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1/11/2026
 
 
 
 
 
Owner: Union Pacific Railroad Company
Model:Alco 4-8-8-4Built As:UP 4023 (4-8-8-4)
Serial Number:72780Order No:S-1936
Frame Number:23¾X32 cylinders, 68" driversBuilt:11/1944
Notes:Kenefick Park, Omaha, NE
Other locos with this serial:  UP 4023(4-8-8-4)
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UP 4023
Title:  UP 4023
Description:  estimated date 1940 - 1950
Photo Date:  1/1/1945  Upload Date: 7/10/2022 5:02:39 PM
Location:  North Platte, NE
Author:  Richard Flebbe
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  831   Comments: 0
UP 4023
Title:  UP 4023
Description:  Big Boy 4023 has a full coal bunker as it loiters in the yard at Laramie. 4023 was built in 1944, and was one of the six Big Boys to operate in 1959, the only one of the 4884-2 series. 4023 would pull its last train over the Wasatch on July 20, 1959, arriving in Cheyenne with 56 loads and 12 empties at 10:35 PM. After retirement, the engine would be placed on display at the Omaha shops. When the shops closed in 1988, the engine was donated to the city of Omaha, who put it on display at Kenefick Park, where it resides today. Obtained from Union Pacific Steam: Big Boy Portraits (Bush, Ehernberger)
Photo Date:  7/1/1954  Upload Date: 7/17/2022 12:30:39 AM
Location:  Laramie, WY
Author:  Walter F.J. Krawiec
Categories:  Roster,Yard,Steam
Locomotives:  UP 4023(4-8-8-4)
Views:  300   Comments: 0
Moving Through The Yard
Title:  Moving Through The Yard
Description:  While moving near the engine terminal at Laramie, UP 4023 pauses for a signal. 4023 was the only member of the 4884-2 class to be preserved, the other 7 Big Boy survivors being from the earlier 4884-1 series. Obtained from Union Pacific Steam: Big Boy Portraits (Bush, Ehernberger)
Photo Date:  10/2/1954  Upload Date: 10/7/2022 12:00:22 AM
Location:  Laramie, WY
Author:  Stan Kistler
Categories:  Yard,Steam,Action
Locomotives:  UP 4023(4-8-8-4)
Views:  232   Comments: 0
Union Pacific 4-8-8-4 4023
Title:  Union Pacific 4-8-8-4 4023
Description:  Near the coaling tower at Cheyenne, 4-8-8-4 4023 simmers between runs. 4023 was built by ALCo in November 1944. It was retired in July 1962 and placed in storage at Cheyenne. In 1974, it was moved to Omaha and placed on display at the UP shops. In 1988, it was moved to Kenefick Park. In 2005, 4023 was moved to the new Kenefick Park.
Photo Date:  7/4/1957  Upload Date: 10/9/2023 8:11:39 PM
Location:  Cheyenne, WY
Author:  Timothy E. Kaufman
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  666   Comments: 0
Waiting For Servicing
Title:  Waiting For Servicing
Description:  Big Boy 4023 waits to enter the roundhouse at Cheyenne. In order to support the massive Big Boys, the turntable at Cheyenne was replaced with a 126 version. Even so, the Big Boy would still overhang by three feet on each end. Roundhouse stalls were also extended, and water columns were raised to accomadate the nearly 16 foot tall tenders. Obtained from Union Pacific Steam: Big Boy Portraits (Bush, Ehernberger)
Photo Date:  9/1/1957  Upload Date: 8/4/2022 12:33:53 AM
Location:  Cheyenne, WY
Author:  David Martindell
Categories:  Yard,Steam
Locomotives:  UP 4023(4-8-8-4)
Views:  267   Comments: 0
Passing Under The Signal Bridge
Title:  Passing Under The Signal Bridge
Description:  UP 4023 rolls under the west end signal bridge and into the yard at Cheyenne. The Colorado & Southern bridge over the UP tracks is visible in the background. These signals were controlled by Tower A, located on the other side of the bridge at the west end yard throat. Obtained from Union Pacific Steam: Big Boy Portraits (Bush, Ehernberger)
Photo Date:  9/15/1957  Upload Date: 7/19/2022 12:11:52 AM
Location:  Cheyenne, WY
Author:  David Martindell
Categories:  Steam,Signal,Action
Locomotives:  UP 4023(4-8-8-4)
Views:  222   Comments: 0
A Special Treat
Title:  A Special Treat
Description:  While everything was being serviced and readied for the day's excursion, UP brought out stored 4-8-8-4 4023 for the convention goers at Cheyenne.
