Find New Hampshire Interstates and Federal Highways
History of Interstates and U.S. Highways in New Hampshire
New Hampshire’s highways have been fundamental in connecting its small towns, scenic landscapes, and bustling cities. Early routes like U.S. 3 and U.S. 4 played a key role in linking the state’s northern regions to Boston and other major Northeast hubs. With the development of the Interstate Highway System, Interstates such as I-93 and I-95 became critical to both local and interstate travel.
Highways like I-93 serve as a vital north-south corridor for tourism, especially during ski season and summer vacations, when visitors flock to New Hampshire’s White Mountains and Lakes Region. I-95 is crucial for connecting the state’s Seacoast area to Massachusetts and Maine, supporting the movement of goods and the tourism industry. Meanwhile, U.S. 202 offers scenic routes through New Hampshire's countryside, making it a favorite among travelers.
New Hampshire is continuously working to modernize its highway system, with projects focusing on expanding I-93 and upgrading rural highways. Ongoing efforts aim to enhance safety, improve traffic flow, and ensure the infrastructure can meet growing demand, especially in the southern parts of the state.
Busiest and Longest Federal Interstates and U.S. Highways in New Hampshire
| Interstate or Highway | Length (mi) | Length (km) | Southern or Western Terminus | Northern or Eastern Terminus | Created |
|---|---|---|---|---|---|
| I-93 | 131 | 211 | Massachusetts Border | Vermont Border | 1957 |
| I-95 | 16 | 26 | Massachusetts Border | Maine Border | 1956 |
| I-89 | 60 | 97 | Massachusetts Border | Vermont Border | 1958 |
| I-293 | 11 | 18 | Manchester, NH | Hooksett, NH | 1961 |
| U.S. 3 | 242 | 389 | Massachusetts Border | Canada Border | 1926 |
| U.S. 4 | 106 | 171 | Vermont Border | Portsmouth, NH | 1926 |
| U.S. 202 | 55 | 89 | Hillsborough, NH | Maine Border | 1926 |
| U.S. 302 | 38 | 61 | Vermont Border | Maine Border | 1926 |
| U.S. 1 | 17 | 27 | Massachusetts Border | Maine Border | 1926 |
| U.S. 2 | 35 | 56 | Vermont Border | Maine Border | 1926 |
New Hampshire Designated Highways
New Hampshire Interstate Highway 89, I-89 N
New Hampshire Interstate Highway 89, I-89 S
New Hampshire Interstate Highway 93, I-93 N
New Hampshire Interstate Highway 93, I-93 S
New Hampshire Interstate Highway 95, I-95 N
New Hampshire Interstate Highway 95, I-95 S
New Hampshire Interstate Highway 293, I-293 N
New Hampshire Interstate Highway 293, I-293 S
New Hampshire Interstate Highway 393, I-393 E
New Hampshire Interstate Highway 393, I-393 W
New Hampshire US Highway 1, Congress St
New Hampshire US Highway 1, Daniel St
New Hampshire US Highway 1, Dutton Ave
New Hampshire US Highway 1, Lafayette Rd
New Hampshire US Highway 1, Market Sq
New Hampshire US Highway 1, Middle St
New Hampshire US Highway 1, State St
New Hampshire US Highway 1, US-1
New Hampshire US Highway 1, US-1 Byp
New Hampshire US Highway 2, Bridge St
New Hampshire US Highway 2, Gorham Hill Rd
New Hampshire US Highway 2, Main St
New Hampshire US Highway 2, Portland St
New Hampshire US Highway 2, Presidential Hwy
New Hampshire US Highway 2, US-2
New Hampshire US Highway 3, 2nd St
New Hampshire US Highway 3, Allenstown Rd
