Irwin, IA truck route planning & crash data
Plan safer truck routes in Irwin: commercial truck and garbage truck crashes in Irwin and Shelby County, dangerous roads, seasonality and route safety data for fleets. Patterns use Shelby County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
1 of 73 truck crashes since 2015.
Deadliest roads
How Shelby County compares with Iowa
Shelby County against Iowa and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Shelby County stands out
Full comparison
| Measure (2015–2025) | Shelby County | Iowa | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 53.1 | 68.1 | 49.7 | 22% below the state |
| Deaths per 100 crashes | 4.3 | 3.5 | 3.4 | 1.2× the state |
| Injuries per crash | 0.84 | 0.41 | 0.49 | 2.0× the state |
| Garbage-truck share | 1.5% | 2.2% | 2.3% | 33% below the state |
| On snow, slush or ice | 7.2% | 18.7% | 6.2% | 61% below the state |
| Morning rush (6–10 am) | 31.9% | 24.0% | 23.7% | 1.3× the state |
| In rain, sleet or snow | 7.2% | 15.1% | 13.8% | 52% below the state |
| Winter months (Nov–Mar) | 43.5% | 45.4% | 41.9% | same |
| After dark | 15.9% | 23.1% | 24.8% | 31% below the state |
Compared with Iowa, Shelby County is lower on crashes per 100k residents / yr, garbage-truck share and on snow, slush or ice. It stands out for higher deaths per 100 crashes, injuries per crash and morning rush (6–10 am).
What stands out in Shelby County: June the month with the most truck crashes: 13.7% of the year's total.
Overview
Police reported 73 crashes involving commercial trucks in Shelby County since 2015: 62 people were injured and 4 were killed.
In complete reporting years that works out to about one truck crash every 58 days.
With 0 truck crashes reported in Irwin since 2015, this page uses Shelby County numbers for its patterns and comparisons.
68% of truck crash reports in Shelby County since 2015 leave the city field blank; place counts include only reports that name the place.
When crashes happen
Truck crashes peak in June (13.7% of the year) and are lowest in January (1.4%).
The five winter months (November to March) hold 43.5% of truck crashes, against 45.4% across Iowa.
The busiest hour is 8–9 am, with 15.1% of truck crashes.
7.2% of truck crashes here happened on snow, slush or ice, against 18.7% across Iowa.
Where crashes happen
Since 2015, fatal crashes with a large truck within 10 miles of Irwin happened on CR-F24/150TH St (1) and CR-M47/FRONT St (1); no road leads clearly.
Garbage & waste trucks
1 crash involved a garbage or refuse truck, a 1.4% share (Iowa: 2.2%).
Route planning tips for Irwin fleets
- Plan June schedules with more margin; it is the worst month for truck crashes in Shelby County.
- The morning rush (6–10 am) holds 31.9% of truck crashes here, more than Iowa; adjust start times where you can.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
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 Shelby County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| CR-F24/150TH St | 1 |
| CR-M47/FRONT St | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Shelby County) |
|---|---|
| US-59 | 9 |
| State 44/Chatburn Ave | 4 |
| 1500Th St And St F32 Unsigned | 3 |
| F032/Street F32 | 2 |
| Ia 191 | 2 |
| Ia 44 | 2 |
| Ia 44 East Of Exchange | 2 |
| State 37/Iowa 37 | 2 |
Irwin at a glance
| Population | 320 |
| Land area | 0.6 sq mi |
| Density | 546 per sq mi |
| Median household income (ZIP 51446) | $62,750 |
| Median home value (ZIP 51446) | $91,024 |
Waste facilities and haulers nearby
Historical data: truck crashes in Shelby 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 | 2 | — | 0.4 |
| 2000s | 2 | +53% | 0.3 |
| 2010s | 6 | +158% | 0.4 |
| 2020s | 6 | -9% | 0.2 |
Reported truck crashes averaged 2 a year in the 1990s and 6 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. NHTSA counts 0.8 fatal large-truck crashes a year in 2016–19 and 0.2 a year in 2020–24.
Nearby places
Questions fleets ask about Irwin
How many truck crashes happen in Irwin?
Shelby County has had 73 reported truck crashes since 2015, injuring 62 people and killing 4.
Which month has the most truck crashes in Irwin?
The worst month is June: 13.7% of truck crashes in Shelby County happen then.
How many garbage truck crashes are there in Irwin?
Since 2015, Shelby County has reported 1 garbage-truck crash, or 1.4% of its truck crashes.
What is the truck crash rate in Irwin compared with Iowa?
Shelby County records 53.1 truck crashes per 100,000 residents a year, against 68.1 across Iowa.
How do I plan a garbage truck route in Irwin?
The free Route Planner takes your stops and returns a route risk score, safer alternatives and low-bridge warnings.
2026 is a partial year. Updated October 2026.