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US Route 1
Fatal crashes 2015–2024 90Deaths 92Counties 4Latest data year 2024
FARS data are based on police crash reports and other sources; the drunk-driving measure is based on the highest BAC of any driver in the crash. Latest data year: 2024. The route is the trafficway recorded for each crash (FARS TWAY_ID); the same route number in another state has its own page.
Between 2015 and 2024, FARS records 90 fatal crashes on US Route 1 in Connecticut, with 92 deaths.
That is 3.2% of the 2,798 fatal crashes in Connecticut over the same years. The ten-year crash count rose 15% from 78 in 2005–2014 to 90 in 2015–2024.
The crashes were concentrated in Fairfield County (37), New Haven County (34) and New London County (15) and 1 other county.
27.8% of the crashes had a driver reported as drinking (Connecticut: 34.3%) and 31.1% had a speeding-related driver (33.3%); pedestrians were 33.7% and motorcyclists 23.9% of those killed.
Fatal crashes per year
Route identification in FARS is consistent from 2000; earlier years are not shown. Shaded band: the ten-year window used for the shares below.
Compared with all fatal crashes in Connecticut
| Measure | US Route 1 | Connecticut |
|---|---|---|
| Fatal crashes, 2015–2024 | 90 | 2,798 |
| Deaths, 2015–2024 | 92 | 2,983 |
| Deaths per fatal crash | 1.0 | 1.1 |
| Share of state fatal crashes | 3.2% | 100% |
| Change vs previous ten years | +15% | +9% |
Factor shares
Counties along the route
| # | County | Fatal crashes on US-1 | Share of route | County total, all roads |
|---|---|---|---|---|
| 1 | Fairfield County | 37 | 41% | 485 |
| 2 | New Haven County | 34 | 38% | 759 |
| 3 | New London County | 15 | 17% | 261 |
| 4 | Middlesex County | 4 | 4% | 140 |
Hour of day
Share of fatal crashes on US Route 1 beginning in each hour, 2015–2024; tick marks the Connecticut share for all roads.
Where along the route
| Mile marker range | Fatal crashes | Share |
|---|---|---|
| Mile 5–10 | 12 | 13% |
| Mile 30–35 | 11 | 12% |
| Mile 45–50 | 10 | 11% |
| Mile 35–40 | 8 | 9% |
| Mile 50–55 | 6 | 7% |
| Mile 40–45 | 5 | 6% |
Five-mile bins by FARS milepoint, the six with the most fatal crashes; 97.8% of crashes on the route have a milepoint. Milepoints are as recorded by the state and can restart at county or district lines.
Other routes in Connecticut
- Interstate 95 155
- Interstate 91 119
- Interstate 84 118
- State Route 8 87
- US Route 6 86
- State Route 15 76
- State Route 10 64
- US Route 44 60
- US Route 7 41
- State Route 2 36
- Interstate 395 34
- State Route 9 33
All routes and counties in Connecticut
Questions and answers
How many fatal crashes have there been on US Route 1 in Connecticut?
90 fatal crashes with 92 deaths over 2015–2024, per NHTSA's FARS. The route is the trafficway recorded for the crash; the same numbered route in another state has its own page.
Which counties along US Route 1 had the most fatal crashes?
Fairfield County (37), New Haven County (34), New London County (15) and Middlesex County (4).
What share of crashes on US Route 1 involved alcohol or speeding?
27.8% had a driver reported as drinking and 31.1% a speeding-related driver, against 34.3% and 33.3% for all fatal crashes in Connecticut.
When do fatal crashes happen on US Route 1?
65.5% of the crashes were between 6pm and 6am. The hour chart on this page shows the full distribution.
Provenance
Source: NHTSA Fatality Analysis Reporting System, annual national CSV files 2000–2024 (accident, vehicle and person tables), public domain. Route pages are built for signed Interstate, US and state routes with at least 20 fatal crashes in 2015–2024. Data through 31 Dec 2024; generated 30 Sep 2026. See methodology and corrections.