Clinton already raised it a nickel per gallon (actually 4.3 cents) way back in 1993, and that didnt stop the bridge collapse.
The gas tax was originally intended to be a "user fee" -- a quasi-toll for using roads, bridges and highways. But for more than a decade the federal highway trust fund has been accumulating billions more from the tax than has been spent on roads. In fact, the revenues from Bill Clinton's 1993 gas tax hike were explicitly dedicated to reducing the deficit, not fixing roads.
http://www.cato.org/dailys/12-02-97.html
dONT LET ANYONE FOOL YOU INTO BELIEVING AMERICANS ARE SO STUPID AS TO SUPPORT A NEW FEDERAL GAS TAX INCREASE.
Here is one poll. Please check google (enter: gas tax polls) for many, many others that say the same thing. Even MN citizens don’t approve of a new gas tax (see kstp.com).
http://i.a.cnn.net/cnn/2007/images/08/09/rel8b.pdf