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)

I heard the UP's Green River Sub dispatcher talking to the Dirt Train a couple of times but I could not figure out where the train was. Finally I heard the crew request permission to enter the mai... (more)

UP 1817 and UP 1881 are fairly new rebuilds of SD40-2 engines to a SD40N designation. Many of the on line rosters still have these numbers assigned to B40-8 models. These two were caught waiti... (more)

Switching duties at Albina with a new SD40N