Photo Date:  9/1/1963  Upload Date: 4/20/2025 11:44:37 PM
Location:  Cheyenne, WY
Author:  Douglas Wornom
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  409   Comments: 0
1019-20 Big Boy UP 4023 "Under Steam" (Shop steam)
Title:  1019-20 Big Boy UP 4023 "Under Steam" (Shop steam)
Description: 
Photo Date:  10/1/1976  Upload Date: 1/6/2010 3:51:30 AM
Location:  Omaha, NE
Author:  John Hill
Categories:  Roster,Yard,Steam,Track
Locomotives:  UP 4023(4-8-8-4)
Views:  4240   Comments: 0
1019-21 Big Boy UP 4023 "Under Steam" (Shop steam)
Title:  1019-21 Big Boy UP 4023 "Under Steam" (Shop steam)
Description:  Turntable
Photo Date:  10/1/1976  Upload Date: 1/6/2010 3:51:54 AM
Location:  Omaha, NE
Author:  John Hill
Categories:  Roster,Yard,Steam,Track
Locomotives:  UP 4023(4-8-8-4) UP 235(GP9) UP 482(GP20) UP 5003(U50C)
Views:  5629   Comments: 1
1019-21a Big Boy UP 4023 "Under Steam" (Shop steam)
Title:  1019-21a Big Boy UP 4023 "Under Steam" (Shop steam)
Description:  Cropped copy of 1019-21.
Photo Date:  10/1/1976  Upload Date: 1/6/2010 3:52:35 AM
Location:  Omaha, NE
Author:  John Hill
Categories:  Roster,Yard,Steam,Track
Locomotives:  UP 4023(4-8-8-4)
Views:  6573   Comments: 0
1019-23 Big Boy UP 4023 "Under Steam" (Shop steam)
Title:  1019-23 Big Boy UP 4023 "Under Steam" (Shop steam)
Description: 
Photo Date:  10/1/1976  Upload Date: 1/6/2010 3:54:00 AM
Location:  Omaha, NE
Author:  John Hill
Categories:  Roster,Yard,Steam,Track
Locomotives:  UP 4023(4-8-8-4) UP 235(GP9) UP 482(GP20) UP 5003(U50C)
Views:  4415   Comments: 1
UP 4023
Title:  UP 4023
Description:  estimated date 1975 - 1985
Photo Date:  1/1/1980  Upload Date: 7/4/2022 5:32:52 PM
Location:  Omaha, NE
Author:  Richard Flebbe
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  631   Comments: 0
UP 4023 AT UP HQ OMAHA
Title:  UP 4023 AT UP HQ OMAHA
Description:  UP BIG BOY N DISPLAY AT THE U.P. HEADQUARTERS IN OMAHA NE, NOTICE 6900 SERIES CENTENIAL IN BACKGROUND
Photo Date:  8/18/1989  Upload Date: 3/29/2011 11:20:24 AM
Location:  North Platte, NE
Author:  Gregory Garbacz
Categories:  Roster,Scenic,Station,Steam
Locomotives:  UP 4023(4-8-8-4)
Views:  3556   Comments: 0
Hig Boy on Dispay at Sunset
Title:  Hig Boy on Dispay at Sunset
Description:  Has she been moved?
Photo Date:  7/3/1991  Upload Date: 12/25/2007 2:40:05 AM
Location:  Omaha, NE
Author:  Marty Bernard
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  2395   Comments: 0
"Big-Boy" UP 4023, 4-8-8-4 ALCO Steam Locomotive
Title:  "Big-Boy" UP 4023, 4-8-8-4 ALCO Steam Locomotive
Description:  Union Pacific's "Big-Boy" Steam Locomotive, UP 4023, is being readied for a move across town to a new display at the Botanical Gardens near I-80 in Omaha Nebraska.
