Boston to Manchester car accident guide and crash data

If you were just in a crash somewhere between Boston and Manchester, you're dealing with two state systems stretched along one connected road. The Boston-Manchester media market covers eastern Massachusetts and southern New Hampshire, and its two anchor cities sit on the same interstate: I-93. What changes when you cross the state line is the law, the agency that keeps your crash record, and the odds of walking away.

Those odds are not close. Massachusetts had the lowest traffic death rate in the country in 2024, with 363 deaths and 5.1 fatalities per 100,000 residents. New Hampshire recorded 133 deaths the same year, but at 9.4 per 100,000 its rate ran nearly double the Massachusetts figure.¹ This guide pulls together the local crash data, the roads where it happens, and the rules that decide what your claim is worth.

The roads where crashes cluster

In Boston, a small number of intersections carry most of the harm. The city has averaged about 1,900 serious or fatal crashes a year since 2015.² The worst single spot is Massachusetts Avenue at Melnea Cass Boulevard in the South End. Together with the nearby Massachusetts Avenue and Albany Street junction, those two intersections logged 220 crashes between January 2015 and May 2024, including 86 that injured pedestrians and 27 that struck cyclists, based on a Boston Globe analysis of the city's Vision Zero crash records.² Blue Hill Avenue, Columbia Road, and American Legion Highway turn up repeatedly on the same maps.

The one road that ties the whole market together is I-93. Through Boston it runs as the Southeast Expressway and the O'Neill Tunnel, among the most congested stretches in New England, and it feeds off the Route 128 and I-95 beltway and the Massachusetts Turnpike. North of the border, New Hampshire spent about $811.7 million rebuilding the 19.8-mile section from the Massachusetts line at Salem to the I-293 split in Manchester, widening it from two lanes each way to four.³ That highway was built in the early 1960s for 60,000 to 70,000 vehicles a day and was carrying more than 100,000 by the late 1990s, which is why federal and state engineers cited both congestion and safety when they rebuilt it.³

Manchester has its own problem corners. At Sheffield Road and South Willow Street, NHDOT counted 56 crashes between 2014 and 2024, 49 of them involving more than one vehicle and at least eight causing injuries, with 12 in 2017 alone. In 2026 the department recommended turning it into an all-way stop.⁴ To the south, the F.E. Everett Turnpike and I-293 carry Nashua and Manchester commuter traffic and see regular wrecks near their exit ramps.

What the local numbers say

Massachusetts logged 128,769 reported crashes statewide in 2025.⁵ Boston by itself recorded 462 crashes in March 2026 and 451 in April 2026, a steady load for a single city.⁶ Most of these never make the news; they show up as fender benders and disputed insurance claims. Only about 4 percent of Massachusetts crash deaths happen on rural roads, the lowest share in the nation, while New Hampshire's toll leans toward faster rural highways and interstates.¹

New Hampshire's direction is the one to watch. Traffic deaths in the state rose 42 percent between 2014 and 2024, and its fatality rate climbed 36 percent over that decade, according to the transportation research group TRIP.⁷ State officials keep naming the same causes: impairment, speeding, and distracted driving.

Who tracks this, and how to get your report

Massachusetts crash records live in MassDOT's IMPACT database, and the City of Boston runs its own Vision Zero program, which set a goal of ending fatal and serious crashes by 2030 and lowered the default city speed limit to 25 mph in 2017.⁸ Boston has been rebuilding corridors like Beacon Street, Kneeland Street, and Tremont Street, and a funded redesign of Blue Hill Avenue with center-running bus lanes is due to start construction in 2026.⁹¹⁰ In New Hampshire, crash and fatality data flow through NHDOT's Driving Toward Zero program, and police reports go to the Division of Motor Vehicles.

If you need your own crash report, request it from the responding police department or the state motor vehicle agency, and get the report number before you talk to any insurer. That document is what an adjuster reads first.

