Infrastructure Costs On The Rise

The problems have come as many governments pursue ambitious projects to improve roads and airports, build schools and upgrade long-neglected water and sewer systems. Many of the projects were conceived when money from property, sales and income taxes was steady and interest rates low, but officials say the ground has shifted beneath their feet.

Costs have jumped for projects as varied as levee construction in New Orleans, Everglades restoration in Florida and huge sewer system upgrades in Atlanta. The reconstruction of the Interstate 35W bridge in Minneapolis, a $234 million project, has been fast-tracked for completion by December, and state officials say it is too soon to know whether it will come in on budget.

The impact has been felt in different regions at different times, and not every project has been high-profile. In Oregon, high costs have forced the State Department of Transportation to slow the rate at which it upgrades roads and bridges. In Seattle, school building projects were put on a fast track this fall because of fears of cost overruns.