U.S. Route 1 in New Hampshire

U.S. Route 1
Route information
Maintained by NHDOT
Length:	16.88 mi[1] (27.17 km)
Existed:	1926 – present
Major junctions
South end:	US 1 in Salisbury, MA
	NH 101 in Hampton US 1 Byp. in Portsmouth
North end:	US 1 in Kittery, ME
Highway system
United States Numbered Highways List • Bannered • Divided • Replaced New Hampshire Routes ← I-393 NH 1A →

In the U.S. state of New Hampshire, U.S. Route 1 is a major north–south state highway through Hampton and Portsmouth. It lies between Interstate 95 and New Hampshire Route 1A.

Contents 1 Route description 2 History 3 Junction list 4 Suffixed routes 4.1 New Hampshire Route 1A 4.2 New Hampshire Route 1B 5 References 6 See also 6.1 Related routes

Route description

History

US 1 follows the historic Lafayette Road through New Hampshire, named after the Marquis de Lafayette, who passed over the road in 1825.^[2]

Junction list

The entire route is in Rockingham County.

Location	Mile	Destinations	Notes
Seabrook	0.00	US 1	US-1 continues southbound into Massachusetts.
		NH 107 north	Southern terminus of NH Route 107. To Interstate 95.
Hampton Falls		NH 84 west	Eastern terminus of NH Route 84.
		NH 88 west	Eastern terminus of NH Route 88.
Hampton		NH 101	Interchange. Northbound exits. Northbound entrance from NH Route 101 west. Southbound entrance from NH Route 101 east.
		NH 27
North Hampton		NH 151 north	Southern terminus of NH Route 151.
		NH 111
Portsmouth		US 1 Byp. north	Southern terminus of US-1 Bypass.
		NH 33 west	Eastern terminus of NH Route 33.
		NH 1A	Northern terminus of NH Route 1A.
		NH 1B	Northern terminus of NH Route 1B.
	16.88	US 1	US-1 continues northbound into Maine.

Suffixed routes

New Hampshire Route 1A

New Hampshire Route 1A
Location:	Seabrook-Portsmouth
Length:	18.32 mi[3] (29.48 km)

New Hampshire Route 1A is an 18.32-mile (29.48 km) long state highway located in southeast New Hampshire. The route runs along the Atlantic coastline from the Massachusetts border north to Rye, then turns toward downtown Portsmouth. The southern terminus is at the Massachusetts state line in Seabrook at the junction with Massachusetts' Route 1A. The northern terminus is at the junction with U.S. Route 1 in Portsmouth. For the length of the road’s run along the shore, its local name is Ocean Boulevard. In Portsmouth, it is known as Miller Avenue and Sagamore Avenue.

New Hampshire Route 1B

New Hampshire Route 1B
Location:	Portsmouth
Length:	4.89 mi[3] (7.87 km)

New Hampshire Route 1B (abbreviated NH 1B) is a 4.89-mile (7.87 km) long state highway in southeast New Hampshire.

The southern terminus is at New Hampshire Route 1A in Portsmouth, near the city's southeastern boundary. The road loops around over Great Island in the Piscataqua River through New Castle and then back into Portsmouth. The northern terminus is at the junction with U.S. Route 1 near the Maine state line.

References

See also

Related routes

• U.S. Route 1 Bypass, a mostly-freeway bypass of downtown Portsmouth
• New England Interstate Route 1, the designation of US-1 prior to 1926

U.S. Route 1
Previous state: Massachusetts	New Hampshire	Next state: Maine