   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/29/2010  Upload Date: 10/10/2010 4:53:41 PM
Location:  Cheyenne, WY
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  275   Comments: 0
UP 3985 waiting
Title:  UP 3985 waiting
Description: 
Photo Date:  9/29/2010  Upload Date: 12/11/2010 7:10:58 PM
Location:  Carr, CO
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  350   Comments: 0
UP 3985 & UP 3202 waiting to come into the yard
Title:  UP 3985 & UP 3202 waiting to come into the yard
Description: 
Photo Date:  9/29/2010  Upload Date: 12/11/2010 7:12:59 PM
Location:  Cheyenne, WY
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4) UP 3202(SD40-2) UP 3201(SD40-2)
Views:  671   Comments: 0
UP 3985 switching around the yard
Title:  UP 3985 switching around the yard
Description: 
Photo Date:  9/29/2010  Upload Date: 12/11/2010 7:17:05 PM
Location:  Cheyenne, WY
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4) UP 96(SW10)
Views:  993   Comments: 0
UP 3985
Title:  UP 3985
Description:  It's easy to see why this is a favorite shot of trains headed east from Cheyenne...it doesn't get any better.
Photo Date:  9/30/2010  Upload Date: 10/20/2010 8:07:43 PM
Location:  Archer, WY
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  325   Comments: 2
UP 3985
Title:  UP 3985
Description:  Missouri Eagle headed east.
Photo Date:  9/30/2010  Upload Date: 10/10/2010 4:53:44 PM
Location:  Archer, WY
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  598   Comments: 9
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/30/2010  Upload Date: 10/10/2010 4:53:45 PM
Location:  Dix, NE
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  284   Comments: 0
UP 3985
Title:  UP 3985
Description:  The parting shot of the chase, which was pretty wicked & took me farther west than I'd planned! The train has just made a dip back into Colorado here, making a pit stop in the speed trap town of Julesburg.
Photo Date:  9/30/2010  Upload Date: 10/20/2010 8:45:18 PM
Location:  Big Springs, NE
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  227   Comments: 1
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/30/2010  Upload Date: 10/10/2010 4:53:46 PM
Location:  Lodgepole, NE
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  257   Comments: 2
Chevy-Challenger-Cheyenne
Title:  Chevy-Challenger-Cheyenne
Description:  Davy Vs Goliath. 360 Meets 4-6-6-4. Impala Against Alco. However you wanna word it, this Cheyenne-Chevy-Challenger moment comes just after sunrise on the first day of the Missouri River Eagle tour. The ultimate "Coke can" photo moment, to give you an idea how big it really is.
Photo Date:  9/30/2010  Upload Date: 10/20/2010 9:07:19 PM
Location:  Cheyenne, WY
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  637   Comments: 5
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/30/2010  Upload Date: 10/10/2010 4:53:47 PM
Location:  Sidney, NE
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  222   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/30/2010  Upload Date: 10/10/2010 4:53:48 PM
Location:  Cheyenne, WY
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  197   Comments: 2
UP 3985
Title:  UP 3985
Description:  The speed at which 3985 was running made it easy for you to go hundreds of miles without knowing it!
Photo Date:  9/30/2010  Upload Date: 10/20/2010 8:41:04 PM
Location:  Chappell, NE
Author:  Kevin Andrusia
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  280   Comments: 1
UP 3985 at sunrise
Title:  UP 3985 at sunrise
Description:  I can't think of any better way to start my birthday than to follow a Union Pacific steam train
Photo Date:  9/30/2010  Upload Date: 12/11/2010 7:28:03 PM
Location:  Cheyenne, WY
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  520   Comments: 3
UP 3985 ready for the Missouri River Eagle Tour
Title:  UP 3985 ready for the Missouri River Eagle Tour
Description: 
Photo Date:  9/30/2010  Upload Date: 12/11/2010 8:28:44 PM
Location:  Cheyenne, WY
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  363   Comments: 0
UP 3985 climbing Archer Hill
Title:  UP 3985 climbing Archer Hill
Description: 
Photo Date:  9/30/2010  Upload Date: 12/11/2010 8:40:25 PM
Location:  Archer, WY
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  388   Comments: 0
UP 3985 near the WY & NE border
Title:  UP 3985 near the WY & NE border
Description: 
Photo Date:  9/30/2010  Upload Date: 12/11/2010 8:44:08 PM
Location:  Pine Bluffs, WY
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  354   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  9/30/2010  Upload Date: 12/11/2010 9:07:05 PM
Location:  Point of Rocks, NE
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  346   Comments: 1
UP 3985 getting serviced
Title:  UP 3985 getting serviced
Description: 
Photo Date:  9/30/2010  Upload Date: 12/11/2010 9:14:57 PM
Location:  Lodgepole, NE
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  296   Comments: 0
UP 3985 speeding between the FEC Silo's
Title:  UP 3985 speeding between the FEC Silo's
Description: 
Photo Date:  9/30/2010  Upload Date: 12/11/2010 9:17:26 PM
Location:  Chappell, NE
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  307   Comments: 1
UP 3985 from the Golden Spike Tower
Title:  UP 3985 from the Golden Spike Tower
Description: 
Photo Date:  9/30/2010  Upload Date: 12/11/2010 9:22:54 PM
Location:  North Platte, NE
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4) UPY 801(SD38-2) UP 3361(SD40-2) UP 3673(SD40-2) UPY 809(SD38-2)
Views:  1194   Comments: 0
UP 3985 departing just after sunrise
Title:  UP 3985 departing just after sunrise
Description: 
Photo Date:  10/1/2010  Upload Date: 12/11/2010 9:27:55 PM
Location:  North Platte, NE
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  373   Comments: 1
UP 3985 one last picture for me zooming in across the river
Title:  UP 3985 one last picture for me zooming in across the river
Description: 
Photo Date:  10/1/2010  Upload Date: 12/11/2010 9:42:52 PM
Location:  North Platte, NE
Author:  Kerry Klarr
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  253   Comments: 2
Coming into Station
Title:  Coming into Station
Description:  UP 3985 coming into Marysville, Kansas
Photo Date:  10/1/2010  Upload Date: 10/6/2010 9:15:05 AM
Location:  Marysville, KS
Author:  Greg Elder
Categories:  Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  323   Comments: 0
Service stop
Title:  Service stop
Description:  UP 3985 stopped at Marysville, Kansas for fuel, water, and service. The crew is applying grease to the drive wheels with a steam powered grease gun.
