Latest info on the move of Up 4014 ........... Phase 3 The move of Union Pacific Big Boy from West Colton to Cheyenne will most likely occur during April, 2014. An exact date has not yet been set. The trip is expected to take close to two weeks. The Union Pacific Steam Crew is responsible for the operation of all of UP's heritage equipment, and the rotary snowplow based in Cheyenne is included. The crew must be available to operate the plow, if needed, on rail lines throughout the western United States (except Donner Pass). Union Pacific does not want to start moving the 4014 until the threat of a large winter storm has diminished. When a move date has been selected, it will be announced by Union Pacific as soon as is practical. However, the move is subject to many factors that can change on short notice. Anyone planning to follow the move should keep their plans flexible.