 The route was legislated in 1927 to run from Route 35 (present Route 88) in Laurelton north to Route 4 (present Route 79) in Matawan.The current alignment of Route 34 north of Matawan was a part of Route 4 (and later US 9) until it became a part of Route 4A following a realignment of US 9 and Route 4.In 1953, Route 34 was extended north along Route 4A to end at US 9 in Old Bridge Township.