Photo Date:  2/25/2005  Upload Date: 3/2/2005 10:59:41 PM
Location:  Omaha, NE
Author:  Paul Rome
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  3422   Comments: 0
"Big-Boy" UP4023, 4-8-8-4 ALCO Steam Locomotive
Title:  "Big-Boy" UP4023, 4-8-8-4 ALCO Steam Locomotive
Description:  Union Pacific's "Big-Boy" Steam Locomotive, UP 4023, is being readied for a move across town to a new display at the Botanical Gardens near I-80 in Omaha Nebraska.
Photo Date:  2/25/2005  Upload Date: 3/2/2005 11:32:27 PM
Location:  Omaha, NE
Author:  Paul Rome
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  3379   Comments: 0
"Big-Boy" UP 4023, 4-8-8-4 ALCO Steam Locomotive
Title:  "Big-Boy" UP 4023, 4-8-8-4 ALCO Steam Locomotive
Description:  Union Pacific's "Big-Boy" Steam Locomotive, UP 4023, is being readied for a move across town to a new display at the Botanical Gardens near I-80 in Omaha Nebraska.
Photo Date:  2/25/2005  Upload Date: 3/2/2005 11:13:22 PM
Location:  Omaha, NE
Author:  Paul Rome
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  2881   Comments: 0
"Big-Boy" UP4023, 4-8-8-4 ALCO Steam Locomotive
Title:  "Big-Boy" UP4023, 4-8-8-4 ALCO Steam Locomotive
Description:  Union Pacific's "Big-Boy" Steam Locomotive, UP 4023, is being readied for a move across town to a new display at the Botanical Gardens near I-80 in Omaha Nebraska.
Photo Date:  2/25/2005  Upload Date: 3/3/2005 12:48:25 AM
Location:  Omaha, NE
Author:  Paul Rome
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  2730   Comments: 1
"Big-Boy" UP 4023, 4-8-8-4 ALCO Steam Locomotive
Title:  "Big-Boy" UP 4023, 4-8-8-4 ALCO Steam Locomotive
Description:  Union Pacific's "Big-Boy" Steam Locomotive, UP 4023, is being readied for a move across town to a new display at the Botanical Gardens near I-80 in Omaha Nebraska.
Photo Date:  2/25/2005  Upload Date: 3/3/2005 12:55:55 AM
Location:  Omaha, NE
Author:  Paul Rome
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  2828   Comments: 0
"Big-Boy" UP 4023, 4-8-8-4 ALCO Steam Locomotive
Title:  "Big-Boy" UP 4023, 4-8-8-4 ALCO Steam Locomotive
Description:  Union Pacific's "Big-Boy" Steam Locomotive, UP 4023, is being readied for a move across town to a new display at the Botanical Gardens near I-80 in Omaha Nebraska.
Photo Date:  2/25/2005  Upload Date: 3/3/2005 1:01:40 AM
Location:  Omaha, NE
Author:  Paul Rome
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  4496   Comments: 0
"Big-Boy" UP 4023, 4-8-8-4 ALCO Steam Locomotive
Title:  "Big-Boy" UP 4023, 4-8-8-4 ALCO Steam Locomotive
Description:  Union Pacific's "Big-Boy" Steam Locomotive, UP 4023, is being readied for a move across town to a new display at the Botanical Gardens near I-80 in Omaha Nebraska.
Photo Date:  2/25/2005  Upload Date: 3/2/2005 11:23:09 PM
Location:  Omaha, NE
Author:  Paul Rome
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  2438   Comments: 0
"Big-Boy" UP 4023, 4-8-8-4 ALCO Steam Locomotive
Title:  "Big-Boy" UP 4023, 4-8-8-4 ALCO Steam Locomotive
Description:  Union Pacific's "Big-Boy" Steam Locomotive, UP 4023, is being readied for a move across town to a new display at the Botanical Gardens near I-80 in Omaha Nebraska.
Photo Date:  2/25/2005  Upload Date: 3/3/2005 1:08:13 AM
Location:  Omaha, NE
Author:  Paul Rome
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  5573   Comments: 0
Big-Boy UP 4023 front
Title:  Big-Boy UP 4023 front
Description:  UP 4023 Big-Boy Steam Locomotive, 4-8-8-4 is being readied for it's move across town to the Botanical Gardens near I-80.
