U.S. Sens. Bob Corker, R-Tenn., and Chris Murphy, D-Conn., introduced legislation Wednesday to raise the country's gas tax as a plan to save the Highway Trust Fund from drying up.

"That'll raise enough money to fill the current gap and perhaps modestly increase our ability to make sure long overdue infrastructure investments over the next decade," explained Murphy.

"If something's important enough to have," Corker said. "It's important enough to pay for."

The bipartisan legislation would raise the gas tax by six cents in 2014 and then another six cents in 2015 to make up for inflation over the past twenty years. The gas tax currently stands at 18.4 cents per gallon — a number that hasn't changed since 1993.

The Highway Trust Fund, which funds infrastructure in the U.S. is set to run out of money by the end of this summer. Should that happen, approximately 660,000 jobs would be in jeopardy.

The senators expect their proposal to be added into a Senate Finance Committee Bill later this year.