Waco I-35 construction is putting sustained road base demand into a Central Texas market that has been comparatively quiet. TxDOT’s My35 Waco South project is widening about three miles of I-35 from six main lanes to eight, a roughly $250 million job that also reconstructs overpasses and frontage roads. For civil contractors and paving crews around Waco, mainlane widening is base and subgrade work, placed by the truckload on a schedule that does not move.
The I-35 rebuild gets talked about as an Austin story. It is moving through Waco now.
TxDOT’s My35 Waco South project covers roughly three miles of I-35 between South Loop 340 and 12th Street at about $250 million. It widens the main lanes from six to eight, reconstructs overpasses and frontage roads, realigns ramps, adds sidewalks, and builds a diverging diamond interchange at Valley Mills Drive.
That sits inside a heavy statewide letting year. TxDOT expects to issue 768 construction awards in 2026.
Here is the jobsite translation. Mainlane widening and frontage road reconstruction are base-heavy scopes. Flexible base placed under TxDOT Item 247 goes down by the truckload to a specified compacted depth, and the sequencing on an active interstate is unforgiving. Material has to be there on the day the lane closure allows the work.
“The $250 million My35 Waco South project widens I-35 main lanes from six to eight and rebuilds overpasses, frontage roads, and ramps.”
Source: TxDOT, 2026
The practical impact for Central Texas contractors is competition for local supply. Waco has not carried corridor work at this scale in years. When a job like this ramps, the pits and trucks serving the area get committed to it, and everyone else works around that.
The move is to plan base and fill sourcing on any Waco-area job against the corridor schedule rather than against your own calendar alone. Confirm delivery windows early on flex base and road base, and keep a second supply point for the weeks the corridor is pulling hardest.
The forward view is multi-year. Interstate reconstruction of this scope runs long, and with 768 awards statewide in 2026, TxDOT demand is not easing across Central Texas. Contractors working our Waco service area who treat material as a scheduled resource will keep placing while others wait.
Waco has been the quiet stretch of I-35 for a long time, and that is over.
Get your base and fill scheduled against the corridor, not after it. Call 214-282-7980 or request a quote at aggregatesnow.com.