Road Number Model Order Serial Notes # Photos Date Added
UP 4000 Alco 4-8-8-4 69571 Prototype Schenectady 08/1941, retired 08/1961 28 5/4/2016
UP 4001 Alco 4-8-8-4 69572 Built Aug. 1941, scrapped Nov. 1961 11 5/12/2021
UP 4002 Alco 4-8-8-4 S-1844 69573 retired 11/61 13 8/12/2015
UP 4003 Alco 4-8-8-4 S-1844 69574 retired 2/62 20 6/21/2009
UP 4004 Alco 4-8-8-4 S-1844 69575 donated 06/1963 to Holliday Park, Cheyenne, WY 113 1/1/2000
UP 4005 Alco 4-8-8-4 S-1844 69576 donated 06/1970 to Forney Museum, Denver, CO 40 6/7/2009
UP 4006 Alco 4-8-8-4 S-1844 69577 donated 06/1961 to St Louis County Museum Of Transportation 105 1/1/2000
UP 4007 Alco 4-8-8-4 69578 4-8-8-4, Schenectady 08/41, retired 08/61 12 12/26/2020
UP 4008 Alco 4-8-8-4 69579 Schenectady 08/1941, scrapped August 7, 1962. 14 5/30/2021
UP 4009 Alco 4-8-8-4 S-1844 69580 Schenectady 08/1941, scrapped May 16, 1963. 10 8/12/2015
UP 4010 Alco 4-8-8-4 S-1844 69581 Schenectady 08/1941, scrapped May 24, 1963. (at Geneva, Utah) 13 8/12/2015
UP 4011 Alco 4-8-8-4 69582 Schenectady, 10/1941, retired 07/1962 12 2/12/2017
UP 4012 Alco 4-8-8-4 S-1717 69583 Schenectady 08/1941, retired 02/62, donated 08/64 to Steamtown 395 1/1/2000
UP X4012 Alco 4-8-8-4 1 4/2/2025
UP 4013 Alco 4-8-8-4 69584 Schenectady 08/1941, scrapped April 23, 1963 12 12/7/2017
UP 4014 Alco 4-8-8-4 S-1844 69585 Big Boy class, UP Steam Program. 1658 6/19/2009
UP X4014 Alco 4-8-8-4 1 11/16/2024
UP 4015 Alco 4-8-8-4 68586 Schenectady 09/1941, retired 08/1961 13 6/28/2013
UP 4016 Alco 4-8-8-4 69587 Schenectady 09/1941, scrapped March 9, 1962 7 6/4/2021
UP 4017 Alco 4-8-8-4 S-1844 69588 Schenectady 09/1941, donated to Natl. RR Museum, Green Bay 5/61 127 1/1/2000
UP 4018 Alco 4-8-8-4 S-1844 69589 Schenectady 1941, donated to Texas State Fairgrounds (Dallas) July 9, 1962. 76 1/1/2000
UP 4019 Alco 4-8-8-4 S-1844 69590 retired 1/62 26 4/28/2007
UP 4020 Alco 4-8-8-4 72777 Blt. Nov. 1944, scrapped May 24, 1963. 6 6/4/2021
UP 4021 Alco 4-8-8-4 S-1936 72778 blt 11/44, retired 01/62 13 10/28/2013
UP 4022 Alco 4-8-8-4 S-1936 72779 retired 02/62 10 4/15/2012
UP 4023 Alco 4-8-8-4 S-1936 72780 Kenefick Park, Omaha, NE 171 1/1/2000
UP 4024 Alco 4-8-8-4 S-1936 72781 blt 11/44, retired 7/62 11 8/10/2012