Route 138 is a state highway located entirely in Monmouth County, New Jersey that extends for 3.52 miles (5.66 km). The route's western terminus is at the eastern end of Interstate 195 (I-195) at the interchange with Route 34 in Wall Township. Route 138's eastern terminus is at Route 35 in Wall Township. The highway is also meant to be an evacuation route in case of a disaster, where the eastbound lanes would be reversed all the way to the New Jersey Turnpike.

Interstate 195 (I-195) is an auxiliary route of the Interstate Highway System located in the US state of New Jersey. Its western end is at I-295 and Route 29 just south of Trenton in Hamilton Township, Mercer County, while its eastern end is at the Garden State Parkway, Route 138, and Route 34 in Wall Township, Monmouth County. I-195 is 34.17 miles (54.99 km) in length. The route is mostly a four-lane highway that mainly runs through agrarian and wooded areas in Central Jersey. It has an interchange with the New Jersey Turnpike (I-95) in Robbinsville Township and serves as a main access road to New Jersey's state capital of Trenton, the Horse Park of New Jersey, the Six Flags Great Adventure amusement park, and the Jersey Shore. I-195 is occasionally referred to as the Central Jersey Expressway. On April 6, 1988, President Ronald Reagan signed H.R. 4263 naming I-195 in New Jersey the James J. Howard Interstate Highway, in honor of the late James J. Howard.