St. Mary, MO truck route planning & crash data
Plan safer truck routes in St. Mary: commercial truck and garbage truck crashes in St. Mary and Ste. Genevieve County, dangerous roads, seasonality and route safety data for fleets. Patterns use Ste. Genevieve County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
4 of 339 truck crashes since 2015.
Deadliest roads
How Ste. Genevieve County compares with Missouri
Ste. Genevieve County against Missouri and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Ste. Genevieve County stands out
Full comparison
| Measure (2015–2025) | Ste. Genevieve County | Missouri | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 156.4 | 85.9 | 49.7 | 1.8× the state |
| Deaths per 100 crashes | 2.8 | 2.7 | 3.4 | same |
| Injuries per crash | 0.39 | 0.44 | 0.49 | 11% below the state |
| Garbage-truck share | 1.2% | 2.2% | 2.3% | 43% below the state |
| On snow, slush or ice | 8.8% | 7.2% | 6.2% | 1.2× the state |
| Morning rush (6–10 am) | 22.3% | 22.8% | 23.7% | same |
| In rain, sleet or snow | 5.3% | 10.7% | 13.8% | 50% below the state |
| Winter months (Nov–Mar) | 44.8% | 40.7% | 41.9% | 1.1× the state |
| After dark | 27.3% | 24.7% | 24.8% | 1.1× the state |
Compared with Missouri, Ste. Genevieve County is lower on injuries per crash, garbage-truck share and in rain, sleet or snow. Where it is higher: crashes per 100k residents / yr, on snow, slush or ice and winter months (nov–mar).
The headline for Ste. Genevieve County: January the month with the most truck crashes: 13.6% of the year's total.
Overview
Police reported 339 crashes involving commercial trucks in Ste. Genevieve County since 2015: 138 people were injured and 9 were killed.
That averages about one truck crash every 13 days in fully reported years.
St. Mary had 4 reported truck crashes since 2015, too few for reliable patterns, so the charts and findings on this page use Ste. Genevieve County numbers.
When crashes happen
Truck crashes peak in January (13.6% of the year) and are lowest in August (6.2%).
The five winter months (November to March) hold 44.8% of truck crashes, against 40.7% across Missouri.
More truck crashes happen at 11 am–12 pm than at any other hour (8.8%).
Snow, slush or ice was on the road in 8.8% of truck crashes, compared with 7.2% in Missouri.
Where crashes happen
Within this area, SR-51 had the most fatal crashes involving a large truck since 2015 (5). It is followed by I-55 (1) and Sr-Z (1).
Garbage & waste trucks
4 crashes involved a garbage or refuse truck, a 1.2% share (Missouri: 2.2%).
Route planning tips for St. Mary fleets
- Review driver schedules for January, the month with the most truck crashes.
- Look at alternatives to SR-51 at busy times: it leads this area in fatal truck crashes.
- 8.8% of truck crashes were on snow, slush or ice, above Missouri; plan winter equipment checks before the season.
- Paste your stops into the free Route Planner to see the risk score, safer alternatives and low bridges.
About the data
Sources: the FMCSA crash file for all reported truck crashes and NHTSA FARS for fatal crashes with a large truck. Every statement here comes straight from those numbers.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Ste. Genevieve County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-51 | 5 |
| I-55 | 1 |
| Sr-Z | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Ste. Genevieve County) |
|---|---|
| Is 55 | 165 |
| Mo 32 | 48 |
| US-61 | 27 |
| Rt C | 18 |
| Rt Z | 8 |
| Rt Ww | 7 |
| Rt Y | 5 |
| Rt Dd | 5 |
St. Mary at a glance
| Population | 306 |
| Land area | 0.6 sq mi |
| Density | 511 per sq mi |
| Median household income (ZIP 63673) | $77,931 |
| Median home value (ZIP 63673) | $235,597 |
Waste facilities and haulers nearby
Historical data: truck crashes in Ste. Genevieve 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 | 90 | — | 0.3 |
| 2000s | 14 | -84% | 0.3 |
| 2010s | 20 | +43% | 0.7 |
| 2020s | 29 | +44% | 0.8 |
Reported truck crashes averaged 90 a year in the 1990s and 29 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. Fatal crashes involving a large truck averaged 0.5 a year in 2016–19 and 0.8 a year in 2020–24.
Nearby places
Questions fleets ask about St. Mary
How common are truck crashes in St. Mary?
339 truck crashes have been reported in Ste. Genevieve County since 2015, with 9 deaths and 138 injuries.
Which road has the most fatal truck crashes in St. Mary?
SR-51 had 5 fatal crashes involving a large truck within 10 miles of St. Mary since 2015, more than any other road.
When do most truck crashes happen in St. Mary?
The worst month is January: 13.6% of truck crashes in Ste. Genevieve County happen then.
How many garbage truck crashes are there in St. Mary?
Garbage trucks were involved in 4 reported crashes in Ste. Genevieve County since 2015 (1.2% of truck crashes).
How does St. Mary compare with Missouri for truck crashes?
Per 100,000 residents, Ste. Genevieve County has 156.4 truck crashes a year; Missouri has 85.9.
What is the best way to plan truck routes in St. Mary?
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.