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TrafficThe average number of vehicles that travel each day over any road in the road network. | vehicles per day3,191 |
|---|---|
TrucksThe percentage of the total traffic volume composed of heavy vehicles. | 21.1% |
Average travel timeThe average time of travel averaged among all vehicles traveling on the road network. | 39.5 min |
Congestion ratioThe rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 10.1% |
Drivers’ average ageAverage age of residents in the geographic areas where the vehicle trips originated. | 45.0 yrs |
Drivers’ average incomeAverage income of residents in the geographic areas where the vehicle trips originated. | $79,838 |
A typical monitored road in Colusa County, California sees 3,191 vehicles per day, while its 311 miles of monitored roads together handle 1,487,588 vehicle-miles traveled per day (≈543 million per year). About 1 in 5 vehicles is a truck, well above the 7.8% across California - a freight-heavy mix.
Colusa's average daily traffic volume is 75% lower than the state average - 3,191 vehicles per day against 12,766 - suggesting less traffic load per road - quiet roads that suit freight movement more than drive-by retail. Across the whole network, that travel is about 0.2% of California's statewide total. 84% of counties in California see more traffic than Colusa's 3,191 vehicles per day.
Journey times run 15% higher than the state level, at 39.5 minutes on average. 89% of counties in California have a shorter average travel time than Colusa's 39.5 minutes.
The congestion ratio of 10.1% is 63% lower, pointing to smoother traffic flow than the state level - free-flowing roads make scheduled deliveries highly predictable.
| Traffic | vehicles per day9,665 |
|---|---|
| Trucks | 23.4% |
| Average travel time | 58.2 min |
| Congestion ratio | 24.5% |
| Drivers’ average age | 45.2 yrs |
| Drivers’ average income | $81,018 |
The vast majority of driving in Colusa County, California happens on highways: 84% of all vehicle-miles. The average highway carries 9,665 vehicles per day, 558% more than the average non-highway road in the same area, which carries 1,469 vehicles per day.
With 35% of the road miles (111 miles in 500 segments), highways punch above their length, carrying 1,256,518 vehicle-miles traveled per day (≈459 million per year).
Highway truck concentration here runs 126% higher than the state average, at 23.4%. That marks Colusa as a major freight corridor, where highway access is what logistics operators compete on.
96% of counties in California see a lower highway truck share than Colusa's 23.4%. 55% of counties in California see more highway trucks per day than Colusa's roughly 2,263.
| Traffic | vehicles per day1,469 |
|---|---|
| Trucks | 8.5% |
| Average travel time | 34.5 min |
| Congestion ratio | 6.3% |
| Drivers’ average age | 43.9 yrs |
| Drivers’ average income | $76,655 |
At 16% of vehicle-miles, local roads carry a smaller share of the traffic in Colusa County, California than highways. The average non-highway road carries 1,469 vehicles per day.
Spread over 201 miles and 1,879 segments, 65% of the road network, local roads carry a lighter load per mile: 231,069 vehicle-miles traveled per day (≈84.3 million per year). Trucks make up 8.5% of non-highway traffic, about 1 in 12 vehicles.
Non-highway roads carry a truck concentration that's 64% lower than the highway network.
At 76% lower than the state level, the non-highway congestion ratio of 6.3% signals easier movement on local roads.
Trip origins here have lower average income than 67% of counties in California. Colusa's median driver age is higher than 51% of counties in California.
The truck share sets Colusa County apart: 171% above the California average. Its highway truck share is also 126% above.
| Metric | Colusa County | California average | Difference |
|---|---|---|---|
| Traffic | 3,191 | 12,766 | -75.0% |
| Truck % (Total Traffic) | 21.1% | 7.8% | +171.4% |
| Truck % (Highway) | 23.4% | 10.4% | +125.5% |
| Avg. Travel Time | 39.5 min | 34.5 min | +14.6% |
Against the 4 nearest areas, Colusa County is 36.7% less congested and runs 9.3 percentage points more truck traffic; it has the fourth busiest roads of the five. Freight passes through here that never reaches the areas around it: the truck share is high precisely because the local car traffic is not.
