San Antonio aggregate demand is getting another large, sustained source. CyrusOne registered plans on July 16 for a $500 million, 460,000 square foot data center in Medina County, just west of San Antonio. For civil and sitework contractors across San Antonio and Central Texas, a pad that size is early-stage earthwork demand: select fill, road base, and structural fill placed to tight tolerances on a schedule. It is the kind of job that commits local pits and trucks fast, which makes getting in front of it worth doing now.
Data centers get discussed as power and technology stories. On the ground, the first phase is dirt and rock.
CyrusOne registered plans on July 16 for a $500 million, 460,000 square foot data center in Medina County, off U.S. Highway 90 about seven miles from downtown Castroville (Source: Connect CRE, July 2026). Known as SAT14A, it is the company’s sixth data center in the San Antonio region and its eleventh in Texas.
The jobsite translation is straightforward. A building pad of that size, plus access roads, laydown areas, and utility corridors, consumes a large volume of select fill, structural fill, and road base. The earthwork comes first and runs on a compressed schedule, because everything vertical waits on a finished, compacted pad.
“CyrusOne registered plans for a $500 million, 460,000 square foot data center in Medina County, its sixth in the San Antonio region.”
Source: Connect CRE, July 2026
The practical point for San Antonio and Central Texas contractors is timing and competition for supply. A pad graded to tight tolerances needs material on spec, delivered when the crew is ready, not a day late. And a project this large commits nearby pits and haul capacity quickly, which squeezes everyone else working the west side.
The move is to line up sourcing before the sitework ramps. Confirm which pits can meet the fill and base gradations the pad requires, whether that is select fill and sand or road base, and lock haul capacity against the grading schedule rather than your own calendar alone. Keep a second supply point for the weeks the job pulls hardest.
The forward view is that Central Texas sitework demand stays elevated as the Austin to San Antonio corridor keeps attracting projects of this scale. Contractors working our San Antonio service area who treat material sourcing as a scheduled item will hold their grading timelines while the market tightens around them.
The building makes the headline, but the pad under it is a mountain of base and fill.
Line up your fill and base before the pad work ramps. Call 214-282-7980 or request a quote at aggregatesnow.com.