Business groups counting on Republican gains in Congress to deliver their legislative agenda are voicing frustration over obstacles within a party usually allied with their interests.

At least two measures are hitting snags — long-term highway construction funding and authority to keep the Export-Import Bank in business beyond May 31. Many of the Republicans elected in 2010 lean too heavily toward the demands of the Tea Party and other anti-spending groups, business leaders say.

"There are a number of Republican members, particularly new members, who are against the federal government having a large role in transportation issues," said Pete Ruane, president of the American Road and Transportation Builders Association in Washington, D.C. "I don't understand that," Ruane said. "Their larger idea of cutting off federal spending trumps their support for transportation."