New Hampshire US Highway 3, Amherst St
New Hampshire US Highway 3, Bouton St
New Hampshire US Highway 3, Central St
New Hampshire US Highway 3, Concord St
New Hampshire US Highway 3, Court St
New Hampshire US Highway 3, Daniel Webster Hwy
New Hampshire US Highway 3, E Main St
New Hampshire US Highway 3, Elm St
New Hampshire US Highway 3, Endicott St N
New Hampshire US Highway 3, Fisherville Rd
New Hampshire US Highway 3, Henri A Burque Hwy
New Hampshire US Highway 3, Highland St
New Hampshire US Highway 3, Hooksett Rd
New Hampshire US Highway 3, Laconia Rd
New Hampshire US Highway 3, Lake Shore Rd
New Hampshire US Hampshire US Highway 3, Lake St
New Hampshire US Highway 3, Lancaster Rd
New Hampshire US Highway 3, Main St
New Hampshire US Highway 3, Manchester St
New Hampshire US Highway 3, N Main St
New Hampshire US Highway 3, N State St
New Hampshire US Highway 3, Old Route 3
New Hampshire US Highway 3, Pembroke St
New Hampshire US Highway 3, Post Office Sq
New Hampshire US Highway 3, Prospect St
New Hampshire US Highway 3, Queen City Ave
New Hampshire US Highway 3, Riverside Dr
New Hampshire US Highway 3, S Main St
New Hampshire US Highway 3, S River Rd
New Hampshire US Highway 3, Scenic View Rd
New Hampshire US Highway 3, State St
New Hampshire US Highway 3, Trooper Leslie G Lord Mem Hwy
New Hampshire US Highway 3, Twin Mountain Rd
New Hampshire US Highway 3, Union Ave
New Hampshire US Highway 3, Union St
New Hampshire US Highway 3, US-3
New Hampshire US Highway 3, US-3 N
New Hampshire US Highway 3, US-3 S
New Hampshire US Highway 3, Village St
New Hampshire US Highway 3, W Main St
New Hampshire US Highway 3, Webster St
New Hampshire US Highway 3, Weirs Blvd
New Hampshire US Highway 4, 1st NH Tpke
New Hampshire US Highway 4, Bank St
New Hampshire US Highway 4, Boston Harbor Rd
New Hampshire US Highway 4, Bridge St
New Hampshire US Highway 4, Calef Hwy
New Hampshire US Highway 4, Dartmouth College Hwy
New Hampshire US Highway 4, Depot St
New Hampshire US Highway 4, E Park St
New Hampshire US Highway 4, Hanover St
New Hampshire US Highway 4, High St
New Hampshire US Highway 4, Hoit Rd
New Hampshire US Highway 4, King St
New Hampshire US Highway 4, Main St
New Hampshire US Highway 4, Mascoma St
New Hampshire US Highway 4, Mechanic St
New Hampshire US Highway 4, Miracle Mile
New Hampshire US Highway 4, N Park St
New Hampshire US Highway 4, Old Turnpike Rd
New Hampshire US Highway 4, Piscataqua Rd
New Hampshire US Highway 4, S Park St
New Hampshire US Highway 4, Salisbury Hwy
New Hampshire US Highway 4, Seminary Hl
New Hampshire US Highway 4, US-4
New Hampshire US Highway 4, US-4 E
New Hampshire US Highway 4, US-4 W
New Hampshire US Highway 4, W Park St
New Hampshire US Highway 4A, US-4A
New Hampshire US Highway 10, US-10
New Hampshire US Highway 202, 1st NH Tpke
New Hampshire US Highway 202, Antrim Rd
New Hampshire US Highway 202, Concord St
New Hampshire US Highway 202, Contoocook Valley Rd
New Hampshire US Highway 202, Dover Rd
New Hampshire US Highway 202, Granite St
New Hampshire US Highway 202, Grove St
New Hampshire US Highway 202, Hancock Rd
New Hampshire US Highway 202, Highland St
New Hampshire US Highway 202, Hopkinton Rd
New Hampshire US Highway 202, Jaffrey Rd
New Hampshire US Highway 202, Main St
New Hampshire US Highway 202, N Main St
