The cost of U.S. traffic congestion has jumped to $115 billion in 2009 from $24 billion in 1982, and trucks are shouldering a disproportionate share of the cost, according to a report released this week.

The continuing delay in passing a new long-term highway bill has trucking executives and transportation officials worried about the effects on the U.S. freight network, according to David Abney, chief operating officer of UPS Inc.