A Tier 4 UP 3056 (SD70ACe-T4) waits for servicing in the North Yard in Denver, Colorado.

UPY 618 (GP15-1) sorts a cut of hoppers into the various ladders in the Union Pacific's North Yard in Denver, Colorado.

The Big Boy rests at the engine service area at Bailey yard the night before strutting her stuff to Grand Island.

A westbound empty coal train heads through Wood River, NE on the evening of Friday, August 30, 2024.

Roadside Wildflowers | A Union Pacific train of loadeed coal cars heads east on the Marysville Subdivision near Fairfield, NE on the sunny afternoon of Friday, August 30, 2024.

UP 7611 (ES44AC) leaves Denver and heads west on the Moffat Tunnel Sub.

LUE46 has pulled up in front of the silo in Erda, Utah. Two crew members are off the train pulling switches, unlocking gates so they can go to work switch out the cars.

No day off for the LUE46 local. I was able to catch the LUE46 out running on the morning of Labor Day. Granted they only had four cars. They are heading for the silo in Erda.

UP 4014 leads the excursion train through Bear River Gorge in the middle of the morning.

UP 1914 leads a transfer from Bensenville Yard back to Proviso Yard. Tagging along is SVGX 7407 an EMD SW10 that took up residence in Bensenville Yard for a few weeks.

A former Southern Pacific engine leads a train of empty coal hoppers west past a soybean field near Fairfield, NE on the warm afternoon of Friday, August 30, 2024.

One-Unit Autos | A single C44ACM leads an eastbound train of autoracks on the Marysville Subdivision near Hastings, NE under the sunny afternoon skies of Friday, August 30, 2024.

UP 5286 & 6699 eastbound with auto racks.

UP 1598 (SD40N) heads towards the services islands for fuel as a line of SD70Ms occupy the other track.

The yard is busy on this day as UP 1817 (SD40N) moves a cut of cars for sorting into the Union Pacific's North Yard in Denver, Colorado.