
Total Traffic Volume & Performance in Monona County, Iowa
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day1,358 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 17.4% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 34.0 min |
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Congestion ratio The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 11.1% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 50.4 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $70,330 |
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The average monitored road in Monona County, Iowa carries 1,358 vehicles per day. Across its 285 miles of monitored roads, that adds up to 580,320 vehicle-miles traveled per day (≈212 million per year). Freight weighs heavily here: trucks are 17.4% of traffic, against 11.0% across Iowa.
Traffic 55% below the Iowa average
Monona's average daily traffic volume is 55% lower than the state average - 1,358 vehicles per day against 3,042 - suggesting less traffic load per road - very light roads: easy truck access, but little passing trade for roadside retail. Across the whole network, that travel is about 0.7% of Iowa's statewide total. Monona carries less traffic than 70% of counties in Iowa.
Journey times here (34.0 minutes on average) closely track the state level. Its average travel time of 34.0 minutes is longer than 57% of counties in Iowa.
At 11.1%, the congestion ratio matches the state level closely.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Monona County, Iowa
| Traffic | vehicles per day6,823 |
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| Trucks | 21.7% |
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| Average travel time | 64.4 min |
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| Congestion ratio | 14.3% |
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| Drivers’ average age | 47.6 yrs |
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| Drivers’ average income | $75,567 |
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Highways carry more than half of all travel in Monona County, Iowa (69% of vehicle-miles). The average highway carries 6,823 vehicles per day, 449% more than the average non-highway road in the same area, which carries 1,243 vehicles per day.
Yet highways are only 18% of the road network, 52 miles in 28 segments, so each mile of them is 3.8 times as busy as the average road mile.
65% of counties in Iowa move less traffic on their highways.
Higher highway truck share than 80% of counties in Iowa
Highway truck concentration here runs 35% higher than the state average, at 21.7%. Highways here lean toward freight, so highway access is a real asset for logistics operators.
By truck concentration, highways here outrank 80% of counties in Iowa. 75% of counties in Iowa see fewer highway trucks per day than Monona's roughly 1,478.

Non-highway Traffic in Monona County, Iowa
| Traffic | vehicles per day1,243 |
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| Trucks | 8.2% |
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| Average travel time | 33.4 min |
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| Congestion ratio | 11.1% |
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| Drivers’ average age | 52.1 yrs |
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| Drivers’ average income | $66,643 |
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A significant share of driving in Monona County, Iowa, 31% of vehicle-miles, happens on local roads. A typical local road sees 1,243 vehicles per day.
Spread over 233 miles and 1,335 segments, 82% of the road network, local roads carry a lighter load per mile: 181,070 vehicle-miles traveled per day (≈66.1 million per year). About 1 in 12 vehicles on non-highway roads is a truck (8.2%).
Drivers from lower-income areas than 67% of counties in Iowa
Compared to highways, non-highway routes see 62% fewer trucks by share.
Non-highway congestion here (11.1%) closely tracks the state average.
Trip origins here have lower average income than 67% of counties in Iowa. The driver population here skews older than 50% of counties in Iowa.