New Hampshire US Highway 202, Old Henniker Rd
New Hampshire US Highway 202, Peterborough St
New Hampshire US Highway 202, Pine St
New Hampshire US Highway 202, Pleasant St
New Hampshire US Highway 202, River St
New Hampshire US Highway 202, Rochester Rd
New Hampshire US Highway 202, Spaulding Turnpike Conn
New Hampshire US Highway 202, US-202
New Hampshire US Highway 202, Washington St
New Hampshire US Highway 202, Wilton Rd
New Hampshire US Highway 302, Bethlehem Rd
New Hampshire US Highway 302, Central St
New Hampshire US Highway 302, Cottage St
New Hampshire US Highway 302, Dartmouth College Hwy
New Hampshire US Highway 302, E Main St
New Hampshire US Highway 302, Eastman Rd
New Hampshire US Highway 302, Lisbon Rd
New Hampshire US Highway 302, Main St
New Hampshire US Highway 302, Meadow St
New Hampshire US Highway 302, N Main St
New Hampshire US Highway 302, Rum Hill Rd
New Hampshire US Highway 302, S Main St
New Hampshire US Highway 302, US-302
New Hampshire US Highway 302, W End Rd
New Hampshire US Highway 302, White Mountain Hwy
New Hampshire US Highway 302, White Mountain Rd
New Hampshire Interstate Highway 89, I-89 S
New Hampshire Interstate Highway 93, I-93 N
New Hampshire Interstate Highway 93, I-93 S
New Hampshire Interstate Highway 95, I-95 N
New Hampshire Interstate Highway 95, I-95 S
New Hampshire Interstate Highway 293, I-293 N
New Hampshire Interstate Highway 293, I-293 S
New Hampshire Interstate Highway 393, I-393 E
New Hampshire Interstate Highway 393, I-393 W
New Hampshire US Highway 1, Congress St
New Hampshire US Highway 1, Daniel St
New Hampshire US Highway 1, Dutton Ave
New Hampshire US Highway 1, Lafayette Rd
New Hampshire US Highway 1, Market Sq
New Hampshire US Highway 1, Middle St
New Hampshire US Highway 1, State St
New Hampshire US Highway 1, US-1
New Hampshire US Highway 1, US-1 Byp
New Hampshire US Highway 2, Bridge St
New Hampshire US Highway 2, Gorham Hill Rd
New Hampshire US Highway 2, Main St
New Hampshire US Highway 2, Portland St
New Hampshire US Highway 2, Presidential Hwy
New Hampshire US Highway 2, US-2
New Hampshire US Highway 3, 2nd St
New Hampshire US Highway 3, Allenstown Rd
New Hampshire US Highway 3, Amherst St
New Hampshire US Highway 3, Bouton St
New Hampshire US Highway 3, Central St
New Hampshire US Highway 3, Concord St
New Hampshire US Highway 3, Court St
New Hampshire US Highway 3, Daniel Webster Hwy
New Hampshire US Highway 3, E Main St
New Hampshire US Highway 3, Elm St
New Hampshire US Highway 3, Endicott St N
New Hampshire US Highway 3, Fisherville Rd
New Hampshire US Highway 3, Henri A Burque Hwy
New Hampshire US Highway 3, Highland St
New Hampshire US Highway 3, Hooksett Rd
New Hampshire US Highway 3, Laconia Rd
New Hampshire US Highway 3, Lake Shore Rd
New Hampshire US Hampshire US Highway 3, Lake St
New Hampshire US Highway 3, Lancaster Rd
New Hampshire US Highway 3, Main St
New Hampshire US Highway 3, Manchester St
New Hampshire US Highway 3, N Main St
New Hampshire US Highway 3, N State St
New Hampshire US Highway 3, Old Route 3
New Hampshire US Highway 3, Pembroke St
New Hampshire US Highway 3, Post Office Sq
New Hampshire US Highway 3, Prospect St
New Hampshire US Highway 3, Queen City Ave
New Hampshire US Highway 3, Riverside Dr
New Hampshire US Highway 3, S Main St
