New Jersey Route 12

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Route 12 marker

New Jersey State Highway Routes

Route 12 is a state highway located in Hunterdon County, New Jersey, United States. It runs 11.69 mi (18.81 km) from the Uhlerstown-Frenchtown Bridge at the Delaware River border with Pennsylvania in Frenchtown east to an intersection with U.S. Route 202 and Route 31 at the Flemington Circle in Flemington. The route is mostly a two-lane undivided road that passes through rural areas of woodland and farmland. It intersects Route 29 and County Route 513 in Frenchtown, County Route 519 in Kingwood Township, County Route 579 on the border of Delaware Township and Raritan Township, and County Route 523 in Raritan Township.

The route was designated in 1927 to run from Frenchtown to Raritan, Somerset County, running along its current alignment to Flemington and following present-day U.S. Route 202 between Flemington and Raritan. By the 1940s, U.S. Route 202 and Route 29 replaced Route 12 east of Flemington, and the route was officially designated to end in Flemington in 1953. There are currently plans to modify or eliminate three traffic circles along the route in Flemington to ease traffic congestion.


Route description

Route 12 begins at the Uhlerstown-Frenchtown Bridge over the Delaware River in Frenchtown at the Pennsylvania/New Jersey border, where it connects to Pennsylvania Route 32.[1][2] The bridge has a 15 mph (24 km/h) speed limit and is maintained by the Delaware River Joint Toll Bridge Commission.[1] The route continues through the downtown area of Frenchtown as 25 mph (40 km/h) county-maintained two-lane undivided Bridge Street.[1][2] Here, it intersects the northern terminus of Route 29 (Trenton Road) before turning north and intersecting the southern terminus of County Route 513 (Race Street).[1] Route 12 heads east on 30 mph (48 km/h) Kingwood Avenue, with the speed limit increasing to 40 mph (64 km/h) as it passes through residential areas.[1][2] The route crosses into Kingwood Township, where it becomes a 50 mph (80 km/h) road maintained by the New Jersey Department of Transportation with two eastbound lanes and one westbound lane.[1] It heads through a mix of woods and farms with intermittent residences, narrowing to one lane in each direction before crossing County Route 519 (Kingwood Road) in Baptistown.

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