| Area | Average daily traffic | Truck share | Daily vehicle-miles | Average travel time | Congestion ratio |
|---|---|---|---|---|---|
| Colusa County | 3,191 | 21.1% | 1,487,588 | 39.5 min | 10.1% |
| Sutter County, California | 6,453 | 8.8% | 2,634,833 | 32.6 min | 15.3% |
| Lake County, California | 6,159 | 7.4% | 1,447,766 | 38.4 min | 19.1% |
| Glenn County, California | 2,803 | 19.2% | 1,075,542 | 33.3 min | 11.7% |
| Yolo County, California | 6,499 | 11.8% | 5,669,594 | 33.4 min | 17.9% |
| California average | 12,766 | 7.8% | N/A | 34.5 min | 27.4% |
Colusa County sits in California's top three on truck share on highways.
| Measure | Colusa County | California rank |
|---|---|---|
| Traffic volume (AADT) | 3,191 | #49 of 58 |
| Highway vehicle-miles per day | 1,256,518 | #39 of 52 |
| Truck share on highways | 23.4% | #3 of 52 |
| Highway trucks per day | 2,263 | #29 of 52 |
| Average travel time | 39.5 min | #7 of 58 |
| Average driver income | $79,838 | #39 of 58 |
| Average driver age | 45.0 yrs | #29 of 58 |
The two ends of this table sit far apart: #3 of 52 on truck share on highways, against #49 of 58 on average daily traffic volume.
The three busiest roads in Colusa County average 18,532 vehicles a day, 5.8 times the county average of 3,191 across all its monitored roads.
Side Highway leads with 28,943 vehicles a day, 7,381 of them trucks (25.5%). No other road comes close: Bridge Street, in second place, carries 13,485. It tops the truck ranking too, with the most trucks.
Side Highway carries longer journeys than most roads here, with a median trip of 69.4 minutes against 39.5 county-wide.
Market Street is busy with cars rather than freight: only 9.8% of its traffic is trucks, against 21.1% county-wide.
Travel on Side Highway's busiest stretch runs 33% over free-flow time, against 10% across the county, so expect slower peak hours.
Bridge Street is one of the more congested roads here: trips take 40% longer than at free-flow speed, against 10% county-wide.
On its busiest stretch, Market Street carries 4.1 times the county average; trucks are 9.8% of it, below the county-wide 21.1%.
CA 20 / CA 45 peaks at 9,823 vehicles a day, 3.1 times the county average; trucks are 9.4% of it, below the county-wide 21.1%.
CA 20 carries 2.9 times the county average at its busiest, 984 of them trucks (10.7%, below the county-wide 21.1%).
The average monitored road in Colusa carries 3,191 vehicles per day, 75% less than the California average of 12,766.
Colusa's highway truck share of 23.4% is higher than 96% of counties in California.
Weekday traffic has two busy windows: a long morning plateau from 7:00 AM to 12:00 PM and a long afternoon plateau from 2:00 PM to 7:00 PM - about 71% above the daily average.
Trucks make up about 21.1% of all traffic in Colusa County, California, rising to 23.4% on highways, where long-haul freight concentrates.
The average trip in Colusa takes 39.5 minutes, 15% longer than the California average of 34.5 minutes, delays at signals and congestion included.
Approximately 19% of highway traffic and 7% of non-highway traffic consists of vehicles whose trip originates outside Colusa County, California. Even highway traffic is mostly local, so these roads mainly serve residents and commuters.
Side Highway carries the most, 28,943 vehicles per day on its busiest stretch, followed by Bridge Street (13,485), Market Street (13,167), CA 20 / CA 45 (9,823), CA 20 (9,223). Figures are AADT, both directions combined.
Side Highway, with about 7,381 trucks per day on its busiest stretch, 25.5% of its 28,943 vehicles.
About 28,943 vehicles per day in both directions on its busiest stretch, including 7,381 trucks (25.5%). Traffic is lower on its quieter stretches; TrafficZoom shows the count for every segment.

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The same traffic breakdown for the areas closest to Colusa County, California.
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