State Highways of New Jersey



NJ 12 is one of the highways that was included in the 1927 state highway legislation, listed as running from Frenchtown to Somerville. The section between NJ 31 in Flemington and NJ 28 in Somerville was built instead as part of NJ 29 (now US 202); NJ 12 ends at the Flemington circle.

The Delaware River bridge at the west end of the highway is maintained by the Delaware River Joint Toll Bridge Commission, but there are no tolls charged on it. The commission maintains many of the “free” river crossings, from the “Trenton Makes” bridge between Trenton and Morrisville to the Northampton Avenue bridge between Phillipsburg and Easton, as well as toll crossings from Trenton to Montague.

Mile Street Name Feature
  Road continues eastward as US 202
11.69 Eastern terminus of NJ 12, Flemington Boro, Hunterdon Co
11.69 NJ 12 US 202NJ 31 circle US 202NJ 31
11.44 NJ 12   circle Main StCR 611
11.22 NJ 12 BR&W Railroad at grade BR&W Railroad
10.98 NJ 12 Flemington Boro, Hunterdon Co
Raritan Twp, Hunterdon Co
10.94 NJ 12 Walnut Brook bridge Walnut Brook
10.73 NJ 12 SR 523Flemington Rd circle Flemington RdSR 523
10.54 NJ 12 Old Croton Rd Signal Dayton Rd
8.40 NJ 12 Plum Brook culvert Plum Brook
7.48 NJ 12 Raritan Twp, Hunterdon Co
SR 579Ringoes-Croton Rd Signal Ringoes-Croton RdSR 579
Delaware Twp, Hunterdon Co
7.12 NJ 12 Wickecheoke Creek bridge Wickecheoke Creek
6.55 NJ 12 Delaware Twp, Hunterdon Co
Franklin Twp, Hunterdon Co
6.40 NJ 12 Branch Wickecheoke Creek bridge Branch Wickecheoke Creek
6.13 NJ 12 Franklin Twp, Hunterdon Co
Kingwood Twp, Hunterdon Co
6.10 NJ 12 CR 615Pittstown Rd    
4.06 NJ 12 Lockatong Creek bridge Lockatong Creek
3.23 NJ 12 SR 519Kingwood Rd Signal Kingwood RdSR 519
1.01 NJ 12 Kingwood Twp, Hunterdon Co
Frenchtown Boro, Hunterdon Co
0.94 NJ 12 NJDOT jurisdiction
Hunterdon Co jurisdiction
0.29 Kingwood Ave Nishiskawick Creek culvert Nishiskawick Creek
0.27 Kingwood Ave SR 513Race St Signal  
0.21 Bridge St     Trenton RdNJ 29
0.12 NJ 12 Hunterdon Co jurisdiction
Delaware River Joint Toll Bridge Commission jurisdiction
0.00 NJ 12 Delaware River bridge Delaware River
0.00 Western terminus of NJ 12, Frenchtown Boro, Hunterdon Co


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