New Hampshire Route 135
Map of northern New Hampshire with NH 135 highlighted in red
Route information
Maintained by NHDOT
Length	46.677 mi[1] (75.119 km)
Major junctions
South end	NH 10 in Woodsville
Major intersections	US 302 in Woodsville I-93 / NH 18 in Littleton
North end	US 2 / US 3 in Lancaster
Location
Country	United States
State	New Hampshire
Counties	Grafton, Coos
Highway system
New Hampshire Highway System Interstate US State Turnpikes
← NH 132 → NH 136

New Hampshire Route 135 (abbreviated NH 135) is a 46.677-mile-long (75.119 km) north–south state highway in New Hampshire. The highway runs along the Connecticut River from Woodsville in the town of Haverhill to Lancaster.

The southern terminus of NH 135 is at New Hampshire Route 10 in Woodsville. The northern terminus is at U.S. Route 2 and U.S. Route 3 in Lancaster.

Major intersections

County	Location[1][2]	mi[1][2]	km	Destinations	Notes
Grafton	Haverhill	0.000	0.000	NH 10 – Orford, Hanover	Southern terminus
		1.638	2.636	US 302 – Wells River VT, Littleton, Hanover	Village of Woodsville
	Monroe	11.530	18.556	Barnet Road to US 5 – Barnet VT
	Littleton	21.779	35.050	NH 18 north – Waterford VT	Southern end of wrong-way concurrency with NH 18
		22.568– 22.888	36.320– 36.835	I-93 – St. Johnsbury VT, Littleton, Plymouth	Exit 44 on I-93
		27.593	44.407	NH 18 south – Littleton	Northern end of wrong-way concurrency with NH 18
		27.658– 27.861	44.511– 44.838	I-93 – Littleton, Plymouth, St. Johnsbury VT, Monroe	Exit 43 on I-93
Coos	Dalton	38.871	62.557	NH 142 south – Whitefield	Northern terminus of NH 142
	Lancaster	46.677	75.119	US 2 / US 3 – Groveton, Whitefield, Gorham	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus