New Jersey Route 12

Route 12
Route information
Maintained by NJDOT, Hunterdon County, and DRJTBC
Length	11.69 mi[1] (18.81 km)
Existed	1927–present
Major junctions
West end	Uhlerstown–Frenchtown Bridge in Frenchtown
Major intersections	Route 29 in Frenchtown CR 513 in Frenchtown CR 519 in Kingwood Township CR 579 in Delaware / Raritan Township CR 523 in Raritan Township
East end	US 202 / Route 31 in Flemington
Location
Country	United States
State	New Jersey
Counties	Hunterdon
Highway system
New Jersey State Highway Routes Interstate US State Scenic Byways
← Route 11 → Route 13

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 (US 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 (CR 513) in Frenchtown, CR 519 in Kingwood Township, CR 579 on the border of Delaware Township and Raritan Township, and CR 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 US 202 between Flemington and Raritan. By the 1940s, US 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.