Why might an increase in the gas tax to finance transportation infrastructure be a political equilibrium?

The American Society of Civil Engineers says more than 550 of New Jersey’s bridges need major repairs.
With the state’s roads and bridges falling apart, and with its transportation trust fund running dry, New Jersey lawmakers are considering raising the gas tax from 14.5 cents per gallon, the second-lowest in the country, to 37.5 cents a gallon, bringing it closer to that of New York and other neighboring states.