A rare sight these days is seeing a patched Southern Pacific engine leading a Union Pacific Freight. UP 6318 (AC4400CW-CTE) leads a grain train through Peoria, Colorado on its way to Kansas.

The massive overhead crane inside the Backshop at Union Pacific’s Burnham Shops in Denver, Colorado, easily lifts the old 4,400 hp 7FDL16 prime mover out of UP GE AC4400CW-CTE No. 5687 during an... (more)

Union Pacific GE AC4400CW-CTE No. 5687 is being overhauled in the backshop at the railroad’s Burnham Shops in Denver, Colorado, on December 7, 2015. The old 4,400 hp 7FDL16 prime mover is lower ... (more)

At sunrise on January 26, 2007, an eastbound Union Pacific coal train drops downgrade into Leyden, Colorado, leaving the front range mountains behind.

It’s twilight on December 7, 2015, as Union Pacific GE AC4400CW-CTE No. 5687 sits inside the cavernous main hall of the former Rio Grande backshop at Burnham Shops in Denver, Colorado.

Union Pacific GE AC4400CW-CTE No. 5687 is inside the former Rio Grande backshop at Burnham Shops in Denver, Colorado, for an overhaul on the evening of December 7, 2015.

A southbound stack train waits for a signal at the Columbia River Drawbridge. The ability to get up close and personal with Amtrak, BNSF and UP trains is a big factor in the railfan appeal of the ... (more)

UP 5861 & 8056 with westbound stacks.

An eastbound Union Pacific freight drops downgrade on Peru Hill, west of Green River, Wyoming, on June 25, 2021.

Stalling. Snaking upgrade through Tunnels 1 and 2 at just 3 mph, UP 5260 south and two fellow GE's are close to loosing the battle of getting the ILTSIR-31 over Tehachapi this morning. Whil... (more)

KSILB passes under the West Wellton searchlights as the tail end of the AMINGR accelerates from a stop on a very busy afternoon along the Gila Sub.

A traffic jam on the country's busiest railroad is brewing. An empty coal train waits for its slot to run back to the Powder River Basin while a loaded coal train slowly rolls as traffic ahead has... (more)

UP 5631 & 7615 power a westbound grain train.

A Union Pacific coal empty passes a BNSF load on top of Logan Hill, Wyoming, on the afternoon of June 18, 2015. In the distance is another UP coal train heading toward Bill.

A manifest heads north between Salt Lake City and Ogden.