Route 59 is the shortest state highway in New Jersey, United States, at long. The route consists entirely of a short block of Lincoln Avenue from Union County Route 610 (known locally as South Avenue) in Cranford to New Jersey Route 28 (known locally as North Avenue) along the Cranford–Garwood border. The route functions as an underpass under the Raritan Valley Line of NJ Transit, under which it crosses about halfway down the block, along the municipal border. Route 59 was originally a proposed alignment of Route 22, which was supposed to head from an intersection with current day New Jersey Route 159 in Morris County at the Pine Brook Bridge before heading through several counties, terminating at an intersection with New Jersey Route 27 in Rahway. Most of the route was not constructed, and a portion in Garwood and Cranford was re-designated Route 59 in the 1953 New Jersey state highway renumbering on January 1, 1953.
Route description
left|thumb|Route 59 southbound as seen from the Raritan Valley Line. The intersection with CR 610 is visible ahead
Route 59 begins at a four-way intersection with Union County Route 610 (CR 610; South Avenue) in the community of Cranford. Route 59 heads northwestward, passing a couple of businesses in both directions. The route crosses under the NJ Transit-owned Raritan Valley Line at which point the border of Cranford and Garwood runs along the center of the road. The route continues to the northwest, passing businesses before ending at a signalized T-intersection with Route 28 (North Avenue). The pavement ends at the intersection through a state-constructed bridge carrying the intersection over a small creek is angled such that a road could continue northwest. Throughout the entire length of the route, it is four lanes wide (two in each direction).