St. Mary's County, MD truck route planning & crash data
Plan safer truck routes in St. Mary's County: commercial truck and garbage truck crashes, 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
14 of 367 truck crashes since 2015.
Deadliest roads
How St. Mary's County compares with Maryland
St. Mary's County against Maryland and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where St. Mary's County stands out
Full comparison
| Measure (2015–2025) | St. Mary's County | Maryland | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 27.1 | 49.3 | 49.7 | 45% below the state |
| Deaths per 100 crashes | 2.0 | 2.2 | 3.4 | 9% below the state |
| Injuries per crash | 0.67 | 0.53 | 0.49 | 1.3× the state |
| Garbage-truck share | 4.0% | 3.1% | 2.3% | 1.3× the state |
| On snow, slush or ice | 0.6% | 2.4% | 6.2% | 76% below the state |
| Morning rush (6–10 am) | 31.7% | 24.7% | 23.7% | 1.3× the state |
| In rain, sleet or snow | 9.5% | 13.8% | 13.8% | 31% below the state |
| Winter months (Nov–Mar) | 41.8% | 40.4% | 41.9% | same |
| After dark | 13.3% | 25.2% | 24.8% | 47% below the state |
St. Mary's County has lower values than Maryland for crashes per 100k residents / yr, deaths per 100 crashes and on snow, slush or ice. It stands out for higher injuries per crash, garbage-truck share and morning rush (6–10 am).
St. Mary's County at a glance: SR-234 most fatal truck crashes in St. Mary's County: 3 since 2015.
Overview
Since 2015, 367 crashes involving commercial trucks have been reported in St. Mary's County. They injured 243 people and killed 8.
Across the years with complete reporting, that is roughly one truck crash every 12 days.
When crashes happen
The worst month is March with 12.0% of truck crashes; the quietest is February at 6.3%.
The five winter months (November to March) hold 41.8% of truck crashes, against 40.4% across Maryland.
The busiest hour is 12–1 pm, with 11.4% of truck crashes.
0.6% of truck crashes here happened on snow, slush or ice, against 2.4% across Maryland.
Where crashes happen
Within this area, SR-234 had the most fatal crashes involving a large truck since 2015 (3). After it: CR-2 (1), SR-235 (1) and SR-247 (1).
Garbage & waste trucks
Garbage trucks account for 14 of the truck crashes here, or 3.8%, compared with 3.1% in Maryland.
Route planning tips for St. Mary's County fleets
- Review driver schedules for March, the month with the most truck crashes.
- Where you can, review stops along SR-234; it has the most fatal large-truck crashes nearby.
- 31.7% of truck crashes happen between 6 and 10 am, above Maryland; consider earlier or later starts where possible.
- Check your own stops for crash hotspots and low bridges with the free Route Planner.
About the data
This report uses the FMCSA crash file (reported crashes of trucks over 10,000 lb) and NHTSA FARS (fatal crashes). It reports the numbers without guessing at reasons.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in St. Mary's County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (in St. Mary's County) |
|---|---|
| SR-234 | 3 |
| CR-2 | 1 |
| SR-235 | 1 |
| SR-247 | 1 |
| SR-4 | 1 |
| SR-6 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (St. Mary's County) |
|---|---|
| Three Notch Rd | 101 |
| Point Lookout Rd | 52 |
| Budds Creek Rd | 13 |
| St Andrews Church Rd | 12 |
| Acrs Marked Off Road | 8 |
| Great Mills Rd | 7 |
| Hollywood Rd | 6 |
| Patuxent Beach Rd | 5 |
St. Mary's County at a glance
| Population | 116,469 |
| Land area | 358.6 sq mi |
| Density | 325 per sq mi |
| Median household income (ZIP average) | $125,867 |
Historical data: truck crashes in St. Mary's 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 | 14 | — | 1.1 |
| 2000s | 10 | -30% | 0.6 |
| 2010s | 24 | +158% | 0.8 |
| 2020s | 34 | +37% | 0.4 |
Reported truck crashes averaged 14 a year in the 1990s and 34 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. Fatal large-truck crashes: 1.5 a year in 2016–19, 0.4 a year in 2020–24.
Cities, towns & communities in St. Mary's County
ZIP codes in St. Mary's County
Nearby counties
Questions fleets ask about St. Mary's County
How many truck accidents are there in St. Mary's County?
Since 2015, 367 crashes involving commercial trucks were reported in St. Mary's County (243 injured, 8 killed).
What is the most dangerous road for trucks in St. Mary's County?
Since 2015, SR-234 has had the most fatal large-truck crashes in St. Mary's County: 3.
Which month has the most truck crashes in St. Mary's County?
Truck crashes in St. Mary's County peak in March, with 12.0% of the year's crashes.
How many garbage truck crashes are there in St. Mary's County?
14 crashes involving garbage or refuse trucks have been reported in St. Mary's County since 2015, 3.8% of all truck crashes.
How do truck crashes in St. Mary's County compare with Maryland?
The yearly rate is 27.1 truck crashes per 100,000 residents in St. Mary's County, vs 49.3 for Maryland.
How do I plan a garbage truck route in St. Mary's County?
Paste your stops into the free CurbWaste Route Planner: it scores your route against fatal-crash locations, suggests safer alternatives and flags low bridges.
2026 is a partial year. Updated October 2026.