
Total Traffic Volume & Performance in Middlesex County, Connecticut
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day5,542 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 9.1% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 30.5 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. | 14.9% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 49.9 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $111,135 |
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Our data shows 5,542 vehicles per day on the average road in Middlesex County, Connecticut, and 3,838,692 vehicle-miles traveled per day (≈1.4 billion per year) across its 508 miles of monitored roads. Trucks are 9.1% of traffic, close to the 8.4% across Connecticut.
The shortest trips of any county in Connecticut
Middlesex sees 18% lower average daily traffic volume than the state average (5,542 vehicles per day against 6,794), suggesting less demand on each road - a factor worth weighing in site selection and logistics planning. In total volume terms, its road network carries about 6.1% of Connecticut's statewide total of vehicle-miles. 57% of counties in Connecticut see more traffic than Middlesex's 5,542 vehicles per day.
At 30.5 minutes, the average travel time is 8% lower than the state level. It also posts the lowest average travel time in Connecticut, at 30.5 minutes.
The congestion ratio of 14.9% runs slightly lower than the state level (13% lower) - crucial for traffic control improvement and logistics planning.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Middlesex County, Connecticut
| Traffic | vehicles per day17,176 |
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| Trucks | 11.9% |
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| Average travel time | 41.7 min |
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| Congestion ratio | 36.8% |
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| Drivers’ average age | 49.2 yrs |
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| Drivers’ average income | $109,122 |
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Highways carry more than half of all travel in Middlesex County, Connecticut (61% of vehicle-miles). The average highway carries 17,176 vehicles per day, 278% more than the average non-highway road in the same area, which carries 4,540 vehicles per day.
With 24% of the road miles (121 miles in 1,159 segments), highways punch above their length, carrying 2,331,609 vehicle-miles traveled per day (≈851 million per year).
A typical mix of freight and passenger traffic
Highway truck concentration here (11.9%) closely tracks the state average for similar road classifications. The highway traffic mix is typical for Connecticut: neither freight- nor commuter-dominated.
Middlesex's highway truck share (11.9%) is lower than 57% of counties in Connecticut. Middlesex's highway truck count is lower than 57% of counties in Connecticut, at roughly 2,053 trucks per day.

Non-highway Traffic in Middlesex County, Connecticut
| Traffic | vehicles per day4,540 |
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| Trucks | 4.6% |
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| Average travel time | 29.6 min |
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| Congestion ratio | 13.0% |
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| Drivers’ average age | 51.0 yrs |
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| Drivers’ average income | $113,180 |
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A significant share of driving in Middlesex County, Connecticut, 39% of vehicle-miles, happens on local roads. On the average non-highway road, that comes to 4,540 vehicles per day.
Local roads make up 76% of the monitored road miles (387 miles in 13,454 segments) but carry less than their share of travel: 1,507,083 vehicle-miles traveled per day (≈550 million per year). The truck share on non-highway roads is 4.6%.
Older drivers than 86% of counties in Connecticut
Non-highway roads carry a truck concentration that's 61% lower than the highway network.
At 17% lower than the state level, the non-highway congestion ratio of 13.0% signals easier movement on local roads.
Trip origins here have higher average income than 71% of counties in Connecticut. 86% of counties in Connecticut have a younger driver population than Middlesex.