ZIP 29485 (Summerville, SC) truck route planning & crash data
Plan safer truck routes around ZIP 29485: commercial truck and garbage truck crashes here and in Dorchester County, dangerous roads, seasonality and route safety data for fleets.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
7.4 deaths per 100 garbage-truck crashes vs 4.0 for all trucks.
Deadliest roads
How Dorchester County compares with South Carolina
Dorchester County against South Carolina and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Dorchester County stands out
Full comparison
| Measure (2015–2025) | Dorchester County | South Carolina | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 54.1 | 61.6 | 49.7 | 12% below the state |
| Deaths per 100 crashes | 4.0 | 3.9 | 3.4 | same |
| Injuries per crash | 0.61 | 0.64 | 0.49 | same |
| Garbage-truck share | 2.6% | 2.1% | 2.3% | 1.2× the state |
| On snow, slush or ice | 1.0% | 0.4% | 6.2% | 2.2× the state |
| Morning rush (6–10 am) | 23.9% | 24.0% | 23.7% | same |
| In rain, sleet or snow | 10.9% | 11.4% | 13.8% | same |
| Winter months (Nov–Mar) | 42.4% | 40.5% | 41.9% | same |
| After dark | 23.2% | 21.5% | 24.8% | 1.1× the state |
Compared with South Carolina, Dorchester County is lower on crashes per 100k residents / yr. It runs above South Carolina on garbage-truck share, on snow, slush or ice and after dark.
Dorchester County at a glance: 1.0% on snowy, slushy or icy roads, against 0.4% across South Carolina.
Overview
Dorchester County has recorded 1,097 truck crashes since 2015, with 659 people injured and 48 killed.
Across the years with complete reporting, that is roughly one truck crash every 4 days.
When crashes happen
Truck crashes peak in March (9.7% of the year) and are lowest in June (6.7%).
November through March accounts for 42.4% of truck crashes here, compared with 40.5% in South Carolina.
The busiest hour is 1–2 pm, with 9.1% of truck crashes.
Road surface: 1.0% of truck crashes were on snow, slush or ice (South Carolina: 0.4%).
Where crashes happen
The deadliest road for trucks within 10 miles of ZIP 29485 is I-26, with 7 fatal large-truck crashes since 2015. Next come US-17 (3), US-78 (3) and SR-642 (2).
Garbage & waste trucks
29 crashes involved a garbage or refuse truck, a 2.6% share (South Carolina: 2.1%).
Their busiest month is May, with 14% of garbage-truck crashes.
Deaths per 100 garbage-truck crashes: 7.4, vs 4.0 for all truck crashes.
Route planning tips for ZIP 29485 fleets
- Review driver schedules for March, the month with the most truck crashes.
- Where you can, review stops along I-26; it has the most fatal large-truck crashes nearby.
- Garbage-truck crashes here peak in May; review collection routes for that month.
- Icy and snowy roads show up in 1.0% of truck crashes here, more than South Carolina; schedule winter checks early.
- Paste your stops into the free Route Planner to see the risk score, safer alternatives and low bridges.
About the data
Crash counts come from the FMCSA crash file (police-reported crashes involving trucks over 10,000 lb); fatal-crash locations come from NHTSA FARS. Text on this page states only what these numbers show.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Dorchester County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| I-26 | 7 |
| US-17 | 3 |
| US-78 | 3 |
| SR-642 | 2 |
| SR-75 | 2 |
| CR-PALMETTO Commerce | 1 |
| SR-165 | 1 |
| SR-2028 | 1 |
| SR-317 | 1 |
| SR-456 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Dorchester County) |
|---|---|
| I-95 | 79 |
| I-26 | 60 |
| US-78 | 22 |
| Ashley Phosphate Rd | 15 |
| Orangeburg Rd | 12 |
| Dorchester Rd | 11 |
| Us 78 Hwy | 10 |
| Central Ave | 9 |
ZIP 29485 at a glance
| Population | 58,507 |
| Density | 465 per sq mi |
| Median household income | $82,987 |
| Median home value | $340,774 |
| Home ownership | 74% |
Waste facilities and haulers nearby
Historical data: truck crashes in Dorchester County since the 1990s
Combines the FMCSA crash file (all reported truck crashes, real coverage from about 1990) with NHTSA FARS (fatal crashes involving a large truck, 1982–2024).
| Decade | Truck crashes / yr | Change | Fatal crashes / yr (FARS) |
|---|---|---|---|
| 1990s | 52 | — | 1.7 |
| 2000s | 61 | +16% | 2.7 |
| 2010s | 76 | +25% | 2.4 |
| 2020s | 103 | +36% | 4.4 |
Reported truck crashes averaged 52 a year in the 1990s and 103 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. Fatal large-truck crashes: 2.5 a year in 2016–19, 4.4 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 29485
How many truck crashes happen in ZIP 29485?
Dorchester County has had 1,097 reported truck crashes since 2015, injuring 659 people and killing 48.
Where do fatal truck crashes happen most in ZIP 29485?
Since 2015, I-26 has had the most fatal large-truck crashes within 10 miles of ZIP 29485: 7.
What is the worst month for truck crashes in ZIP 29485?
The worst month is March: 9.7% of truck crashes in Dorchester County happen then.
How many garbage truck accidents happen in ZIP 29485?
Garbage trucks were involved in 29 reported crashes in Dorchester County since 2015 (2.6% of truck crashes).
What is the truck crash rate in ZIP 29485 compared with South Carolina?
Per 100,000 residents, Dorchester County has 54.1 truck crashes a year; South Carolina has 61.6.
How can I plan a safer truck route in ZIP 29485?
Use the free Route Planner: enter your stops to get a risk score, safer alternatives and the low bridges on your route.
2026 is a partial year. Updated October 2026.