New Hampshire US Highway 3, S River Rd
New Hampshire US Highway 3, Scenic View Rd
New Hampshire US Highway 3, State St
New Hampshire US Highway 3, Trooper Leslie G Lord Mem Hwy
New Hampshire US Highway 3, Twin Mountain Rd
New Hampshire US Highway 3, Union Ave
New Hampshire US Highway 3, Union St
New Hampshire US Highway 3, US-3
New Hampshire US Highway 3, US-3 N
New Hampshire US Highway 3, US-3 S
New Hampshire US Highway 3, Village St
New Hampshire US Highway 3, W Main St
New Hampshire US Highway 3, Webster St
New Hampshire US Highway 3, Weirs Blvd
New Hampshire US Highway 4, 1st NH Tpke
New Hampshire US Highway 4, Bank St
New Hampshire US Highway 4, Boston Harbor Rd
New Hampshire US Highway 4, Bridge St
New Hampshire US Highway 4, Calef Hwy
New Hampshire US Highway 4, Dartmouth College Hwy
New Hampshire US Highway 4, Depot St
New Hampshire US Highway 4, E Park St
New Hampshire US Highway 4, Hanover St
New Hampshire US Highway 4, High St
New Hampshire US Highway 4, Hoit Rd
New Hampshire US Highway 4, King St
New Hampshire US Highway 4, Main St
New Hampshire US Highway 4, Mascoma St
New Hampshire US Highway 4, Mechanic St
New Hampshire US Highway 4, Miracle Mile
New Hampshire US Highway 4, N Park St
New Hampshire US Highway 4, Old Turnpike Rd
New Hampshire US Highway 4, Piscataqua Rd
New Hampshire US Highway 4, S Park St
New Hampshire US Highway 4, Salisbury Hwy
New Hampshire US Highway 4, Seminary Hl
New Hampshire US Highway 4, US-4
New Hampshire US Highway 4, US-4 E
New Hampshire US Highway 4, US-4 W
New Hampshire US Highway 4, W Park St
New Hampshire US Highway 4A, US-4A
New Hampshire US Highway 10, US-10
New Hampshire US Highway 202, 1st NH Tpke
New Hampshire US Highway 202, Antrim Rd
New Hampshire US Highway 202, Concord St
New Hampshire US Highway 202, Contoocook Valley Rd
New Hampshire US Highway 202, Dover Rd
New Hampshire US Highway 202, Granite St
New Hampshire US Highway 202, Grove St
New Hampshire US Highway 202, Hancock Rd
New Hampshire US Highway 202, Highland St
New Hampshire US Highway 202, Hopkinton Rd
New Hampshire US Highway 202, Jaffrey Rd
New Hampshire US Highway 202, Main St
New Hampshire US Highway 202, N Main St
New Hampshire US Highway 202, Old Henniker Rd
New Hampshire US Highway 202, Peterborough St
New Hampshire US Highway 202, Pine St
New Hampshire US Highway 202, Pleasant St
New Hampshire US Highway 202, River St
New Hampshire US Highway 202, Rochester Rd
New Hampshire US Highway 202, Spaulding Turnpike Conn
New Hampshire US Highway 202, US-202
New Hampshire US Highway 202, Washington St
New Hampshire US Highway 202, Wilton Rd
New Hampshire US Highway 302, Bethlehem Rd
New Hampshire US Highway 302, Central St
New Hampshire US Highway 302, Cottage St
New Hampshire US Highway 302, Dartmouth College Hwy
New Hampshire US Highway 302, E Main St
New Hampshire US Highway 302, Eastman Rd
New Hampshire US Highway 302, Lisbon Rd
New Hampshire US Highway 302, Main St
New Hampshire US Highway 302, Meadow St
New Hampshire US Highway 302, N Main St
New Hampshire US Highway 302, Rum Hill Rd
New Hampshire US Highway 302, S Main St
New Hampshire US Highway 302, US-302
New Hampshire US Highway 302, W End Rd
New Hampshire US Highway 302, White Mountain Hwy
New Hampshire US Highway 302, White Mountain Rd