Overland route of Union Pacific through southwest Wyoming from Rawlins to Green River set in the height of motive power transition in 1956. Double track mainline action with Steam, diesel and turnbine power under ABS control. Operations include passenger and freight traffic, local operations and yard service.

The Green River yard has a locomotive servicing area, coach yard and east and west freight car classification section, the latter has the capacity to hold 400 cars. The mid 1950’s were also a time for passenger service including both City and secondary passengers. Eighteen passenger trains plus second sections and extras run during a 24 hour period, many of which require headend work in Green River.