What is now Route 55 was originally proposed in the 1950s as a toll road called the Cape May Expressway that was to run from the Walt Whitman Bridge to Cape May. In 1962, the New Jersey Expressway Authority was created to build the Cape May Expressway and the Atlantic City Expressway. However, by 1965, the road to Cape May was turned over to the New Jersey Department of Transportation (NJDOT) and designated as Route 55, which was to run from Westville to Cape May Court House. The first portion of the route opened around Millville in 1969 while the section bypassing Vineland was completed in the 1970s. Route 55 was completed north to Deptford in 1989.