BNSF 7828 (ES44DC) leads a freight over the iconic Santa Fe Bridge in Larkspur, Colorado as it runs south on the Joint Line.

BNSF 7272 (ES44DC) leads a stack train through the S curves between Spruce and Palmer Lake, Colorado.

BNSF 7955 (ES44C4) leads a Federal Railroad Administration Office of Safety DOTX track measurement car through the S curves at Sedalia, Colorado as it heads north on the Joint Line.

BNSF 7955 (ES44C4) leads a Federal Railroad Administration Office of Safety DOTX track measurement car, which worked the Joint Line as it passed a bunch of cows in Spruce, Colorado.

This colorful consist included a Federal Railroad Administration, Office of Safety DOTX track measurement car, which was working on the Joint Line in Monument, Colorado.

Engine problems for the California Zephyr 6 train meant that they ran with one engine going east from Denver. Here we see it running into the Keenesburg, Cut in Keenesburg, Colorado.

The California Zephyr 6 train was over 12 hours late at Denver, offering this rare opportunity to get the train in good sunlight at Keenesburg, Colorado as it ran east on the Brush Sub.

The California Zephyr heads into the east portal of the Moffat Tunnel as the changing aspen provide a gold backdrop on the mountain.

BNSF 6015 ES44AC runs through the S curves at Monument, Colorado as it heads south along the Colorado Front Range.

Palmer Lake, Colorado has some of the best scenery in the state for photographing the numerous coal trains that run on a daily basis through town.

BNSF 6015 (ES44AC) leads a loaded coal train through Palmer Lake, Colorado. Homeowners on the hill in the background have a bird's eye view of the busy Joint Line that runs through town.

A loaded BNSF coal train running through Greenland, Colorado on the southbound Joint Line passes a Union Pacific military train which is heading north on the Joint Line.

BNSF 6200 (ES44AC) runs through Spruce, Colorado, passing a signal and the trusty chase vehicle of the photographer.

BNSF 8472 (SD70ACe) leads a loaded coal train over the Santa Fe Bridge in Larkspur, Colorado.

BNSF 2857 (GP39-2) runs through Louisville, Colorado on the Front Range Sub.