U.S. Route 1 in New Hampshire

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

This article is about the section of U.S. Route 1 in New Hampshire. For the entire route, see U.S. Route 1.

U.S. Route 1
US 1 highlighted in red
Route information
Maintained by NHDOT
Length17.044 mi[1] (27.430 km)
Existed1926–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
Location
CountiesRockingham
Highway system
← I-393NH 1A →
← NH 1AUS 2 →

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]

For a period of time during the 1950s, a segment of US 1 in Massachusetts and New Hampshire was routed onto what later became Interstate 95 (I-95). Roadway that had been US 1 was designated as Massachusetts Route 17 (MA 17) from Danvers to Salisbury,[3] and New Hampshire Route 17 (NH 17) for a short distance in Seabrook.[4] Once the I-95 designation was adopted, MA 17 and NH 17 were restored to being US 1.

Memorial Bridge replacement
The old Memorial Bridge in Portsmouth, New Hampshire, which carried U.S. Route 1 across the Piscataqua River before its closure in July 2011. It was replaced by a newer drawbridge which opened in August 2013.

The original Memorial Bridge, which formerly carried US 1 over the Piscataqua River between New Hampshire and Maine, was closed to motorists in July 2011 due to numerous safety and structural concerns. This was a permanent closure following two instances in 2009 and 2010 when the bridge was closed for emergency repairs. The bridge was, however, left open to pedestrians and bicyclists, as it was the only of the three river bridges allowing for these methods of travel. On January 9, 2012, the bridge was closed to pedestrians and cyclists as well. The middle lift section was removed on February 8, leaving a 300 foot (91 m) gap in US 1.

Over the next two years, the bridge was demolished and removed, and a new drawbridge was constructed in its place. In the interim, access to US 1 on each side of the gap was facilitated by either the Sarah Mildred Long Bridge, which carries US 1 Bypass, or the Piscataqua River Bridge which carries I-95. The New Hampshire Department of Transportation operated hourly shuttle service between Portsmouth and Kittery while the new bridge was constructed.

The new bridge was officially dedicated at a ceremony on the New Hampshire side of the span just before noon on August 8, 2013. Former Portsmouth Mayor Eileen Foley cut the red ribbon, 90 years after she performed the same honors for the original span in 1923 when she was five years old.[5] The bridge initially opened to only pedestrians and bicyclists. The new bridge—constructed over two previously existing piers—opened to vehicular traffic at 2:00 p.m. first with southbound traffic (Maine to New Hampshire), then northbound. Finishing work on the bridge was completed in late 2013.

Major intersections

The entire route is in Rockingham County. [1][6]

Location[1][6]mi[1][6]kmDestinationsNotes
Seabrook0.0000.000 US 1 south (Lafayette Road) – Salisbury, NewburyportContinuation into Massachusetts
1.4662.359 NH 107 north to I-95 – Kingston, Boston, MASouthern terminus of NH 107
Hampton Falls3.0824.960 NH 84 west (Kensington Road) – KensingtonEastern terminus of NH 84
3.1215.023 NH 88 west (Exeter Road) – ExeterEastern terminus of NH 88
Hampton4.8057.733 NH 101 to I-95 / NH 1A – Exeter, Manchester, Hampton BeachInterchange
5.4078.702 NH 101E east (Winnacunnet Road)Western terminus of NH 101E
5.6759.133 NH 27 (Exeter Road/High Street) – Exeter, Hampton Beach
6.95711.196 NH 151 north (Post Road) – GreenlandSouthern terminus of NH 151.
North Hampton7.99612.868 NH 111 (Atlantic Avenue) – Exeter, Rye Beach
Portsmouth14.66223.596 US 1 Byp. north / I-95 / US 4 / NH 16 – Dover, MaineSouthern terminus of US 1 Bypass
15.23224.514 NH 33 west (Middle Road)Eastern terminus of NH 33 (unsigned)
15.97625.711 NH 1A south (Miller Avenue)Northern terminus of NH 1A (unsigned)
16.40726.405 NH 1B south (Marcy Street) – New CastleNorthern terminus of NH 1B (unsigned)
16.662–
17.044		26.815–
27.430		Memorial Bridge over Piscataqua River
17.04427.430 US 1 north – KitteryContinuation into Maine
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Auxiliary routes

