The Town Council has endorsed the transportation sales tax referendum, which would raise $152 million for countywide projects if approved.
Projects included in the referendum for Port Royal are:
Town Councilman Vernon DeLoach said traffic isn't getting any better in Port Royal and that the road improvements are critical to the town's growth.
"We have a lot of cars on the road, and it's not getting any better," he said.
County Councilman William McBride, who represents St. Helena Island, said the improvements will make roads safer.
"We need to improve the roads, and this is the only source we have to do it because the state doesn't have the money," he said.
But a shortfall in state funding to pay for road projects didn't convince county voters to approve sales taxes in 2002 or 2004.
Mayor Sam Murray said the longer the county waits on these projects, the worse the traffic will get.
"Transportation is a regional problem, and it doesn't just limit itself to the town of Port Royal," he said. "The amount of cars we have in the county will increase, and the cost for (maintaining) roads will get worse unless we do something."