A hazy day finds only light engines in the UP's North Yard, including UP 1667, a recently rebuilt SD40N (and new to the data base).

A bunch of newly painted SD40N units waiting in the 36th Street Yard for orders.

UP 1826 (SD40N) sands the track for traction as it sorts cars in the North Yard. Meanwhile a quartet of heavies has just brought a new string of freight into the yard and will soon detach and hea... (more)

Two of UP's recently refurbished SD40N units sit idle in the 36th Street Yard.

A newly rebuilt UP 1826 (SD40N) works the last car in a string in the 36th Street Yard while UP 6609 (AC4400CW) waits for orders.

UP 1672 (SD40N) holds a spot in the 36th Street Yard, waiting for the call to sort freight cars.

A UP transfer quietly rolls along and under downtown St. Paul, MN on a nice spring morning.

UP 1826 (SD40N) works the UP's North Yard in Denver, along side a very long train of Vestas wind turbine pieces.

You can always find a variety of light duty engines in the UP's 36th Street Yard. Denver's RTD also constructed a commuter rail station adjacent to the yard, which will provide interesting opport... (more)

A crewman gets a cold ride back to the North Yard during a snowstorm.

UP SD40Ns 1923 and 1818 tow a long string of containers out of Global 3 for headroom, about to duck under Thorpe Rd. in Flagg, IL.

A variety of UP power wait in the North Yard for assignments, including UP 1672 (SD40N) and UP 4495 (SD70M).

A three unit set of Union Pacific's sharp looking SD40N rebuilds handles a cut of cars at the West Colton departure yard as they approach the Pepper Ave. overpass.

With evening temperatures hovering around 10 degrees, UP 1640 (SD40-2 rebuilt as a SD40N) brings a crew into the 36th Street Yard.

A stunning Colorado sunrise catches UP 1817 getting an early start in the Denver North Yard. The magic 4 to 5 minutes when the sun peaks over the horizon and shines that colorful glow on the unde... (more)