The laws that shape a claim

Both states ban holding a phone while driving. In Massachusetts the hands-free law is M.G.L. c. 90 § 13B, effective February 23, 2020, with fines of $100 for a first offense, $250 for a second, and $500 for a third; the third offense also counts as a surchargeable event on your insurance.¹¹ New Hampshire got there first. RSA 265:79-c took effect July 1, 2015, with the same $100/$250/$500 ladder for offenses inside a 24-month window and a total ban on any device use, hands-free included, for drivers under 18.¹²

The deadline to sue is the same length in both states but comes from different statutes. Massachusetts gives you three years from the crash to file a personal injury lawsuit under M.G.L. c. 260 § 2A.¹³ New Hampshire also sets three years, under RSA 508:4, running from the act or, when an injury wasn't reasonably discoverable at the time, from the day you discover it.¹⁴ Miss the window and a court can dismiss the case no matter how strong it is.

After a crash here

See a doctor first, even if you feel fine. Soft-tissue and head injuries often surface days later, and a gap in treatment is the first thing an insurer uses to argue you weren't really hurt. Photograph the scene and the vehicles, note the road conditions before they change, and write down the police report number while you're still there.

If your crash straddles the state line, say you live in Nashua and get hit on I-93 in Massachusetts, the crash location usually decides which state's law applies, and that can change both your filing deadline and your insurance rights. Keep every medical bill and repair estimate. When the paperwork or an insurance dispute grows past what you can manage alone, you can find a local attorney through the thatcarhitme.com legal directory.

This is general information, not legal advice.

Sources

1. Insurance Institute for Highway Safety, Fatality Facts 2024: State by state. https://www.iihs.org/topics/fatality-statistics/detail/state-by-state

2. The Boston Globe, "Boston averages 1,900 serious or fatal crashes per year. Here are the most dangerous intersections," Oct. 22, 2024. https://www.bostonglobe.com/2024/10/22/data/boston-traffic-high-accident-intersections/

3. Federal Highway Administration, I-93 Reconstruction (Salem to Manchester, NH) project profile. https://www.fhwa.dot.gov/ipd/project_profiles/nh_i93_reconstruction.aspx

4. Manchester Ink Link, "NHDOT recommends all-way stop at Sheffield Road and South Willow Street" (2026). https://manchester.inklink.news/nhdot-recommends-all-way-stop-at-sheffield-road-and-south-willow-street/

5. thatcarhitme.com, Massachusetts Year-over-Year Crash Report (2025). https://thatcarhitme.com/crash-data/massachusetts/statewide/2025-annual-report

6. thatcarhitme.com, Boston, MA monthly crash reports (March and April 2026). https://thatcarhitme.com/crash-data/massachusetts/boston/march-2026-report and https://thatcarhitme.com/crash-data/massachusetts/boston/april-2026-report

7. TRIP, "Addressing America's Traffic Safety Crisis: New Hampshire," July 23, 2025. https://tripnet.org/reports/addressing-americas-traffic-safety-crisis-new-hampshire-news-release-07-23-2025/

8. City of Boston, Vision Zero. https://www.boston.gov/departments/transportation/vision-zero

9. City of Boston, Safer, More Accessible Walking and Biking. https://www.boston.gov/departments/transportation/safer-more-accessible-walking-and-biking

10. MBTA, Blue Hill Avenue Transportation Action Plan. https://www.mbta.com/projects/blue-hill-avenue-transportation-action-plan

11. Massachusetts General Laws, Chapter 90, Section 13B. https://malegislature.gov/Laws/GeneralLaws/PartI/TitleXIV/Chapter90/Section13b

12. New Hampshire RSA 265:79-c, Use of Mobile Electronic Devices While Driving. https://gc.nh.gov/rsa/html/XXI/265/265-79-c.htm

13. Massachusetts General Laws, Chapter 260, Section 2A. https://malegislature.gov/Laws/GeneralLaws/PartIII/TitleV/Chapter260/Section2A

14. New Hampshire RSA 508:4, Personal Actions. https://gc.nh.gov/rsa/html/LII/508/508-4.htm