 Construction on the bridge had begun back in the late 1960s with the announcement of Route 18's upgrade to a freeway between New Brunswick and Middlesex, and by 1970, the bridge piers were in place.However, environmental concerns stalled the construction of the Route 18 freeway for almost a decade, and the piers stood unfinished until 1983 when the freeway and bridge were finally completed as far as River Road in Piscataway.The bridge was originally known as the Raritan River Bridge, but was renamed in honor of John A. Lynch Sr., the former State Senator from the district that included New Brunswick and Piscataway, a former mayor of New Brunswick, and the father and namesake of John A. Lynch Jr., who held those positions at the time of the bridge's completion.