A Big Blow turbine and diesel locomotives are ready for departure. Behind 23 are a UP SD40X and SD40, plus two SP SD40's. The SD40X was built on an SD35 platform.

Hump power rests at the East Hump at Bailey Yard in North Platte.

Union Pacific "Challenger" No. 3977 and DDA40X "Centennial" No. 6922 share the display at Cody Park in North Platte, Neb. No. 3977 is the only Challenger on public display -- t... (more)

A westbound UP freight passes the elevator switcher in downtown North Platte. The switcher started life as Pennsylvania Railroad GP9 No. 7810 and eventually wound up in Conrail before being rebuil... (more)

The sun is barely up as a Union Pacific stack train heads east out of North Platte, Neb.

Union Pacific power is worked on at the massive engine facility at Bailey Yard in North Platte, Neb.

A Union Pacific westbound train crosses the North Platte River as it approaches the town of the same name.

Groups of locomotives gather at the engine servicing facility at North Platte, Nebraska, on May 3, 2011.

As freight cars roll over the north track at East Hump, a track gang works on south track on May 3, 2011. Union Pacific’s massive North Platte Yard in Nebraska is always busy and has to keep mov... (more)

A worker in Union Pacific’s North Platte Diesel Shop does some maintenance on GE C44-9W No. 9632 on May 4, 2011. UP No. 9632 is the former Southern Pacific No. 8168.

Union Pacific locomotives due for work and servicing gather inside the main building at the North Platte Diesel Shop on May 5, 2011. UP No. 9829 is a former Chicago and North Western GE C44-9W.

A train with U50 51 and three SD24B's are leaving North Platte's departure yard under stormy skies. On one of the adjacent tracks, a train is headed by what appears to be a U50C.

Departing Union Pacific's Bailey Yard in North Platte, Nebraska, is an eastbound with a typically ecclectic mix of power: UP C30-7 2440, Milwaukee Road SD40-2s 182 and 165, UP U30Cs 2811 and 2951... (more)

UP yard engine North Platte

UP's KG1CI (Priority Intermodal from Global 1, IL to City of Industry, CA) slows down prior to entering Bailey Yard for a crew change as it crosses over the North Platte River.