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Traffic | vehicles per day1,457 |
|---|---|
Trucks | 12.6% |
Average travel time | 32.8 min |
Congestion ratio | 5.6% |
Drivers’ average age | 48.5 yrs |
Drivers’ average income | $81,004 |
The average monitored road in Grundy County, Iowa carries 1,457 vehicles per day. Across its 314 miles of monitored roads, that adds up to 588,704 vehicle-miles traveled per day (≈215 million per year). About 1 in 8 vehicles is a truck, in line with Iowa (11.0%).
At 1,457 vehicles per day, the average monitored road in Grundy carries 52% less traffic than the state average of 3,042, suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. In total volume terms, its road network carries about 0.7% of Iowa's statewide total of vehicle-miles. 62% of counties in Iowa see more traffic than Grundy's 1,457 vehicles per day.
The average trip takes 32.8 minutes, on par with the state level. On travel time, Grundy runs shorter than 61% of counties in Iowa.
At 51% lower than the state level, the 5.6% congestion ratio signals smoother traffic flow - delays are rare enough to plan travel times almost to the minute.
| Traffic | vehicles per day4,058 |
|---|---|
| Trucks | 16.9% |
| Average travel time | 54.3 min |
| Congestion ratio | 9.2% |
| Drivers’ average age | 45.6 yrs |
| Drivers’ average income | $79,011 |
Highways carry about half of all travel in Grundy County, Iowa, 45% of vehicle-miles. The average highway carries 4,058 vehicles per day, 189% more than the average non-highway road in the same area, which carries 1,404 vehicles per day.
With 17% of the road miles (53 miles in 50 segments), highways punch above their length, carrying 267,341 vehicle-miles traveled per day (≈97.6 million per year).
The concentration of trucks on highways (16.9%) is 5% higher than the state average for similar road classifications. The highway traffic mix is typical for Iowa: neither freight- nor commuter-dominated.
68% of counties in Iowa see a lower highway truck share than Grundy's 16.9%. 58% of counties in Iowa see fewer highway trucks per day than Grundy's roughly 687.
| Traffic | vehicles per day1,404 |
|---|---|
| Trucks | 8.9% |
| Average travel time | 32.3 min |
| Congestion ratio | 5.5% |
| Drivers’ average age | 49.8 yrs |
| Drivers’ average income | $82,424 |
Local roads carry about half of all travel in Grundy County, Iowa, 55% of vehicle-miles. A typical local road sees 1,404 vehicles per day.
Spread over 261 miles and 2,473 segments, 83% of the road network, local roads carry a lighter load per mile: 321,363 vehicle-miles traveled per day (≈117 million per year). About 1 in 11 vehicles on non-highway roads is a truck (8.9%).
Compared to highways, non-highway routes see 47% fewer trucks by share.
The non-highway congestion ratio of 5.5% is 50% lower than the state level, suggesting more efficient local mobility than the state average.
Trip origins here have higher average income than 82% of counties in Iowa. The driver population here skews younger than 64% of counties in Iowa.
Mobile device location data (anonymized and aggregated)
Road sensor networks and traffic counters
Historical traffic pattern databases
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