The deadliest roads in New Hampshire
I-93 had the most fatal crashes of any numbered road in New Hampshire from 2015 to 2024: 82, with 86 deaths. The 40 roads listed held 58% of all fatal crashes in New Hampshire from 2015 to 2024; 4 are interstates, 6 US routes, 30 state highways.
99 numbered roads in New Hampshire recorded a fatal crash in those years; the 40 with 5 or more are ranked below, and 2 have a page of their own. All fatal crashes in New Hampshire.
Every numbered road in New Hampshire, ranked by fatal crashes
| Road | Kind | Fatal crashes | Deaths | 2022 to 2024 | Counties with the most | |
|---|---|---|---|---|---|---|
| 1 | I-93 | Interstate | 82 | 86 | 27 | Merrimack, Grafton, Rockingham |
| 2 | US 3 | US route | 52 | 59 | 22 | Merrimack, Belknap, Coos |
| 3 | State Highway 16 | State highway | 43 | 49 | 13 | Carroll, Strafford, Coos |
| 4 | State Highway 101 | State highway | 39 | 44 | 11 | Rockingham, Hillsborough, Cheshire |
| 5 | State Highway 28 | State highway | 36 | 38 | 13 | Merrimack, Rockingham, Hillsborough |
| 6 | State Highway 11 | State highway | 33 | 38 | 11 | Belknap, Sullivan, Strafford |
| 7 | State Highway 125 | State highway | 28 | 29 | 9 | Strafford, Rockingham |
| 8 | State Highway 9 | State highway | 21 | 26 | 7 | Cheshire, Hillsborough, Merrimack |
| 9 | I-89 | Interstate | 19 | 22 | 4 | Merrimack, Grafton, Sullivan |
| 10 | State Highway 106 | State highway | 19 | 21 | 7 | Merrimack, Belknap |
| 11 | State Highway 3A | State highway | 19 | 20 | 9 | Merrimack, Hillsborough, Grafton |
| 12 | US 202 | US route | 19 | 20 | 6 | Strafford, Hillsborough, Merrimack |
| 13 | US 4 | US route | 19 | 20 | 6 | Strafford, Rockingham, Merrimack |
| 14 | State Highway 111 | State highway | 19 | 19 | 8 | Rockingham, Hillsborough |
| 15 | State Highway 12 | State highway | 18 | 18 | 10 | Cheshire, Sullivan |
| 16 | I-95 | Interstate | 16 | 16 | 5 | Rockingham |
| 17 | I-293 | Interstate | 14 | 14 | 5 | Hillsborough |
| 18 | State Highway 10 | State highway | 13 | 15 | 4 | Cheshire, Sullivan, Grafton |
| 19 | US 302 | US route | 11 | 12 | 6 | Grafton, Carroll |
| 20 | State Highway 107 | State highway | 10 | 11 | 2 | Rockingham, Belknap, Merrimack |
| 21 | State Highway 102 | State highway | 10 | 10 | 3 | Rockingham, Hillsborough |
| 22 | State Highway 4 | State highway | 9 | 12 | 1 | Merrimack, Strafford, Grafton |
| 23 | State Highway 112 | State highway | 8 | 8 | 2 | Grafton, Carroll, Sullivan |
| 24 | State Highway 25 | State highway | 8 | 8 | 3 | Carroll, Grafton |
| 25 | US 1 | US route | 8 | 8 | 5 | Rockingham |
| 26 | US 2 | US route | 7 | 7 | 3 | Coos |
| 27 | State Highway 108 | State highway | 6 | 8 | 1 | Rockingham, Strafford |
| 28 | State Highway 31 | State highway | 6 | 7 | 4 | Hillsborough |
| 29 | State Highway 101A | State highway | 6 | 6 | 4 | Hillsborough |
| 30 | State Highway 109 | State highway | 6 | 6 | 5 | Carroll |
| 31 | State Highway 114 | State highway | 6 | 6 | 2 | Hillsborough, Merrimack |
| 32 | State Highway 153 | State highway | 6 | 6 | 1 | Carroll, Strafford |
| 33 | State Highway 202 | State highway | 6 | 6 | 0 | Hillsborough, Merrimack, Cheshire |
| 34 | State Highway 123 | State highway | 5 | 7 | 1 | Hillsborough, Cheshire |
| 35 | State Highway 12A | State highway | 5 | 7 | 2 | Sullivan, Cheshire |
| 36 | State Highway 13 | State highway | 5 | 7 | 2 | Hillsborough, Merrimack |
| 37 | State Highway 302 | State highway | 5 | 6 | 0 | Carroll, Coos, Grafton |
| 38 | State Highway 119 | State highway | 5 | 5 | 3 | Cheshire |
| 39 | State Highway 128 | State highway | 5 | 5 | 3 | Hillsborough, Rockingham |
| 40 | State Highway 77 | State highway | 5 | 5 | 2 | Hillsborough, Merrimack |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Download every numbered road in New Hampshire as CSV. Free to reuse with credit: “Fatal Crash Data, fatalcrashdata.com/deadliest-roads/new-hampshire/, from NHTSA FARS (2024 Annual Report File).”
Interstates in New Hampshire per mile
Fatal crashes a year per 100 miles of road, 2015 to 2024, for interstates with 20 miles or more in New Hampshire. Crashes per mile of road, not per vehicle. Mileage from the FHWA Interstate route log.
| Road | Per 100 miles a year | Fatal crashes | Miles | |
|---|---|---|---|---|
| 1 | I-93 | 6.2 | 82 | 132 |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Questions about the deadliest roads in New Hampshire
- What is the deadliest road in New Hampshire?
- I-93 had the most fatal crashes of any numbered road in New Hampshire from 2015 to 2024: 82, with 86 deaths. US 3 was second with 52 and State Highway 16 third with 43. Source: NHTSA's Fatality Analysis Reporting System (FARS).
- Which interstate in New Hampshire is the most dangerous per mile?
- I-93, with 6.2 fatal crashes a year per 100 miles over 2015 to 2024 on 132 miles. That is crashes per mile of road, not per vehicle.
- How many fatal crashes in New Hampshire happen on numbered roads?
- 779 of 1,135 fatal crashes in New Hampshire from 2015 to 2024 (69%) were filed on an interstate, US or state route; the rest were on county roads, city streets and unnamed roads, which are in the state's total but not ranked here.
Where the New Hampshire road numbers come from
Counted from NHTSA's Fatality Analysis Reporting System, 2024 Annual Report File: every fatal crash filed on a numbered interstate, US or state route in New Hampshire, read from the road name NHTSA filed, with ramps, frontage and service roads left out. A road gets its own page with 15 or more fatal crashes from 2022 to 2024. The full method.