Congress should consider raising the federal gas tax for the first time since 1993, Transportation Secretary Ray LaHood said Monday during a visit to Fort Worth.

LaHood pledged to work with Congress on passing a five-year transportation bill in 2010. The main sticking point, he said, is that although about $500 billion in highway, bridge and transit needs have been identified, the federal gas tax — 18.4 cents a gallon for gasoline — can't generate that much revenue.