UP 4161 (SD70M) and its MOW train holds position while a Herzog vehicle checks the main line adjacent to the UP's North Yard in Denver.

NS L24 is one of two local jobs out of the heart of the Cleveland District known as South Lorain Yard. L24s duties are to switch Ford and PolyOne/Lubrizol, this job is a daily move but it more oft... (more)

UP 1459 (GP40-2) gets ready to move out into the North Yard to pick up string of freight cars.

UP 1640 (SD40N) and mate work the North Yard in Denver sorting freight cars while UP 3922 (SD70M) gets ready to lead two other power units and a long freight out of the yard.

A yard worker looks back to see a UP heavy belching smoke over the other engines in the North Yard.

BNSF 2816 joins three other pumpkins in the yard at the engine servicing facility in Denver. 2816 started life with the Great Northern as a GP30, and was later rebuilt as a GP39M for the Burlingt... (more)

UPY 618 brings a freight out of the North Yard, which just received a fresh layer of snow the night before.

Over the past couple months there seems to have been an increase in the number of UP engines in the North Yard.

A freshly painted UP 1842 shows off the new colors in the UP's North Yard. She started life as an SD40-2 but was rebuilt with an SD40N designation.

UP 1348 (ex Denver & Rio Grande Western GP40-2) gets some help from a leased unit to pull a freight out of the North Yard.

The UP and BNSF operate side by side at the UP's North Yard in Denver.

UPY 577 strains to pull a cut of cars in the UP's North Yard in Denver.

The sand is flying as UPY 647 muscles a heavy cut of cars out of the North Yard for sorting. UP 3885 (SD70M) has just brought a new load of freight cars into the yard.

UPY 691 (GP15-1) makes smoke as it repositions in the North Yard to pull another cut of freight cars for sorting.

A variety of light units work the UP North Yard in Denver, including UP 712 (GP38-2), UP 1826 (SD40N) and UP 1422 (GP40-2)