Fatal crash rate · South Carolina · Road
Fatal crashes on I-77 in South Carolina
Every fatal crash NHTSA coded to Interstate 77 in South Carolina, 2020 to 2024, with the year, the county and what the record says about each. Fatal crashes only, and a count, not a rate: the federal record has no traffic volume for a road.
I-77 in South Carolina2020 to 2024 · fatal crashes recorded by NHTSA
81fatal crashes over five years · 90 deaths
Over 2020 to 2024, NHTSA recorded 81 fatal crashes on I-77 in South Carolina, in which 90 people died. That is 2% of the 5,019 fatal crashes recorded in South Carolina in those years, about 16 a year. 7 of the 81 were coded to a ramp, frontage or service road of I-77 rather than the main lanes. In 2024, the latest year, 17 were recorded.
- Counted
- FARS crashes 2020 to 2024 in South Carolina whose TWAY_ID or TWAY_ID2 begins I-77
- Share
- 81 ÷ 5,019 fatal crashes in South Carolina = 2%
Every year, 2020 to 2024
| Year | Fatal crashes on I-77 | Deaths | Fatal crashes in South Carolina | Share |
|---|---|---|---|---|
| 2020 | 14 | 14 | 964 | 1% |
| 2021 | 18 | 21 | 1,112 | 2% |
| 2022 | 18 | 22 | 1,019 | 2% |
| 2023 | 14 | 15 | 976 | 1% |
| 2024 | 17 | 18 | 948 | 2% |
2024 is NHTSA’s Annual Report File and will be revised when the final file replaces it.
Where on I-77: by county, 2020 to 2024
The counties the crashes were coded to, alphabetical. A road’s count in a county depends on how many miles of it run there and how busy they are; the page does not rank the counties. Each name opens the county page with its own rate.
What the record says about those crashes, 2020 to 2024
Every figure is a count of the 81 fatal crashes NHTSA coded to I-77 in South Carolina over five years, from the fields FARS records. Nothing is estimated or inferred.
| Road type | Crashes | Share |
|---|---|---|
| Interstate | 77 | 95% |
| Other freeway or expressway | 0 | 0% |
| Other principal arterial | 2 | 2% |
| Minor arterial | 2 | 2% |
| Major collector | 0 | 0% |
| Minor collector | 0 | 0% |
| Local road | 0 | 0% |
| Unknown or not reported | 0 | 0% |
| Rural | 39 | 48% |
| Urban | 42 | 52% |
| Time of day | Crashes | Share |
|---|---|---|
| Midnight to 5:59 am | 27 | 33% |
| 6 am to 11:59 am | 13 | 16% |
| Noon to 5:59 pm | 15 | 19% |
| 6 pm to 11:59 pm | 26 | 32% |
| Hour unknown | 0 | 0% |
| Light | Crashes | Share |
|---|---|---|
| Daylight | 26 | 32% |
| Dark, not lighted (or lighting unknown) | 48 | 59% |
| Dark, lighted | 2 | 2% |
| Dawn or dusk | 5 | 6% |
| Unknown or not reported | 0 | 0% |
| Day of week | Crashes | Share |
|---|---|---|
| Sunday | 10 | 12% |
| Monday | 6 | 7% |
| Tuesday | 10 | 12% |
| Wednesday | 9 | 11% |
| Thursday | 13 | 16% |
| Friday | 12 | 15% |
| Saturday | 21 | 26% |
| Month | Crashes | Share |
|---|---|---|
| January | 6 | 7% |
| February | 4 | 5% |
| March | 6 | 7% |
| April | 6 | 7% |
| May | 11 | 14% |
| June | 9 | 11% |
| July | 6 | 7% |
| August | 4 | 5% |
| September | 7 | 9% |
| October | 16 | 20% |
| November | 2 | 2% |
| December | 4 | 5% |
| Weather | Crashes | Share |
|---|---|---|
| Clear | 70 | 86% |
| Cloudy | 4 | 5% |
| Rain | 6 | 7% |
| Snow, sleet or freezing rain | 0 | 0% |
| Fog, smog or smoke | 0 | 0% |
| Severe wind, blowing sand or other | 0 | 0% |
| Unknown or not reported | 1 | 1% |
| Involving | Crashes | Share |
|---|---|---|
| A pedestrian | 14 | 17% |
| A bicyclist or other cyclist | 0 | 0% |
| A speeding-related vehicle | 35 | 43% |
| A driver police reported as drinking | 33 | 41% |
| A large truck (over 10,000 lb) | 26 | 32% |
| A motorcycle | 6 | 7% |
| A hit-and-run vehicle | 1 | 1% |
| A teen driver (15 to 19) | 4 | 5% |
Road type is FARS FUNC_SYS for the crash, which can differ from the route’s class where a crash was coded on a frontage road or ramp; speeding is any vehicle coded SPEEDREL 2 to 5; drinking is any driver coded DRINKING = 1 (police-reported, not a blood-alcohol test).
How this is counted
- The road is the designation FARS wrote. Each crash in NHTSA’s Fatality Analysis Reporting System names the trafficway it was on (
TWAY_ID) and, at an intersection, a second one (TWAY_ID2). NHTSA standardises the route designation (I-45,US-59,SR-6) and the police often add a local name after it (I-45/NORTH FWY) or a ramp or frontage word. The page counts every crash whose designation is I-77, once, whatever followed it. Nothing else is matched: a crash coded only to a local street name is not here even if that street is this road. - Same number, another state, another road. I-77 in South Carolina is counted within South Carolina only. Where the route continues into a neighbouring state it has its own page there, and a State Route number means nothing outside its state.
- Only roads with ten or more fatal crashes over 2020 to 2024 have a page. Fewer is too few to say anything, and the county page already lists the most-named roads in each county as the police wrote them.
- No rate, no rank. The South Carolina page lists every numbered road in route order with its count and nothing else. Roads with more lanes, more miles or more traffic record more fatal crashes; the record cannot separate those from the road’s design.
Informational only, not professional advice. Last reviewed: October 2026. Data snapshot built 2026-10-30.
Other roads in South Carolina
- I-20 81
- I-26 147
- I-85 65
- I-95 108
- I-385 27
- I-526 11
- SR-3 15
- SR-4 14
- SR-5 19
- SR-6 49
- SR-7 13
- SR-8 13
- SR-9 85
- SR-11 26
- SR-12 19
- SR-13 23
- SR-14 29
- SR-16 15
- SR-18 11
- SR-19 38
- SR-20 42
- SR-21 17
- SR-22 24
- SR-23 15
- SR-24 22
- SR-28 39
- SR-29 24
- SR-30 16
- SR-31 29
- SR-32 10
In route order, first thirty; the full list is on the South Carolina page.