Photo Date:  2/25/2005  Upload Date: 3/3/2005 4:43:17 PM
Location:  Omaha, NE
Author:  Paul Rome
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  3185   Comments: 1
Big-Boy UP 4023 right side 1
Title:  Big-Boy UP 4023 right side 1
Description:  UP 4023 Big-Boy getting dollies placed under it for movement across town to the Botanical Gardens near I-80.
Photo Date:  3/3/2005  Upload Date: 3/3/2005 4:25:48 PM
Location:  Omaha, NE
Author:  Paul Rome
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  2735   Comments: 0
Big-Boy UP 4023 front
Title:  Big-Boy UP 4023 front
Description:  UP 4023 Big-Boy Steam Locomotive, 4-8-8-4 is being readied for it's move across town to the Botanical Gardens near I-80.
Photo Date:  3/3/2005  Upload Date: 3/3/2005 4:39:05 PM
Location:  Omaha, NE
Author:  Paul Rome
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  1831   Comments: 0
What A Sight!
Title:  What A Sight!
Description:  Per the guys doing this you're looking at a little over 500,000lbs moving.
Photo Date:  3/12/2005  Upload Date: 3/12/2005 5:42:32 PM
Location:  Omaha, NE
Author:  Rick C
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  18812   Comments: 3
What's That down the street?
Title:  What's That down the street?
Description:  Parked the car and almost ready to walk down.
Photo Date:  3/12/2005  Upload Date: 3/12/2005 5:42:32 PM
Location:  Omaha, NE
Author:  Rick C
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  7590   Comments: 0
Where's the Tender Truck?
Title:  Where's the Tender Truck?
Description:  They removed the front truck from the tender of 4023. Not sure why? I think it was for support reasons.
Photo Date:  3/12/2005  Upload Date: 3/12/2005 5:42:32 PM
Location:  Omaha, NE
Author:  Rick C
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  6171   Comments: 0
Last Pic
Title:  Last Pic
Description:  The wheel loader was there to push if needed. Big Boy 4023 is heading to her new home!
Photo Date:  3/12/2005  Upload Date: 3/12/2005 5:42:32 PM
Location:  Omaha, NE
Author:  Rick C
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  5751   Comments: 0
View from the Rear
Title:  View from the Rear
Description:  Moving down the street here's a view of a Big Boy without it's tender
Photo Date:  3/12/2005  Upload Date: 3/12/2005 5:42:32 PM
Location:  Omaha, NE
Author:  Rick C
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  12493   Comments: 1
Checking the Load
Title:  Checking the Load
Description:  The crew looks over 4023 before moving forward again
Photo Date:  3/12/2005  Upload Date: 3/12/2005 5:42:32 PM
Location:  Omaha, NE
Author:  Rick C
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  9244   Comments: 0
Engine
Title:  Engine
Description:  This is the engine driving the 4023 forward. Hydralic jacks
Photo Date:  3/12/2005  Upload Date: 3/12/2005 5:42:32 PM
Location:  Omaha, NE
Author:  Rick C
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  7237   Comments: 0
Some Detail
Title:  Some Detail
Description:  Cylinder and a driver showing
Photo Date:  3/12/2005  Upload Date: 3/12/2005 5:42:32 PM
Location:  Omaha, NE
Author:  Rick C
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  5241   Comments: 0
Real Work Being Done
Title:  Real Work Being Done
Description:  With Respect to all Kenworth owners, you need to have a MACK to do this! 4023's tender
Photo Date:  3/12/2005  Upload Date: 3/12/2005 5:42:32 PM
Location:  Omaha, NE
Author:  Rick C
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  8044   Comments: 1
The Crowds Parted
Title:  The Crowds Parted
Description:  This is the first close shot I got. Lots of people here watching. The Crew is checking over the rig before moving on.
Photo Date:  3/12/2005  Upload Date: 3/12/2005 5:42:32 PM
Location:  Omaha, NE
Author:  Rick C
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  18330   Comments: 0
Not a Train
Title:  Not a Train
Description:  But moving one's tender. Thanks for the great show!
Photo Date:  3/12/2005  Upload Date: 3/12/2005 5:42:32 PM
Location:  Omaha, NE
Author:  Rick C
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  4324   Comments: 2
Tender details
Title:  Tender details
Description:  You can see the drawbar and the stoker for the Big Boy.
