
Total Traffic Volume & Performance in Arapahoe County, Colorado
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day8,742 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 6.7% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 32.7 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. | 16.2% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 43.0 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $123,297 |
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A typical monitored road in Arapahoe County, Colorado sees 8,742 vehicles per day, while its 1,070 miles of monitored roads together handle 10,827,702 vehicle-miles traveled per day (≈4.0 billion per year). About 1 in 15 vehicles is a truck, fewer than the 1 in 12 across Colorado.
Busier roads than 97% of counties in Colorado
At 8,742 vehicles per day, the average monitored road in Arapahoe carries 29% more traffic than the state average of 6,752, suggesting more demand on each road - a busier backdrop for retail sites, at the cost of slower access. In total volume terms, its road network carries about 8.5% of Colorado's statewide total of vehicle-miles. Arapahoe carries more traffic than 97% of counties in Colorado.
At 32.7 minutes, the average travel time matches the state level closely. Its average travel time of 32.7 minutes is shorter than 62% of counties in Colorado.
Congestion here (16.2%) closely tracks the state level.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Arapahoe County, Colorado
| Traffic | vehicles per day29,281 |
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| Trucks | 9.9% |
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| Average travel time | 36.0 min |
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| Congestion ratio | 39.2% |
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| Drivers’ average age | 42.9 yrs |
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| Drivers’ average income | $120,710 |
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A significant share of driving in Arapahoe County, Colorado, 41% of vehicle-miles, happens on highways. The average highway carries 29,281 vehicles per day, 271% more than the average non-highway road in the same area, which carries 7,887 vehicles per day.
Highways make up 16% of the monitored road miles (172 miles, 1,078 segments), so they carry more than their share: 4,407,475 vehicle-miles traveled per day (≈1.6 billion per year).
That is more highway travel volume than 89% of counties in Colorado.
More highway trucks than 94% of counties in Colorado
At 9.9%, highway truck share is 12% lower than the state average. The highway traffic mix is typical for Colorado: neither freight- nor commuter-dominated.
Arapahoe's highway truck share (9.9%) is lower than 64% of counties in Colorado. By raw truck volume, Arapahoe carries more highway trucks than 94% of counties in Colorado.

Non-highway Traffic in Arapahoe County, Colorado
| Traffic | vehicles per day7,887 |
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| Trucks | 4.4% |
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| Average travel time | 32.5 min |
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| Congestion ratio | 15.3% |
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| Drivers’ average age | 43.0 yrs |
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| Drivers’ average income | $124,522 |
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Local roads carry more than half of all travel in Arapahoe County, Colorado (59% of vehicle-miles). The average non-highway road carries 7,887 vehicles per day.
Local roads make up 84% of the monitored road miles (897 miles in 25,916 segments) but carry less than their share of travel: 6,420,226 vehicle-miles traveled per day (≈2.3 billion per year). About 1 in 23 vehicles on non-highway roads is a truck (4.4%).
Drivers from higher-income areas than 95% of counties in Colorado
The concentration of trucks on non-highway roads is 55% lower than on highways.
Non-highway congestion here (15.3%) closely tracks the state average.
Arapahoe's average driver income is higher than 95% of counties in Colorado. Arapahoe's median driver age is lower than 87% of counties in Colorado.