The highway investments in the stimulus law have been a bright spot for a transportation construction industry hard hit by recession-induced cutbacks in state programs and decline in private sector work.

But continued uncertainty about passage of a multi-year surface transportation reauthorization bill is hindering chances for a sustained economic recovery.

That was the thrust of the message delivered by Kevin Gannon, vice president of Appleton, Wis.-based Northeast Asphalt Inc., at a House Transportation & Infrastructure Committee hearing on implementation of the American Recovery & Reinvestment Act.

Gannon, a director on the American Road & Transportation Builders Association board, told the committee that recovery act-funded projects his company is working on have not wholly offset the 50 percent drop in private sector work in recent years.

He said, however, that ARRA projects have allowed them to hang on to the firm’s existing workforce.

Gannon noted that more than 11,000 highway and bridge projects under the recovery act had moved to the construction stage and over 3,000 were now finished, worth a total of $23 billion.

“This is $23 billion that is generating jobs in direct construction and the supply sectors and all of it is boosting the economy,” Gannon said.

He cautioned that while the recovery act was currently supporting transportation work and jobs in 2010, its impacts will phase down quickly when those funds are no longer available in 2011.

“Frankly, the uncertain outlook about the reauthorization of the federal highway and public transportation programs is making a challenging situation worse,” Gannon said. “It is also the uncertainty and trepidation caused by how the delay is being handled—with short-term extensions and deficit spending.”