Gilman, IA truck route planning & crash data
Plan safer truck routes in Gilman: commercial truck and garbage truck crashes in Gilman and Marshall County, dangerous roads, seasonality and route safety data for fleets. Patterns use Marshall County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
8 of 263 truck crashes since 2015.
Deadliest roads
How Marshall County compares with Iowa
Marshall County against Iowa and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Marshall County stands out
Full comparison
| Measure (2015–2025) | Marshall County | Iowa | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 55.8 | 68.1 | 49.7 | 18% below the state |
| Deaths per 100 crashes | 4.8 | 3.5 | 3.4 | 1.4× the state |
| Injuries per crash | 0.38 | 0.41 | 0.49 | 7% below the state |
| Garbage-truck share | 2.8% | 2.2% | 2.3% | 1.3× the state |
| On snow, slush or ice | 18.1% | 18.7% | 6.2% | same |
| Morning rush (6–10 am) | 22.6% | 24.0% | 23.7% | same |
| In rain, sleet or snow | 9.7% | 15.1% | 13.8% | 36% below the state |
| Winter months (Nov–Mar) | 46.0% | 45.4% | 41.9% | same |
| After dark | 19.8% | 23.1% | 24.8% | 14% below the state |
Marshall County has lower values than Iowa for crashes per 100k residents / yr, injuries per crash and in rain, sleet or snow. It stands out for higher deaths per 100 crashes and garbage-truck share.
What stands out in Marshall County: February worst month: 11.8% of truck crashes, vs 8.3% in an average month.
Overview
Police reported 263 crashes involving commercial trucks in Marshall County since 2015: 101 people were injured and 12 were killed.
Across the years with complete reporting, that is roughly one truck crash every 16 days.
With 2 truck crashes reported in Gilman since 2015, this page uses Marshall County numbers for its patterns and comparisons.
55% of truck crash reports in Marshall County since 2015 leave the city field blank; place counts include only reports that name the place.
When crashes happen
February has the most truck crashes, 11.8% of the yearly total, while June has the fewest (5.3%).
The five winter months (November to March) hold 46.0% of truck crashes, against 45.4% across Iowa.
By time of day, 10–11 am stands out with 8.7% of truck crashes.
Snow, slush or ice was on the road in 18.1% of truck crashes, compared with 18.7% in Iowa.
Where crashes happen
Roads with fatal crashes involving a large truck within 10 miles of Gilman since 2015: SR-146 (2), US-30 (1) and Us-Hwy 30 (1). No single road stands out.
Garbage & waste trucks
Garbage trucks account for 8 of the truck crashes here, or 3.0%, compared with 2.2% in Iowa.
Route planning tips for Gilman fleets
- Review driver schedules for February, 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 Marshall County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-146 | 2 |
| US-30 | 1 |
| Us-Hwy 30 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Marshall County) |
|---|---|
| Ia 14 | 4 |
| Us 30/240Th St | 4 |
| Mile Marshalltown Blvd | 3 |
| Ia 330 | 3 |
| US-30 | 3 |
| Summit St | 3 |
| State 330/Marshalltown Blvd An | 3 |
| State 14/Reed Ave | 3 |
Gilman at a glance
| Population | 530 |
| Land area | 0.5 sq mi |
| Density | 989 per sq mi |
| Median household income (ZIP 50106) | $101,193 |
| Median home value (ZIP 50106) | $110,400 |
Waste facilities and haulers nearby
Historical data: truck crashes in Marshall 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 | 12 | — | 1.1 |
| 2000s | 18 | +42% | 1.0 |
| 2010s | 16 | -7% | 1.2 |
| 2020s | 26 | +60% | 0.2 |
In the 1990s about 12 truck crashes a year were reported; in the 2020s, about 26. Reporting coverage also changed between these periods. Fatal large-truck crashes: 1.0 a year in 2016–19, 0.2 a year in 2020–24.
Nearby places
Questions fleets ask about Gilman
How many truck crashes happen in Gilman?
Since 2015, 263 crashes involving commercial trucks were reported in Marshall County (101 injured, 12 killed).
When do most truck crashes happen in Gilman?
The worst month is February: 11.8% of truck crashes in Marshall County happen then.
How many garbage truck crashes are there in Gilman?
Garbage trucks were involved in 8 reported crashes in Marshall County since 2015 (3.0% of truck crashes).
How does Gilman compare with Iowa for truck crashes?
Marshall County records 55.8 truck crashes per 100,000 residents a year, against 68.1 across Iowa.
How can I plan a safer truck route in Gilman?
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.