All types of construction -- residential, commercial, infrastructure -- are competing for a limited supply of skilled labor as the U.S. emerges from the Great Recession. As a result, projects like a tollroad improvement in Austin, Texas, are adding contractor shortages to the list of things that could delay completion.

A workers' advocate says the construction industry is to blame for the dearth of experienced crew members.

"Companies aren't providing safety training or career pathways, so they're not attracting the best and most qualified workers," says Brigid Hall of the Workers Defense Project.

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