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Construction material shortages are delaying TxDOT projects and driving up their costs

Traffic in icy and rainy conditions on I-35 S in South Austin during a winter storm warning.
Gabriel C. Pérez
Rising costs for construction materials like steel and concrete could delay TxDOT road projects or push their price tags higher.

A shortage of building materials like steel and concrete is driving up costs for Texas Department of Transportation road projects and could delay some construction contracts.

"We have also seen significant increases (over 100% in some cases) in some material prices," TxDOT's Construction Division Director Duane Milligan wrote in an internal memo dated April 5. After the Quorum Report broke the story Friday morning, TxDOT provided the memo upon request.

Economists say rising petroleum costs, COVID-related shutdowns, increased demand for materials and a worker shortage are among the factors pushing prices higher for road-building materials like steel and concrete.

"Contractors all over the country have been running into extreme price increases and delays on getting materials delivered, and shortages of workers to perform the work when they do have the materials," said Ken Simonson, chief economist with the Associated General Contractors of America.

TxDOT has more than 15,000 projects in the works totaling $156 billion, according to the agency's project tracker. About half the projects are underway or scheduled to start soon.

Milligan offered a handful of tactics to officials in TxDOT's 25 district offices for dealing with shortages and price hikes, including delaying projects to give contractors more time to get the materials they need.

District engineers and construction managers could also substitute construction materials "when the substituted material and design serves the same function of the original design," Milligan wrote.

The memo advised local TxDOT officials to consider removing work or materials from a road project "when the deletion will not affect the safety of the completed project."

A TxDOT spokesperson said it was too soon to say how inflation and material shortages could affect the timing or cost of the I-35 Capital Express project, a sweeping plan to widen the interstate through Travis County by adding additional lanes.

The estimated cost of the I-35 expansion is $5.7 billion with $4.9 billion of that paying for the central portion from Ben White Boulevard to U.S. 290 East.

The I-35 expansion requires seizing some 30 acres of land across dozens of tracts through Central Austin. With the median sales price of a home in Austin topping $600,000, land acquisition is likely to drive up project costs too, because TxDOT has to pay market value for any expropriated land.

Another infrastructure megaproject in Austin is coping with similar market forces. A voter-approved plan to build two light-rail lines through the city, including a subway downtown, now tops $10 billion, an increase of more than 40% over initial estimates.

While $2 billion of the Project Connect cost increase is blamed on extending the length of a subway tunnel, rising prices for construction materials, labor and real estate are also pushing estimates higher.

Even if prices for materials and real estate stop accelerating — the economist Simonson said more steel-making capacity is coming online over the next year or so — a shortage of construction workers could complicate both projects.

"It's an ongoing challenge for contractors to get enough workers," Simonson said. "The country has really neglected its career and technical education programs that are the pipeline for bringing people into fields like construction."

Nathan Bernier is the transportation reporter at KUT. He covers the big projects that are reshaping how we get around Austin, like the I-35 overhaul, the airport's rapid growth and the multibillion-dollar transit expansion Project Connect. He also focuses on the daily changes that affect how we walk, bike and drive around the city. Got a tip? Email him at Follow him on X @KUTnathan.
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