Union Pacific 3985 Article Index for
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Information About

Union Pacific 3985




  Powertype Steam
  Gauge
  Railroad Union Pacific
  Whytetype 4-6-6-4
  Disposition operates in occasional excursion service
  Roadnumber 3985
  Nicknames "Challenger"


Union Pacific 3985 or '''UP 3985''' is a 4-6-6-4 Steam Locomotive owned by Union Pacific Railroad . It is the largest operating steam locomotive in the world. It was originally retired and placed on display, but later a group of UP volunteers overhauled it and returned it to operable condition. It is now used for excursion trains.


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