Photo Date:  3/12/2005  Upload Date: 3/12/2005 5:42:32 PM
Location:  Omaha, NE
Author:  Rick C
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  5161   Comments: 3
UP's 'Big-Boy' on Bancroft Street
Title:  UP's 'Big-Boy' on Bancroft Street
Description:  UP's "Big-Boy" is being moved to it's new home at the new Kennefick Park in Omaha.
Photo Date:  3/12/2005  Upload Date: 4/19/2005 12:42:52 PM
Location:  Omaha, NE
Author:  Paul Rome
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  41936   Comments: 1
UP's 'Big-Boy' Steam Locomotive
Title:  UP's 'Big-Boy' Steam Locomotive
Description:  UP's "Big-Boy" Steam Locomotive fills Bancroft Street in Omaha, and drawfs a full size tractor-trailer rig!
Photo Date:  3/12/2005  Upload Date: 4/19/2005 12:42:18 PM
Location:  Omaha, NE
Author:  Paul Rome
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  8544   Comments: 0
Display under construction
Title:  Display under construction
Description:  A shot of Kennefick park from the only place the engines can be seen- I-80.
Photo Date:  9/4/2005  Upload Date: 9/9/2005 7:03:48 PM
Location:  Omaha, NE
Author:  Brian Hanel
Categories: 
Locomotives:  UP 6900(DDA40X) UP 4023(4-8-8-4)
Views:  3389   Comments: 0
UP 4023
Title:  UP 4023
Description: 
Photo Date:  3/22/2006  Upload Date: 5/3/2006 10:48:20 AM
Location:  Omaha, NE
Author:  Dennis and Rebekah Headings
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  2268   Comments: 0
UP 4023
Title:  UP 4023
Description: 
Photo Date:  6/1/2006  Upload Date: 6/4/2006 3:58:48 PM
Location:  Omaha, NE
Author:  Tom Stolte
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  1952   Comments: 0
UP 4023
Title:  UP 4023
Description: 
Photo Date:  6/1/2006  Upload Date: 6/4/2006 3:58:49 PM
Location:  Omaha, NE
Author:  Tom Stolte
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  2293   Comments: 2
UP 4023
Title:  UP 4023
Description: 
Photo Date:  6/1/2006  Upload Date: 6/4/2006 3:58:49 PM
Location:  Omaha, NE
Author:  Tom Stolte
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  2499   Comments: 0
UP 4023
Title:  UP 4023
Description: 
Photo Date:  6/1/2006  Upload Date: 6/4/2006 3:58:50 PM
Location:  Omaha, NE
Author:  Tom Stolte
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  2063   Comments: 0
Big Boy Loco
Title:  Big Boy Loco
Description:  What a masterpiece! Even with the wide angle, there was no way to get a broadside shot if this monster!
Photo Date:  6/4/2006  Upload Date: 6/17/2006 10:53:55 PM
Location:  Omaha, NE
Author:  Brian Hill
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  1663   Comments: 0
Big Boy Details
Title:  Big Boy Details
Description:  Close up of front end hardware on this beautiful locomotive
Photo Date:  6/4/2006  Upload Date: 6/17/2006 11:00:29 PM
Location:  Omaha, NE
Author:  Brian Hill
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  1472   Comments: 1
Welcome To Omaha
Title:  Welcome To Omaha
Description:  Big Boy at Kennefick Park as seen from I-80W.
Photo Date:  6/4/2006  Upload Date: 6/17/2006 11:33:53 PM
Location:  Omaha, NE
Author:  JD
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  1784   Comments: 0
Two Big Boys!
Title:  Two Big Boys!
Description:  Yours truly in front of UP Pride!
Photo Date:  6/4/2006  Upload Date: 6/17/2006 11:10:53 PM
Location:  Omaha, NE
Author:  JD
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  1501   Comments: 0
UP 4023 (Big Boy) Manufacturer's Plate
Title:  UP 4023 (Big Boy) Manufacturer's Plate
Description: 
Photo Date:  8/14/2006  Upload Date: 8/14/2006 3:30:57 PM
Location:  Omaha, NE
Author:  Robert Garton
Categories: 
Locomotives:  UP 4023(4-8-8-4)
Views:  1926   Comments: 0


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