New Hampshire Route 9

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New Hampshire Route 9 marker

New Hampshire Route 9
Map of southern New Hampshire with NH 9 highlighted in red
Route information
Maintained by NHDOT
Length: 110.00 mi[1] (177.03 km)
Existed: 1925 – present
Major junctions
West end: VT 9 in Brattleboro, VT

NH 10 / NH 12 / NH 101 in Keene
US 202 in Hillsborough
I‑89 in Hopkinton
US 3 / US 202 in Concord
I‑93 in Concord
I‑393 / US 4 / US 202 in Pembroke
US 4 / NH 43 in Northwood
US 202 in Barrington
Spaulding Turnpike / NH 16 in Dover

NH 4 / NH 108 in Dover
East end: SR 9 in Berwick, ME
Counties: Cheshire, Hillsborough, Merrimack, Rockingham, Strafford
Highway system
NH 4 NH 10

New Hampshire Route 9 (abbreviated NH 9) is a 110.00-mile-long (177.03 km) state highway located in southern New Hampshire, United States. It runs across the state from west to east and is a multi-state route with Vermont and Maine, part of 1920s-era New England Interstate Route 9.

The western terminus of NH 9 is at the Vermont state line in Chesterfield, where it connects to Vermont Route 9. Its eastern terminus is at the Maine state line in Somersworth, where it connects to Maine State Route 9.

Much of NH 9 (about 45 mi or 72 km) runs concurrently with U.S. Route 202 on its journey across the state.


New England 9.svg

NH 9 as it exists today was originally conceived as part of the New England Interstate system. It was first designated as New England Interstate Route 9 (NEI 9) in 1922, a designation which covered all of modern Vermont Route 9, NH 9, and Maine State Route 9 as far as Wells (that route was extended in 1934), a distance of 167 miles (269 km). The New England Interstate system declined in the mid 1920s in favor of the modern U.S. Numbered Highways, and all of NEI 9 was redesignated as state highways retaining the number 9.

NH 9 between Henniker and Hopkinton (a section entirely concurrent with US 202) is also concurrent with part of former New England Interstate Route 32A. The NEI 32A designation was supplanted in the mid 1930s by US 202 between Henniker and Hopkinton, and also by modern NH 103 between Hopkinton and Bradford.

Route description[edit]

Chesterfield to Concord[edit]

NH 9 begins in the west where VT 9 crosses the Connecticut River from Brattleboro, Vermont, into Chesterfield, New Hampshire. The highway meanders its way through the large town (by area) en route to Keene, home of Keene State College. NH 9 enters the southern part of the city and intersects with the triplex of NH 10, NH 12, and NH 101, the latter of which has its western terminus here. NH 9 joins NH 10 and NH 12, bypassing downtown Keene to the west. After about a mile, NH 12 splits off to the northwest. Two miles later, NH 10 follows suit and NH 9 continues northeast, crossing through parts of Roxbury, Sullivan, and Nelson en route to Stoddard, where NH 9 intersects with NH 123. The two routes overlap for about a mile before NH 123 splits northwest, while NH 9 continues east. The highway passes along the northern edge of Antrim, intersecting and overlapping with NH 31. The two routes cross into the town of Hillsborough, where NH 31 splits off to the northwest and NH 9 becomes a semi-limited access highway (not quite up to super-two standards due to a number of at-grade intersections). One mile later, NH 9 interchanges with U.S. Route 202 and the two routes form the first of two lengthy concurrencies. US 202 and NH 9 bypass downtown Hillsborough to the north, as well as the neighboring town of Henniker, before entering Hopkinton. US 202 and NH 9 intersect NH 127 near the town line and continue east to one of two partial interchanges with Interstate 89. The first interchange allows the following movements: US 202/NH 9 east to I-89 south, US 202/NH 9 west to I-89 north, I-89 north to US 202/NH 9 west, and I-89 south to both directions of US 202/NH 9. The highway continues into town, intersecting the southern terminus of NH 103 (a secondary highway paralleling I-89 north) before intersecting I-89 again, with southbound-only access to the Interstate highway. US 202 and NH 9 enter the city of Concord from the west and roughly parallel I-89 until reaching downtown. The two highways intersect the northern terminus of NH 13 before meeting U.S. Route 3 in downtown. US 202 and NH 9 turn north onto US 3 for about six blocks before NH 9 turns east onto Loudon Road, intersecting with Interstate 93 (US 202 continues along US 3 to meet Interstate 393 just to the north). NH 9 runs as Loudon Road parallel to I-393 (which also carries US 4 and US 202), with access possible via NH 132 (East Side Drive) and NH 106 (Sheep Davis Road - NH 106 is also the route to New Hampshire Motor Speedway, which lies about 9 miles (14 km) to the north). NH 9 crosses underneath I-393 and enters the extreme northern tip of Pembroke.

