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Interstate 77
Fatal crashes 2015–2024 139Deaths 158Counties 7Latest 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.
Interstate 77 in South Carolina was the trafficway in 139 fatal crashes between 2015 and 2024, in which 158 people died.
That is 1.4% of the 9,692 fatal crashes in South Carolina over the same years. The ten-year crash count rose 65% from 84 in 2005–2014 to 139 in 2015–2024.
The crashes were concentrated in Richland County (52), York County (36) and Chester County (26) and 4 other counties.
38.8% of the crashes had a driver reported as drinking (South Carolina: 32.2%) and 50.4% had a speeding-related driver (40.2%); pedestrians were 15.2% and motorcyclists 7.0% 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 South Carolina
| Measure | Interstate 77 | South Carolina |
|---|---|---|
| Fatal crashes, 2015–2024 | 139 | 9,692 |
| Deaths, 2015–2024 | 158 | 10,473 |
| Deaths per fatal crash | 1.1 | 1.1 |
| Share of state fatal crashes | 1.4% | 100% |
| Change vs previous ten years | +65% | +15% |
Factor shares
Counties along the route
| # | County | Fatal crashes on I-77 | Share of route | County total, all roads |
|---|---|---|---|---|
| 1 | Richland County | 52 | 37% | 553 |
| 2 | York County | 36 | 26% | 314 |
| 3 | Chester County | 26 | 19% | 118 |
| 4 | Fairfield County | 20 | 14% | 104 |
| 5 | Lexington County | 3 | 2% | 466 |
| 6 | Dillon County | 1 | 1% | 100 |
| 7 | Jasper County | 1 | 1% | 160 |
Hour of day
Share of fatal crashes on Interstate 77 beginning in each hour, 2015–2024; tick marks the South Carolina share for all roads.
Where along the route
| Mile marker range | Fatal crashes | Share |
|---|---|---|
| Mile 5–10 | 16 | 12% |
| Mile 10–15 | 12 | 9% |
| Mile 15–20 | 9 | 6% |
| Mile 25–30 | 8 | 6% |
| Mile 55–60 | 8 | 6% |
| Mile 65–70 | 8 | 6% |
Five-mile bins by FARS milepoint, the six with the most fatal crashes; 86.3% 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 South Carolina
- US Route 17 439
- Interstate 26 298
- Interstate 95 228
- US Route 76 204
- US Route 52 179
- US Route 25 170
- Interstate 20 162
- US Route 21 154
- State Route 9 150
- Interstate 85 142
- US Route 29 135
- US Route 176 134
All routes and counties in South Carolina
Questions and answers
How many fatal crashes have there been on Interstate 77 in South Carolina?
139 fatal crashes with 158 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 Interstate 77 had the most fatal crashes?
Richland County (52), York County (36), Chester County (26), Fairfield County (20) and Lexington County (3).
What share of crashes on Interstate 77 involved alcohol or speeding?
38.8% had a driver reported as drinking and 50.4% a speeding-related driver, against 32.2% and 40.2% for all fatal crashes in South Carolina.
When do fatal crashes happen on Interstate 77?
58.3% 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.