WASHINGTON — Leaders of a key U.S. Senate committee said bipartisan support for their two-year transportation reauthorization plan is growing, although they have yet to introduce a bill.

It was heartening to hear last week from a bipartisan group of heavy-hitters in the U.S. Senate that they were prepared to lead the charge to get a transportation funding bill through Congress.

Barbara Windsor, chairman of American Trucking Associations, told a congressional panel that the next surface transportation reauthorization measure should feature more effective highway-focused programs.