Superior, IA truck route planning & crash data
Plan safer truck routes in Superior: commercial truck and garbage truck crashes in Superior and Dickinson County, dangerous roads, seasonality and route safety data for fleets. Patterns use Dickinson County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
1 of 83 truck crashes since 2015.
Deadliest roads
How Dickinson County compares with Iowa
Dickinson County against Iowa and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Dickinson County stands out
Full comparison
| Measure (2015–2025) | Dickinson County | Iowa | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 37.5 | 68.1 | 49.7 | 45% below the state |
| Deaths per 100 crashes | 2.7 | 3.5 | 3.4 | 23% below the state |
| Injuries per crash | 0.52 | 0.41 | 0.49 | 1.3× the state |
| Garbage-truck share | 1.3% | 2.2% | 2.3% | 39% below the state |
| On snow, slush or ice | 9.3% | 18.7% | 6.2% | 50% below the state |
| Morning rush (6–10 am) | 21.3% | 24.0% | 23.7% | 11% below the state |
| In rain, sleet or snow | 6.7% | 15.1% | 13.8% | 56% below the state |
| Winter months (Nov–Mar) | 36.0% | 45.4% | 41.9% | 21% below the state |
| After dark | 10.7% | 23.1% | 24.8% | 54% below the state |
Dickinson County has lower values than Iowa for crashes per 100k residents / yr, deaths per 100 crashes and garbage-truck share. Where it is higher: injuries per crash.
The headline for Dickinson County: November the month with the most truck crashes: 12.0% of the year's total.
Overview
Police reported 83 crashes involving commercial trucks in Dickinson County since 2015: 43 people were injured and 2 were killed.
That averages about one truck crash every 54 days in fully reported years.
With 1 truck crash reported in Superior since 2015, this page uses Dickinson County numbers for its patterns and comparisons.
49% of truck crash reports in Dickinson County since 2015 leave the city field blank; place counts include only reports that name the place.
When crashes happen
The worst month is November with 12.0% of truck crashes; the quietest is March at 0.0%.
Winter months (Nov–Mar) carry 36.0% of truck crashes, vs 45.4% for Iowa.
By time of day, 10–11 am stands out with 10.8% of truck crashes.
Snow, slush or ice was on the road in 9.3% of truck crashes, compared with 18.7% in Iowa.
Where crashes happen
Fatal large-truck crashes within 10 miles of Superior since 2015 were spread across roads: US-71 (2).
Garbage & waste trucks
Garbage trucks account for 1 of the truck crashes here, or 1.2%, compared with 2.2% in Iowa.
Route planning tips for Superior fleets
- Review driver schedules for November, 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 Dickinson County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| US-71 | 2 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Dickinson County) |
|---|---|
| US-71 | 12 |
| Ia 86 | 5 |
| Ia 9 | 5 |
| State 9/Iowa 9 | 3 |
| Hudson Ave West | 2 |
| State 86/Iowa 86 | 2 |
| State 9/Iowa 9 And 310Th Ave | 2 |
| Us 0071 / Us 71 | 2 |
Superior at a glance
| Population | 127 |
| Land area | 0.4 sq mi |
| Density | 296 per sq mi |
| Median household income (ZIP 51363) | $75,625 |
| Median home value (ZIP 51363) | $75,650 |
Waste facilities and haulers nearby
Historical data: truck crashes in Dickinson 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 | 3 | — | 0.2 |
| 2000s | 7 | +140% | 0.4 |
| 2010s | 7 | -3% | 0.3 |
| 2020s | 6 | -14% | 0.0 |
Reported truck crashes averaged 3 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. Fatal crashes involving a large truck averaged 0.5 a year in 2016–19 and 0.0 a year in 2020–24.
Nearby places
Questions fleets ask about Superior
How many truck crashes happen in Superior?
83 truck crashes have been reported in Dickinson County since 2015, with 2 deaths and 43 injuries.
Which month has the most truck crashes in Superior?
Truck crashes in Dickinson County peak in November, with 12.0% of the year's crashes.
Are garbage truck crashes common in Superior?
Garbage trucks were involved in 1 reported crash in Dickinson County since 2015 (1.2% of truck crashes).
How do truck crashes in Superior compare with Iowa?
Per 100,000 residents, Dickinson County has 37.5 truck crashes a year; Iowa has 68.1.
How can I plan a safer truck route in Superior?
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.