A southbound Union Pacific intermodal train meets a BNSF freight at Bealville while climbing California’s Tehachapi Pass carpeted with springtime green on February 26, 2016.

A westbound BNSF grain train rolls downgrade through Bealville, California, on a perfect February 25, 2016.

An eastbound Burlington Northern Santa Fe freight pauses at Caliente, California, on March 15, 2004. A westbound intermodal is approaching and can be seen above the train on the trackage toward Tu... (more)

A trio of SD70Ms lead a westbound (northbound) Union Pacific downgrade into Caliente, California, on March 11, 2005. A short UP work train sits in the siding down at Caliente in the background.

The rear half of an eastbound BNSF intermodal train climbing the grade up Tehachapi Pass at Bealville, California, is made up of exclusively trailer-on-flat-car (TOFC) tonnage as the train snakes ... (more)

A lengthy eastbound BNSF intermodal train climbs the grade up toward Tehachapi Pass at Bealville, California, on February 24, 2016. Leading the train toward the horseshoe curve at Allard is CREX N... (more)

An eastbound BNSF intermodal train climbs the grade up toward Tehachapi Pass at Bealville, California, on February 24, 2016. The train is wrapping around the horseshoe curve at the old location of... (more)

A trio of new GE ET44AC locomotives help a southbound Union Pacific manifest freight upgrade through Bealville, California, on the morning of February 26, 2016.

A southbound Union Pacific manifest freight climbs the Tehachapi Pass grade through Bealville, California, on the morning of February 26, 2016. The train is powered by a pair of GE ET44ACs and a p... (more)

Climbing California’s Tehachapi Pass in the beauty of springtime, a pair of new ET44ACs, along with an ES44AC, power a southbound Union Pacific intermodal train out of Tunnel 2 at Bealville on Feb... (more)

Descending the mountain grade over Tehachapi Pass is a westbound BNSF vehicle train led by GE ES44C4 No. 4258 at Bealville, California, late in the afternoon of February 24, 2016.

A Santa Fe intermodal train drops downgrade through the curves at the west switch of Bealville siding on California’s Tehachapi Pass route on March 10, 1995. A trio of Super Fleet GE C40-8Ws power... (more)

A long eastbound (southbound) BNSF intermodal train has just met a northbound Union Pacific manifest freight in the lengthy siding at Bealville, California, on March 2, 2016. As the BNSF train mar... (more)

Union Pacific GE ES44AC No. 8014 leads three EMD SD70Ms on a southbound intermodal train climbing California’s Tehachapi Pass on sinuous trackage entering the Allard horseshoe curve at Bealville o... (more)

A unit train of cement hoppers drops downgrade through the curves approaching the west switch of the siding at Bealville, California, on March 1, 2016.