Photo Date:  10/1/2010  Upload Date: 10/6/2010 9:18:07 AM
Location:  Marysville, KS
Author:  Greg Elder
Categories:  Station,Steam
Locomotives:  UP 3985(4-6-6-4)
Views:  333   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  10/1/2010  Upload Date: 10/3/2010 6:22:29 PM
Location:  Archer Hill, WY
Author:  Sean Rodkey
Categories:  Steam,Passenger,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  373   Comments: 1
UP 3985
Title:  UP 3985
Description: 
Photo Date:  10/1/2010  Upload Date: 10/3/2010 6:25:08 PM
Location:  Bushnell, NE
Author:  Sean Rodkey
Categories:  Steam,Passenger,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  246   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  10/1/2010  Upload Date: 10/3/2010 6:27:01 PM
Location:  Sunol, NE
Author:  Sean Rodkey
Categories:  Steam,Passenger,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  226   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  10/1/2010  Upload Date: 10/3/2010 6:34:02 PM
Location:  Lodgepole, NE
Author:  Sean Rodkey
Categories:  Steam,Passenger
Locomotives:  UP 3985(4-6-6-4)
Views:  459   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  10/1/2010  Upload Date: 10/3/2010 6:35:13 PM
Location:  Lodgepole, NE
Author:  Sean Rodkey
Categories:  Steam,Passenger,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  225   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  10/1/2010  Upload Date: 10/3/2010 6:38:27 PM
Location:  Roscoe, NE
Author:  Sean Rodkey
Categories:  Steam,Passenger,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  248   Comments: 1
UP 3985
Title:  UP 3985
Description: 
Photo Date:  10/1/2010  Upload Date: 10/3/2010 6:40:28 PM
Location:  Roscoe, NE
Author:  Sean Rodkey
Categories:  Steam,Passenger
Locomotives:  UP 3985(4-6-6-4)
Views:  235   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  10/1/2010  Upload Date: 10/3/2010 6:41:36 PM
Location:  North Platte, NE
Author:  Sean Rodkey
Categories:  Steam,Passenger,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  244   Comments: 1
UP 3985
Title:  UP 3985
Description: 
Photo Date:  10/1/2010  Upload Date: 10/3/2010 6:43:41 PM
Location:  North Platte, NE
Author:  Sean Rodkey
Categories:  Steam,Passenger,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  318   Comments: 1
UP 3985
Title:  UP 3985
Description: 
Photo Date:  10/1/2010  Upload Date: 10/3/2010 6:45:17 PM
Location:  Brady, NE
Author:  Sean Rodkey
Categories:  Steam,Passenger,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  239   Comments: 0
UP 3985
Title:  UP 3985
Description: 
Photo Date:  10/1/2010  Upload Date: 10/3/2010 6:58:36 PM
Location:  Gibbon, NE
Author:  Sean Rodkey
Categories:  Steam,Passenger,Action
Locomotives:  UP 3985(4-6-6-4)
Views:  198   Comments: 0
UP 3985
Title:  UP 3985
Description:  3985 after passing through Delia.
Photo Date:  10/2/2010  Upload Date: 10/8/2010 10:43:10 AM
Location:  Delia, KS
Author:  David Banaka
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  383   Comments: 0
UP 3985
Title:  UP 3985
Description:  excursion train
Photo Date:  10/2/2010  Upload Date: 10/8/2010 10:43:41 AM
Location:  Delia, KS
Author:  David Banaka
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  373   Comments: 0
UP 3985
Title:  UP 3985
Description:  excursion train
Photo Date:  10/2/2010  Upload Date: 10/8/2010 10:44:11 AM
Location:  Delia, KS
Author:  David Banaka
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  410   Comments: 0
UP 3985
Title:  UP 3985
Description:  near Delia, Ks
Photo Date:  10/2/2010  Upload Date: 10/8/2010 10:45:21 AM
Location:  Delia, KS
Author:  David Banaka
Categories: 
Locomotives:  UP 3985(4-6-6-4)
Views:  466   Comments: 0


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