New Hampshire Route 18

"NH 18" redirects here. NH 18 may also refer to Indian National Highway 18.

Route information

Maintained by NHDOT

Length:

20.13 mi^[1] (32.40 km)

Major junctions

South end:

North end:

Highway system

New Hampshire Route 18 is a 20.13-mile (32.40 km) long north–south state highway in New Hampshire. Its northern terminus is at the Vermont state line in the town of Littleton, where the road continues north as Vermont Route 18. The southern terminus of NH 18 is at an interchange with Interstate 93 and U.S. Route 3 in Franconia.

Route description

The entire route is in Grafton County.

Location	Mile	Destinations	Notes
Franconia	0.00	Interstate 93 U.S. Route 3	Southern terminus of NH Route 18. I-93/US-3 Exit 34C.
		NH Route 141	Western terminus of NH Route 141.
		NH Route 142	Southern terminus of NH Route 142. To Interstate 93.
		NH Route 116	Southern terminus of NH-18/116 concurrency. Wallace Hill Road to Interstate 93 (Exit 38).
		NH Route 117	Eastern terminus of NH Route 117.
Littleton		Interstate 93	I-93 Exit 39. NOTE: Partial interchange, SB exit only from I-93.
		U.S. Route 302	Southern terminus of US-302/NH-18/116 concurrency.
		Interstate 93	I-93 Exit 40.
		NH Route 116	Northern terminus of US-302/NH-18/116 concurrency. US-302/NH-18 concurrency continues.
		U.S. Route 302	Northern terminus of US-302/NH-116 concurrency. To Interstate 93 (Exit 42).
		NH Route 135	Southern terminus of NH-18/135 concurrency. To Interstate 93 (Exit 43).
		Interstate 93	I-93 Exit 44.
		NH Route 135	Northern terminus of NH-18/135 concurrency.
	20.13	VT Route 18	Northern terminus of NH Route 18. Southern terminus of VT Route 18.

NH Route 18 uses the following local road names: