Shiawassee, MI truck route planning & crash data
Plan safer truck routes in Shiawassee: commercial truck and garbage truck crashes in Shiawassee and Shiawassee County, dangerous roads, seasonality and route safety data for fleets. Patterns use Shiawassee County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
13 of 473 truck crashes since 2015.
Deadliest roads
How Shiawassee County compares with Michigan
Shiawassee County against Michigan and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Shiawassee County stands out
Full comparison
| Measure (2015–2025) | Shiawassee County | Michigan | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 58.0 | 52.4 | 49.7 | 1.1× the state |
| Deaths per 100 crashes | 2.1 | 2.1 | 3.4 | same |
| Injuries per crash | 0.28 | 0.30 | 0.49 | same |
| Garbage-truck share | 2.8% | 3.2% | 2.3% | 14% below the state |
| On snow, slush or ice | 18.4% | 17.7% | 6.2% | same |
| Morning rush (6–10 am) | 27.2% | 25.5% | 23.7% | same |
| In rain, sleet or snow | 17.3% | 21.9% | 13.8% | 21% below the state |
| Winter months (Nov–Mar) | 41.7% | 44.4% | 41.9% | same |
| After dark | 24.6% | 20.7% | 24.8% | 1.2× the state |
Shiawassee County has lower values than Michigan for garbage-truck share and in rain, sleet or snow. It stands out for higher crashes per 100k residents / yr and after dark.
The headline for Shiawassee: SR-21 most fatal truck crashes within 10 miles of Shiawassee: 2 since 2015.
Overview
Shiawassee County has recorded 473 truck crashes since 2015, with 130 people injured and 10 killed.
Across the years with complete reporting, that is roughly one truck crash every 9 days.
Only 63 truck crashes were reported in Shiawassee since 2015; patterns below come from Shiawassee County as a whole.
When crashes happen
Truck crashes peak in January (10.8% of the year) and are lowest in April (4.9%).
The five winter months (November to March) hold 41.7% of truck crashes, against 44.4% across Michigan.
The busiest hour is 8–9 am, with 9.3% of truck crashes.
18.4% of truck crashes here happened on snow, slush or ice, against 17.7% across Michigan.
Where crashes happen
Within this area, SR-21 had the most fatal crashes involving a large truck since 2015 (2). After it: CR-HIBBARD Rd (1), I-69 (1) and SR-71 (1).
Garbage & waste trucks
Garbage trucks account for 13 of the truck crashes here, or 2.7%, compared with 3.2% in Michigan.
Route planning tips for Shiawassee fleets
- Review driver schedules for January, the month with the most truck crashes.
- Look at alternatives to SR-21 at busy times: it leads this area in fatal truck crashes.
- Check your own stops for crash hotspots and low bridges with the free Route Planner.
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 Shiawassee County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-21 | 2 |
| CR-HIBBARD Rd | 1 |
| I-69 | 1 |
| SR-71 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Shiawassee County) |
|---|---|
| I-69 | 120 |
| Lansing | 16 |
| Main | 14 |
| Beard | 13 |
| Bath | 6 |
| Shiawassee | 5 |
| State | 5 |
| Bennington | 4 |
Shiawassee at a glance
| Population | 2,736 |
| Land area | 36.4 sq mi |
| Density | 75 per sq mi |
| Median household income (ZIP 48476) | $70,000 |
| Median home value (ZIP 48476) | $131,831 |
Waste facilities and haulers nearby
Historical data: truck crashes in Shiawassee 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 | 32 | — | 1.6 |
| 2000s | 27 | -16% | 0.8 |
| 2010s | 25 | -8% | 0.5 |
| 2020s | 45 | +81% | 1.0 |
In the 1990s about 32 truck crashes a year were reported; in the 2020s, about 45. Reporting coverage also changed between these periods. NHTSA counts 0.8 fatal large-truck crashes a year in 2016–19 and 1.0 a year in 2020–24.
Nearby places
Questions fleets ask about Shiawassee
How many truck crashes happen in Shiawassee?
Since 2015, 473 crashes involving commercial trucks were reported in Shiawassee County (130 injured, 10 killed).
What is the most dangerous road for trucks in Shiawassee?
SR-21 had 2 fatal crashes involving a large truck within 10 miles of Shiawassee since 2015, more than any other road.
When do most truck crashes happen in Shiawassee?
January has the most truck crashes in Shiawassee County, 10.8% of the yearly total.
How many garbage truck accidents happen in Shiawassee?
Garbage trucks were involved in 13 reported crashes in Shiawassee County since 2015 (2.7% of truck crashes).
What is the truck crash rate in Shiawassee compared with Michigan?
Shiawassee County records 58.0 truck crashes per 100,000 residents a year, against 52.4 across Michigan.
How do I plan a garbage truck route in Shiawassee?
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.