An eastbound container train crosses the fill west of Topock, AZ.

Eastbound with a slug of locomotives, probably from a power imbalance, crosses the Colorado River Bridge.

At an evening in summer 1977, a westbound ATSF freight crosses the Colorado river at Topock, leading unit is SD45-2 5687

Eastbound stacker just crossed the Colorado river into Arizona.

Westbound stacker about to cross the Colorado river into California

This is a westbound container train, about to cross the Colorado river into California

The one of a kind yellow power bar BNSF ES44DC 7695 leads an eastbound across the Colorado River into Arizona.

Leaving California behind an eastbound BNSF has just crossed the Colorado River and begins its journey across Arizona at Topock.

This is a westbound manifest...crossing the Colorado River, into California and recrew only a few miles west at Needles. Evidence of the economic recession can be seen, as sidings on both sides of... (more)

This is a westbound stacker...crossing the Colorado River, into California and recrew only a few miles west at Needles. Evidence of the economic recession can be seen, as sidings on both sides of ... (more)

BNSF 7674 brings a hot shot westbound Z train across the Colorado River at Topock on BNSF's Seligman Sub.

Not one speck of orange in this consist! New KCS power and a colorful assortment of locomotives bring an eastbound mixed freight across the Colorado River at Topock.