Union Pacific No. 3985 or UP No. 3985 is a 4-6-6-4 Challenger type steam locomotive owned by the Union Pacific Railroad. 3985 was built in 1943 by the American Locomotive Company of Schenectady, New York. The locomotive is one of only two of the original 105 Union Pacific Challengers in existence, the other being Union Pacific No. 3977 on static display in North Platte, Nebraska.
3985 is currently in the UP roundhouse shops in Cheyenne, Wyoming and is undergoing boiler work and overhaul since 2010. It is unknown when she will be back in service, but her restoration may resume after Big Boy #4014's restoration is complete.
3985 Pulling The "Golden Challenger" Special On A Round Trip From Chicago To Findlay Junction, Illinois For The NRHS Convention On July 22nd 1993. The Engine's Participation At The Event Was Almost Cancelled Due To Flooding In Nebraska & Missouri.
3985 Pulling The Ringling Bros. and Barnum & Bailey Circus Train in 2010
No. 3985 is Taking Service While Ringling Bros. and Barnum & Bailey Ringmaster Johnathan Lee Iverson gives a speech
3985 coast by
3985 Doubleheading With UP 844.
3985 is hauling a passenger train in 1993. Note the additional Smoke Deflectors required; this was a modification for the trip.