Pembroke to Somersworth[edit]

Straight-line map of New Hampshire Route 9

Upon crossing into Pembroke, I-393 ends and merges with NH 9. US 202 rejoins NH at this point, as does US 4, and the triplex of routes immediately crosses into Chichester, followed by Epsom. The highway intersects with NH 28 at the Epsom Traffic Circle and continues eastward. Just feet before crossing into Northwood, NH 107 intersects with US 4, US 202, and NH 9, forming a four-route concurrency. After two miles, NH 107 splits off to the north while US 4, US 202, and NH 9 continue into Northwood. In the eastern part of town, the highway reaches an intersection with NH 43. At this intersection, US 202 and NH 9 split off US 4 towards Rochester, with US 4 continuing southeast towards Durham and Portsmouth. US 202 and NH 9 meet the western terminus of NH 202A (an alternate of US 202 toward Rochester), nick the extreme northwestern corner of Nottingham, and enter Barrington. In Barrington, US 202 and NH 9 split for good: US 202 heads northeast towards Rochester, and NH 9 turns southeast, crossing NH 125 en route to the city of Dover. NH 9 enters Dover from the southwest and intersects the northern terminus of NH 155, then turns northeast and immediately interchanges with the Spaulding Turnpike (NH 16) at exit 8. NH 9 continues into the heart of Dover and meets up with NH 108. (NH 4 has its western terminus here as well.) NH 9 and NH 108 traverse downtown Dover, with NH 4 splitting off towards Rollinsford along the way. The two routes split at the end of Central Avenue, north of downtown. (Access to the Spaulding Turnpike exit 9 is available at this intersection.) NH 9 turns northeast and enters the city of Somersworth. The road continues towards the Salmon Falls River at the heart of the city and intersects NH 236. NH 9 and NH 236 are cosigned along Washington, Main, and Market streets in the downtown area. Finally, NH 9 crosses the river into Berwick, Maine, and becomes Maine State Route 9. NH 236 ends at the border and is not directly connected to Maine State Route 236, but the two are linked via the initial 0.2 miles of SR 9.

Junction list[edit]

