New Hampshire Highway System

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Standard marker for New Hampshire Routes, featuring the Old Man of the Mountain

The New Hampshire Highway System is the public roads system of the U.S. state of New Hampshire containing approximately 17,029 miles maintained by the New Hampshire Department of Transportation. All public roads in the state are called "highways", thus there is no technical distinction between a "road" or a "highway" in New Hampshire.

1 State Highways
- 1.1 Turnpike System
- 1.2 National Highway System
2 Classification of state highways
3 Numbered State Highways
4 Unnumbered State Highways
5 See also
6 External links

[edit] State Highways

The state maintains 4,814 miles of roads, of which 2,567 miles are numbered routes and 1,465 miles are unnumbered roadways making up the State’s secondary roadway system. The state has 557 miles of primary highways, which it defines as highways that "connect population centers, other NHS routes within the state, and other NHS routes in the surrounding states: Vermont, Maine, and Massachusetts." The remaining 12,215 miles of roads are maintained typically by the towns and cities traversed by these roads.

Highways assigned a number by the NHDOT are officially known as "New Hampshire Route X", often abbreviated "NH Route X" or simply "Route X".

Many minor state highways are not assigned numbers, only local names.

[edit] Turnpike System

Main article: New Hampshire Turnpike System

The NHDOT Bureau of Turnpikes is responsible for maintenance of the public toll roads in New Hampshire:

Everett Turnpike or Central Turnpike (partly U.S. Route 3, Interstate 293 and Interstate 93)
Eastern Turnpike which is made up of the following two turnpikes:
- Blue Star Turnpike (Interstate 95)
- Spaulding Turnpike (NH Route 16 and partly U.S. Route 4)

[edit] National Highway System

Main article: National Highway System (United States)

782 miles of the state maintained roads, are a part of the National Highway System (NHS). Of the NHS roads in the state, 225 miles are Interstate highways (35 miles of which are also on the New Hampshire Turnpike System; 52 miles of non-interstate turnpike highways; and 505 miles of non-interstate and non-turnpike highways.

[edit] Classification of state highways

New Hampshire RSA 229:5 Classification. sets out the seven different classes of highways in the state:

Class I – all portions of the turnpikes and the national system of interstate and defense highways, and all existing or proposed highways on the primary state highway system, excepting all portions of highways within the compact sections of the cities and towns listed in RSA 229:5, V., which aren't part of the state or national turnpike system or are defense highways
Class II – all existing or proposed highways on the secondary state highway system, excepting all portions of such highways within the compact sections of the cities and towns listed in RSA 229:5, V.
Class III – all recreational roads leading to, and within, state reservations designated by the General Court
Class III-a – boating access highways from any existing highway to any public water in this state.
Class IV – all highways within the compact sections of cities and towns listed in RSA 229:5, V., which are not Class I or II highways
Class V – all other traveled highways which a town has the duty to maintain regularly and shall be known as town roads
Class VI – all other existing public ways, including all highways discontinued as open highways and made subject to gates and bars, except Class III-a roads, and all highways which have not been maintained and repaired by the town for travel thereon for 5 or more successive years

Under RSA 229:5, V. the Commissioner of Transportation may establish compact sections in the following cities and towns:

[edit] Numbered State Highways

1-27	28-105	106-127	128-999	Other Routes
U.S. Route 1 U.S. Route 1 Bypass NH Route 1A NH Route 1B U.S. Route 2 U.S. Route 3 U.S. 3 Business NH Route 3A U.S. Route 4 NH Route 4 NH Route 4A NH Route 9 NH Route 9A NH Route 10 NH Route 10A NH Route 11 NH Route 11A NH Route 11B NH Route 11C NH Route 11D NH Route 12 NH Route 12A NH Route 13 NH Route 16 NH Route 16A NH Route 16B NH Route 18 NH Route 25 NH Route 25A NH Route 25B NH Route 25C NH Route 26 NH Route 27	NH Route 28 NH Route 28A NH Route 28 Bypass NH Route 31 NH Route 32 NH Route 33 NH Route 38 NH Route 41 NH Route 43 NH Route 45 NH Route 47 NH Route 49 NH Route 63 NH Route 75 NH Route 77 NH Route 78 NH Route 84 NH Route 85 NH Route 87 NH Route 88 Interstate 89 Interstate 93 Interstate 95 NH Route 97 NH Route 101 NH 101 Business NH Route 101A NH 101A Bypass NH Route 101E NH Route 102 NH Route 103 NH Route 103A NH Route 103B NH Route 104	NH Route 106 NH Route 107 NH Route 107A NH Route 108 NH Route 109 NH Route 109A NH Route 110 NH Route 110A NH Route 110B NH Route 111 NH Route 111A NH Route 112 NH Route 113 NH Route 113A NH Route 113B NH Route 114 NH Route 114A NH Route 115 NH Route 115A NH Route 116 NH Route 117 NH Route 118 NH Route 119 NH Route 120 NH Route 121 NH Route 121A NH Route 122 NH Route 123 NH Route 123A NH Route 124 NH Route 125 NH Route 126 NH Route 127	NH Route 128 NH Route 129 NH Route 130 NH Route 132 NH Route 135 NH Route 136 NH Route 137 NH Route 140 NH Route 141 NH Route 142 NH Route 145 NH Route 149 NH Route 150 NH Route 151 NH Route 152 NH Route 153 NH Route 155 NH Route 155A NH Route 156 NH Route 171 NH Route 175 NH Route 175A U.S. Route 202 NH Route 202A NH Route 236 NH Route 286 Interstate 293 U.S. Route 302 U.S. 302 Business Interstate 393	Unnumbered Routes Everett Turnpike Spaulding Turnpike Other state's route numbers posted in New Hampshire: Route 105 (Vermont) Route 110 (Maine) Route 113 (Maine) Former Numbered Routes NH Route 3B U.S. Route 5 NH Route 51 NH Route 86 I-89 Business Loop NH Route 101B NH Route 101C NH Route 101D Interstate 193