Warren County, IA truck route planning & crash data
Plan safer truck routes in Warren 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
7 of 291 truck crashes since 2015.
Deadliest roads
How Warren County compares with Iowa
Warren County against Iowa and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Warren County stands out
Full comparison
| Measure (2015–2025) | Warren County | Iowa | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 43.7 | 68.1 | 49.7 | 36% below the state |
| Deaths per 100 crashes | 3.3 | 3.5 | 3.4 | same |
| Injuries per crash | 0.29 | 0.41 | 0.49 | 29% below the state |
| Garbage-truck share | 2.6% | 2.2% | 2.3% | 1.2× the state |
| On snow, slush or ice | 15.1% | 18.7% | 6.2% | 19% below the state |
| Morning rush (6–10 am) | 17.0% | 24.0% | 23.7% | 29% below the state |
| In rain, sleet or snow | 14.8% | 15.1% | 13.8% | same |
| Winter months (Nov–Mar) | 39.9% | 45.4% | 41.9% | 12% below the state |
| After dark | 26.9% | 23.1% | 24.8% | 1.2× the state |
Warren County has lower values than Iowa for crashes per 100k residents / yr, injuries per crash and on snow, slush or ice. It runs above Iowa on garbage-truck share and after dark.
The headline for Warren County: I-35 3 fatal truck crashes since 2015, more than any other road in Warren County.
Overview
Since 2015, 291 crashes involving commercial trucks have been reported in Warren County. They injured 82 people and killed 9.
That averages about one truck crash every 15 days in fully reported years.
When crashes happen
The worst month is August with 11.3% of truck crashes; the quietest is December at 5.2%.
Winter months (Nov–Mar) carry 39.9% of truck crashes, vs 45.4% for Iowa.
More truck crashes happen at 3–4 pm than at any other hour (10.3%).
Road surface: 15.1% of truck crashes were on snow, slush or ice (Iowa: 18.7%).
Where crashes happen
Within this area, I-35 had the most fatal crashes involving a large truck since 2015 (3). It is followed by SR-5 (2), US-65 (2) and US-69 (2).
Garbage & waste trucks
7 crashes involved a garbage or refuse truck, a 2.4% share (Iowa: 2.2%).
Route planning tips for Warren County fleets
- Build extra time into August routes: it has the most truck crashes here.
- Look at alternatives to I-35 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
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 Warren County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (in Warren County) |
|---|---|
| I-35 | 3 |
| SR-5 | 2 |
| US-65 | 2 |
| US-69 | 2 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Warren County) |
|---|---|
| I-35 | 9 |
| Ia 5 | 8 |
| US-65 | 8 |
| Blk. N. Jefferson Way | 7 |
| Blk N Jefferson Way | 6 |
| Blk. W. Second Ave. | 5 |
| State 92/Iowa 92 | 4 |
| State 5/Iowa 5 And G016/Scotch | 3 |
Warren County at a glance
| Population | 56,343 |
| Land area | 569.7 sq mi |
| Density | 99 per sq mi |
| Median household income (ZIP average) | $95,566 |
Waste facilities and haulers nearby
Historical data: truck crashes in Warren 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 | 6 | — | 0.5 |
| 2000s | 19 | +231% | 0.7 |
| 2010s | 23 | +16% | 1.3 |
| 2020s | 26 | +16% | 0.4 |
From the 1990s to the 2020s, yearly reported truck crashes went from 6 to 26. Some of the change may reflect how crashes were reported. Fatal crashes involving a large truck averaged 1.5 a year in 2016–19 and 0.4 a year in 2020–24.
Cities, towns & communities in Warren County
ZIP codes in Warren County
Nearby counties
Questions fleets ask about Warren County
How many truck crashes happen in Warren County?
Warren County has had 291 reported truck crashes since 2015, injuring 82 people and killing 9.
Where do fatal truck crashes happen most in Warren County?
NHTSA data shows I-35 with 3 fatal large-truck crashes in Warren County since 2015, the highest of any road.
What is the worst month for truck crashes in Warren County?
The worst month is August: 11.3% of truck crashes in Warren County happen then.
How many garbage truck crashes are there in Warren County?
Since 2015, Warren County has reported 7 garbage-truck crashes, or 2.4% of its truck crashes.
What is the truck crash rate in Warren County compared with Iowa?
Per 100,000 residents, Warren County has 43.7 truck crashes a year; Iowa has 68.1.
What is the best way to plan truck routes in Warren County?
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.