
Total Traffic Volume & Performance in Clay County, Missouri
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day8,643 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 7.4% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 30.2 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. | 23.4% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 44.8 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $98,498 |
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The average monitored road in Clay County, Missouri carries 8,643 vehicles per day. Across its 661 miles of monitored roads, that adds up to 6,918,570 vehicle-miles traveled per day (≈2.5 billion per year). Trucks are a smaller part of the mix than across Missouri: 7.4% against 9.8%.
Busier roads than 96% of counties in Missouri
Clay sees 53% higher average daily traffic volume than the state average (8,643 vehicles per day against 5,631), suggesting more demand on each road - prime passing trade for storefronts, with more competition for road space. Across the whole network, that travel is about 4.0% of Missouri's statewide total. Clay carries more traffic than 96% of counties in Missouri.
The average trip takes 30.2 minutes, on par with the state level. On travel time, Clay runs shorter than 77% of counties in Missouri.
Congestion runs 20% higher than the state level, at a ratio of 23.4%, which means more pronounced congestion - crucial for traffic control improvement and logistics planning.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Clay County, Missouri
| Traffic | vehicles per day22,265 |
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| Trucks | 9.2% |
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| Average travel time | 32.7 min |
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| Congestion ratio | 53.3% |
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| Drivers’ average age | 45.0 yrs |
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| Drivers’ average income | $97,323 |
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Highways carry more than half of all travel in Clay County, Missouri (63% of vehicle-miles). The average highway carries 22,265 vehicles per day, 213% more than the average non-highway road in the same area, which carries 7,121 vehicles per day.
With 33% of the road miles (216 miles in 1,221 segments), highways punch above their length, carrying 4,386,132 vehicle-miles traveled per day (≈1.6 billion per year).
No more than 4 other counties in Missouri move more traffic on their highways.
Lower highway truck share than 95% of counties in Missouri
The concentration of trucks on highways (9.2%) is 32% lower than the state average for similar road classifications. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.
Clay's highway truck share (9.2%) is lower than 95% of counties in Missouri. Clay's highway truck count is higher than 73% of counties in Missouri, at roughly 2,046 trucks per day.

Non-highway Traffic in Clay County, Missouri
| Traffic | vehicles per day7,121 |
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| Trucks | 4.4% |
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| Average travel time | 29.9 min |
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| Congestion ratio | 20.1% |
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| Drivers’ average age | 44.6 yrs |
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| Drivers’ average income | $100,342 |
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Local roads carry a significant share of travel in Clay County, Missouri: 37% of all vehicle-miles. The average non-highway road carries 7,121 vehicles per day.
Spread over 445 miles and 10,923 segments, 67% of the road network, local roads carry a lighter load per mile: 2,532,439 vehicle-miles traveled per day (≈924 million per year). The truck share on non-highway roads is 4.4%.
Drivers from higher-income areas than 97% of counties in Missouri
The concentration of trucks on non-highway roads is 52% lower than on highways.
Non-highway congestion (20.1%) runs slightly higher than the state level (8% higher).
Trip origins here have higher average income than 97% of counties in Missouri. The driver population here skews younger than 93% of counties in Missouri.