In 1969, the first segment of Route 55 opened between Maurice River Township and the Vineland-Millville border, connecting to Route 47 at both ends. In the 1970s, the planned northern terminus of Route 55 was moved to Route 42 in Deptford. The portion of Route 55 between Route 47 in Millville and US 40 in Franklin Township was completed in the mid-1970s while the portion between US 40 and Route 42 was completed in October 1989. The Route 55 freeway has been instrumental in bringing economic development to southern New Jersey. The most common use of the highway is as a commuting route northward to Philadelphia. Following its completion, residential development in the southern part of Gloucester County has increased.