UP 1826 (SD40N) works a cut of cars in the Union Pacific's North Yard in Denver, Colorado.

Race Court Railroad Crossing. Denver Rock Island Railroad SW1500 no. 1083 is seen crossing Race Ct in Denver, CO as it makes its way to the interchange yard with BNSF.

It is an active day in the Union Pacific's North Yard in Denver, Colorado.

BNSF 6751 (ES44AC) joins other engines waiting for service at the facility in Denver, Colorado.

BNSF 9015 (SD70ACe) leads a freight under the elevated track of the RTD Commuter Rail line between Denver and Thornton, Colorado.

Fresh snow covers the North Yard in Denver, Colorado as UP 1826 (SD40N) works on sorting a cut of cars into the various ladders in the yard.

UP 1826 (SD40N) sits in the North Yard in Denver, Colorado waiting for the call to sort freight cars.

With the Denver skuline in the backgrounf, the BNSF engine facility has several interesting locomotives including two SD40-2s still in BN green, a GP39-2 in "freightbonnet" and in the ba... (more)

A wide-angle view of the engine servicing yard in Denver, Colorado offers a variety of motors waiting for service or assignments.

BNSF 1733 (SD40-2) shuffles a cut of cars in the Denver Yard.

Executive Grinstein BNSF 9709 (SD70MAC) leads the Coors Beer Train through the North Yard towards Denver, Colorado.

North Yard. A variety of equipment sits at Union Pacific Railroad's North Yard in Denver, CO. The yard offices sit near W 48th Ave and Kalamath St, and feature a large "North Yard&... (more)

BNSF 1733 (SD40-2) pulls a cut of cars over the South Platte River in Denver, Colorado.

UP 7793 (ES44AC) sits at the signals in Denver, Colorado.

North Yard. A variety of equipment is seen at Union Pacific Railroad's North Yard as SD70 no. 8463 meanders through with two other remote control locomotives.