U.S. Route 1 Bypass

U.S. Route 1 Bypass
LocationPortsmouth
Length4.3 mi[7] (6.9 km)

U.S. Route 1 Bypass is a 4.3-mile (6.9 km) bypass of US 1 in Portsmouth and Kittery, Maine. The route runs for 2.7 miles (4.3 km) in New Hampshire, and is mostly a four-lane divided semi-limited access freeway, although two four-way traffic signals are present south of the Portsmouth traffic circle. The southern terminus is at US 1 (Lafayette Road) just south of downtown. The highway continues northwest to the traffic circle, where it then turns northeast. US 1 Bypass crosses the Sarah Mildred Long Bridge and continues into Kittery, Maine.

New Hampshire Route 1A
Main article: New Hampshire Route 1A

New Hampshire Route 1A
LocationSeabrook-Portsmouth
Length18.32 mi[7] (29.48 km)

New Hampshire Route 1A is an 18.32-mile (29.48 km) auxiliary of US 1 which runs along the Atlantic coastline. It runs from the Massachusetts border north to Rye, then turns toward downtown Portsmouth. The southern terminus of NH 1A is at the state line in Seabrook where it continues south as Massachusetts Route 1A. The northern terminus is at the junction with US 1 (Lafayette Road) 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
LocationPortsmouth
Length4.808 mi[1] (7.738 km)

New Hampshire Route 1B is a 4.89-mile (7.87 km) auxiliary of US 1 serving the town of New Castle.

The southern terminus is at NH 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 downtown Portsmouth. The northern terminus is at the junction with US 1 at Prescott Park, near the Maine state line. The highway is signed north-south, but forms a half-loop for most of its route.

Due to US 1 being routed onto the Memorial Bridge adjacent to the intersection with NH 1B, traffic from NH 1B must loop around State Street and Harbor Place to access US 1 in either direction. Harbor Place defaults onto Daniel Street, which carries US 1 south into Market Square. A hard left onto Wight Avenue will cross over to US 1 north to Maine. Southbound traffic on US 1 must use Chapel and State Streets to access NH 1B.

Junction list

The entire route is in Rockingham County. [1][6]

Location[1][6]mi[1][6]kmDestinationsNotes
Portsmouth0.0000.000 NH 1A (Sagamore Avenue) – Rye, PortsmouthSouthern terminus of NH 1B
4.8087.738 US 1 (State Street / Daniel Street) – Portsmouth, Kittery, MENorthern terminus of NH 1B;
access is via intersecting streets (see above)
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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See also
  • 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

References
  1. Bureau of Planning & Community Assistance (February 20, 2015). "NH Public Roads". Concord, New Hampshire: New Hampshire Department of Transportation. Retrieved April 7, 2015.
  2. Langdon B. Parsons, History of the Town of Rye, New Hampshire, from Its Discovery and Settlement to December 31, 1903, 1905, p. 203
  3. "Mt. Ann Park Reservation in West Gloucester". The Boston Globe. June 3, 1956. p. 92. Retrieved April 11, 2020 – via newspapers.com.
  4. "(advertisement)". The Portsmouth Herald. Portsmouth, New Hampshire. January 10, 1956. p. 5. Retrieved April 11, 2020 – via newspapers.com.
  5. Haas, Kimberly (February 22, 2016). "Ex-Portsmouth Mayor Eileen Foley dies; city, state officials mourn". New Hampshire Union Leader. Archived from the original on February 23, 2016. Retrieved March 6, 2016.
  6. Bureau of Planning & Community Assistance (April 3, 2015). "Nodal Reference 2015, State of New Hampshire". New Hampshire Department of Transportation. Retrieved April 7, 2015.
  7. New Hampshire Routes 1-25
KML is from Wikidata
U.S. Route 1
Previous state:
Massachusetts		 New Hampshire Next state:
Maine
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