Freight Class I Union Pacific completes expansion of Casa Grande, Ariz., yard

Union Pacific completes expansion of Casa Grande, Ariz., yard

By Trains Staff | December 15, 2025

Work doubles capacity of facility west of Tucson

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Elevated view of small yard at sunset
Union Pacific has doubled the capacity of its yard at Casa Grande, Ariz. UP

CASA GRANDE, Ariz. — Union Pacific has completed expansion of its Gasa Grande Yard, doubling capacity at the facility about 70 miles west of Tucson on the railroad’s Gila Subdivision.

The project added four tracks and a new industrial lead, and included a powered switch, a new yard control point, and upgraded mainline signals.

“The new power switch helps train crews, who can avoid slips, trips, and strain by no longer having to hand throw the switch,” Marc Chavez, UP manager-Signal Construction, said on the railroad’s website.

The yard serves local industries and supports manifest freight as part of the railroad’s Sunset Route.

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