New Hampshire Route 142

New Hampshire Route 142 (abbreviated NH 142) is a 19.688-mile-long (31.685 km) north–south state highway in northern New Hampshire. The highway runs between Franconia in the White Mountains Region to Dalton in the upper Connecticut River valley.

New Hampshire Route 142
Map of northern New Hampshire with NH 142 highlighted in red
Route information
Maintained by NHDOT
Length	19.688 mi[1] (31.685 km)
Major junctions
South end	NH 18 in Franconia
	I-93 in Franconia US 302 in Bethlehem US 3 in Whitefield
North end	NH 135 in Dalton
Location
Counties	Grafton, Coos
Highway system
New Hampshire Highway System Interstate U.S. State Turnpikes ← NH 141 → NH 145

The southern terminus of NH 142 is at the junction with New Hampshire Route 18 in Franconia. The highway winds north through Bethlehem and Whitefield, then turns northwest to Dalton. NH 142 runs concurrently with New Hampshire Route 116 for 3.659 miles (5.889 km) in Whitefield. The northern terminus is in Dalton at New Hampshire Route 135, the Connecticut River Road.