Dedham, IA truck route planning & crash data
Plan safer truck routes in Dedham: commercial truck and garbage truck crashes in Dedham and Carroll County, dangerous roads, seasonality and route safety data for fleets. Patterns use Carroll County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
2 of 132 truck crashes since 2015.
Deadliest roads
How Carroll County compares with Iowa
Carroll County against Iowa and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Carroll County stands out
Full comparison
| Measure (2015–2025) | Carroll County | Iowa | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 54.8 | 68.1 | 49.7 | 20% below the state |
| Deaths per 100 crashes | 5.7 | 3.5 | 3.4 | 1.6× the state |
| Injuries per crash | 0.52 | 0.41 | 0.49 | 1.3× the state |
| Garbage-truck share | 1.6% | 2.2% | 2.3% | 25% below the state |
| On snow, slush or ice | 9.8% | 18.7% | 6.2% | 48% below the state |
| Morning rush (6–10 am) | 19.5% | 24.0% | 23.7% | 19% below the state |
| In rain, sleet or snow | 13.0% | 15.1% | 13.8% | 14% below the state |
| Winter months (Nov–Mar) | 48.8% | 45.4% | 41.9% | 1.1× the state |
| After dark | 14.6% | 23.1% | 24.8% | 37% below the state |
Carroll County has lower values than Iowa for 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 winter months (nov–mar).
Carroll County at a glance: December the month with the most truck crashes: 13.6% of the year's total.
Overview
Since 2015, 132 crashes involving commercial trucks have been reported in Carroll County. They injured 69 people and killed 7.
In complete reporting years that works out to about one truck crash every 33 days.
Dedham had 0 reported truck crashes since 2015, too few for reliable patterns, so the charts and findings on this page use Carroll County numbers.
48% of truck crash reports in Carroll County since 2015 leave the city field blank; place counts include only reports that name the place.
When crashes happen
December has the most truck crashes, 13.6% of the yearly total, while March has the fewest (3.8%).
The five winter months (November to March) hold 48.8% of truck crashes, against 45.4% across Iowa.
More truck crashes happen at 1–2 pm than at any other hour (13.6%).
Snow, slush or ice was on the road in 9.8% of truck crashes, compared with 18.7% in Iowa.
Where crashes happen
Fatal large-truck crashes within 10 miles of Dedham since 2015 were spread across roads: SR-141 (2).
Garbage & waste trucks
Garbage trucks account for 2 of the truck crashes here, or 1.5%, compared with 2.2% in Iowa.
Route planning tips for Dedham fleets
- Review driver schedules for December, the month with the most truck crashes.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
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 Carroll County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-141 | 2 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Carroll County) |
|---|---|
| US-30 | 20 |
| US-71 | 5 |
| Ia 141 | 4 |
| Lynx Ave And Us 71 And State 1 | 3 |
| Delta Ave | 3 |
| 150Th Street & Noble Ave; Cont | 2 |
| 3Rd St | 2 |
| E016/120Th St | 2 |
Dedham at a glance
| Population | 221 |
| Land area | 0.6 sq mi |
| Density | 400 per sq mi |
| Median household income (ZIP 51440) | $87,750 |
| Median home value (ZIP 51440) | $217,294 |
Waste facilities and haulers nearby
Historical data: truck crashes in Carroll 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 | 5 | — | 0.7 |
| 2000s | 7 | +44% | 0.4 |
| 2010s | 11 | +54% | 0.8 |
| 2020s | 11 | -5% | 0.8 |
From the 1990s to the 2020s, yearly reported truck crashes went from 5 to 11. Some of the change may reflect how crashes were reported. Fatal large-truck crashes: 0.2 a year in 2016–19, 0.8 a year in 2020–24.
Nearby places
Questions fleets ask about Dedham
How many truck crashes happen in Dedham?
Since 2015, 132 crashes involving commercial trucks were reported in Carroll County (69 injured, 7 killed).
Which month has the most truck crashes in Dedham?
The worst month is December: 13.6% of truck crashes in Carroll County happen then.
Are garbage truck crashes common in Dedham?
2 crashes involving garbage or refuse trucks have been reported in Carroll County since 2015, 1.5% of all truck crashes.
How does Dedham compare with Iowa for truck crashes?
Carroll County records 54.8 truck crashes per 100,000 residents a year, against 68.1 across Iowa.
What is the best way to plan truck routes in Dedham?
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.