New Jersey Route 64

Route 64 is a 0.32-mile-long (0.51 km) state highway in the U.S. state of New Jersey. It is a state-maintained bridge over Amtrak's Northeast Corridor line in West Windsor. Route 64 begins at an intersection with County Route 571 in West Windsor. It heads along the bridge to an intersection with County Route 615, where Route 64 ends. County Route 571, which is concurrent with Route 64, continues to Hightstown.

Route 64 was designated originally as an alignment of Route 31A, a spur off of State Highway Route 31 (currently U.S. Route 206) from Princeton eastward to Hightstown, where it met State Highway Route 33. The state planned on turning the alignment into a full-fledged expressway for several decades, including constructing the alignment that Route 64 currently uses in 1939. The route was amended in 1941, and was renumbered from Route 31A to Route 64 in the 1953 renumbering. Route 64 was proposed to become part of the Princeton–Hightstown Bypass (later designated Route 92), but completion never occurred. Currently, the route remains the bridge over the Northeast Corridor. However, it is not currently planned that Route 64 will receive an extension of sorts from the proposed Penns Neck Bypass to U.S. Route 1, a proposed realignment of County Route 571.