County Location mi km Destinations Notes
Cheshire Chesterfield 0.0 0.0 VT 9 (Chesterfield Road) – Brattleboro Vermont-New Hampshire state line
5.4 8.7 NH 63 – Westmoreland, Chesterfield
6.2 10.0 NH 9A (South Shore Road) – Spofford Western terminus of NH 9A
8.1 13.0 NH 9A – Spofford Eastern terminus of NH 9A
Keene 14.3 23.0 NH 10 / NH 12 south / NH 101 – Peterborough, Winchester Southern terminus of NH 9/10/12 concurrency
Western terminus of NH 101
15.7 25.3 NH 12 north to NH 12A – Walpole Interchange; northern terminus of NH 9/12 concurrency
18.3 29.5 NH 10 north (Gilsum Road) – Newport Northern terminus of NH 9/10 concurrency
Roxbury No major junctions
Sullivan No major junctions
Nelson No major junctions
Stoddard 30.4 48.9 NH 123 south – Hancock, Peterborough Southern terminus of concurrency
31.5 50.7 NH 123 north – Stoddard Northern terminus of concurrency
Hillsborough Antrim 37.5 60.4 NH 31 south (Clinton Road) – Antrim Southern terminus of concurrency
Hillsborough 41.2 66.3 NH 31 north (2nd New Hampshire Turnpike) – Hillsborough Upper Village, Washington Northern terminus of concurrency
42.8 68.9 US 202 south (Antrim Road) to NH 149 – Peterborough Interchange; western terminus of US 202/NH 9 concurrency
Merrimack Henniker 49.8 80.1 NH 114 (Bradford Road/Maple Street) – Henniker, Bradford Interchange
Hopkinton 53.6 86.3 NH 127 (Maple Street) – West Hopkinton, Contoocook Southern terminus of NH 127
57.3 92.2 I‑89 to I‑93 / US 4 – Concord, Seacoast, Contoocook, Warner, Lebanon I-89 exit 5, partial interchange
Access to I-89 south only from US 202/NH 9 east
Access to I-89 north only from US 202/NH 9 west
Access to US 202/NH 9 west only from I-89 north
58.4 94.0 NH 103 (Hopkinton Road) – Contoocook, Warner Eastern terminus of NH 103
59.3 95.4 I‑89 south – Bow I-89 exit 4 (northbound exit only)
Concord 65.7 105.7 NH 13 (South Street) Northern terminus of NH 13
65.9 106.1 US 3 south (South Main Street) Southern terminus of US 3/202/NH 9 concurrency
66.2 106.5 US 3 north / US 202 east (North Main Street) Northern terminus of US 3/NH 9 concurrency
Eastern terminus of US 202/NH 9 concurrency
66.4 106.9 I‑93 (Everett Turnpike/Styles Bridges Highway) to I‑89 / I‑393 – Manchester, Lebanon, Plymouth, Portsmouth I-93 exit 14, northern terminus of Everett Turnpike
67.9 109.3 NH 132 (East Side Drive) Southern terminus of NH 132
70.0 112.7 NH 106 (Sheep Davis Road) to I‑393 – Loudon, Pembroke
Pembroke 71.1 114.4 I‑393 / US 4 / US 202 west – Concord Eastern terminus of I-393; westbound exit/eastbound entrance only
Western terminus of US 4/202/NH 9 concurrency
Epsom 76.3 122.8 NH 28 (Suncook Valley Highway) – Pittsfield, Allenstown Epsom Traffic Circle
79.9 128.6 NH 107 south (North Road) – Deerfield, Raymond Western terminus of concurrency
Rockingham Northwood 81.8 131.6 NH 107 north (School Street) – Pittsfield, Northwood Narrows Eastern terminus of concurrency
87.7 141.1 US 4 east (1st New Hampshire Turnpike) – Lee, Durham, Portsmouth
NH 43 (Mountain Avenue) – Deerfield, Candia
Eastern terminus of US 4/NH 9 concurrency
Northern terminus of NH 43
88.0 141.6 NH 202A (Strafford Road) – Bow Lake, Strafford Western terminus of NH 202A
Strafford Barrington 92.6 149.0 US 202 east – Rochester Eastern terminus of US 202/NH 9 concurrency
93.9 151.1 NH 126 (Church Street) – Center Strafford, Barnstead Eastern terminus of NH 126
96.7 155.6 NH 125 (Calef Highway) – Rochester, Epping
Dover 102.6 165.1 NH 155 (Knox Marsh Road) – Durham Eastern terminus of NH 155
102.8 165.4 Spaulding Turnpike / NH 16 – Portsmouth, Somersworth, Rochester Spaulding Turnpike exits 8E-W
103.7 166.9 NH 108 south (Central Ave.)
NH 4
Southern terminus of NH 4/9/108 concurrency
Western terminus of NH 4
104.4 168.0 NH 4 east (Portland Avenue) Northern terminus of NH 4/9 concurrency
106.5 171.4 NH 108 north (New Rochester Road) – Rochester Northern terminus of concurrency.
To Spaulding Turnpike.svgNH Route 16.svg Spaulding Turnpike (NH 16) exit 9 via Indian Brook Road
Somersworth 109.2 175.7 NH 236 west (West High Street) – Rochester Western terminus of concurrency
109.7 176.5 SR 9 to SR 236 – Berwick
NH 236
Maine-New Hampshire state line
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Suffixed routes[edit]

New Hampshire Route 9A[edit]

New Hampshire Route 9A
Location: Chesterfield
Length: 2.32 mi[2] (3.73 km)

New Hampshire Route 9A is a 2.32-mile (3.73 km) secondary road in Chesterfield, not far from the Vermont border, and is the lone auxiliary route of NH 9. Signed east-west, the short route terminates at NH 9 at both ends and provides access to Spofford Lake from NH 9.


  1. ^ New Hampshire Routes 1-25
  2. ^ New Hampshire Department of Transportation (2005). "NHDOT Route Log System" (Login required). Retrieved December 18, 2010. 

External links[edit]