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Traffic heat map of Solano County, California: 926 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 80 and Carquinez Bridge

Solano County, California Traffic Counts

TrafficZoom tracks traffic on 926 road miles in Solano County, California, divided into 18,916 segments averaging 259 ft. Its busiest road, I 80, carries 189,804 vehicles a day, 18.6 times the average road. Built from cross-verified mobile and road-sensor data, these counts help you size up a retail site, plan logistics routes or assess infrastructure needs.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
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Total Traffic Volume & Performance in Solano County, California

Traffic

The average number of vehicles that travel each day over any road in the road network.

vehicles per day10,208
Trucks

The percentage of the total traffic volume composed of heavy vehicles.

8.2%
Average travel time

The average time of travel averaged among all vehicles traveling on the road network.

32.4 min
Congestion ratio

The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.

25.5%
Drivers’ average age

Average age of residents in the geographic areas where the vehicle trips originated.

44.0 yrs
Drivers’ average income

Average income of residents in the geographic areas where the vehicle trips originated.

$113,116

A typical monitored road in Solano County, California sees 10,208 vehicles per day, while its 926 miles of monitored roads together handle 15,382,407 vehicle-miles traveled per day (≈5.6 billion per year). Trucks are 8.2% of traffic, close to the 7.8% across California.

Busier roads than 75% of counties in California

At 10,208 vehicles per day, the average monitored road in Solano carries 20% less traffic than the state average of 12,766, suggesting less demand on each road - a factor worth weighing in site selection and logistics planning. Network-wide, Solano accounts for about 1.7% of California's statewide total of vehicle-miles. 75% of counties in California see less traffic than Solano's 10,208 vehicles per day.

The average trip takes 32.4 minutes, 6% lower than the state level. 73% of counties in California have a longer average travel time than Solano's 32.4 minutes.

Congestion is somewhat lower than the state level, at a ratio of 25.5% (7% lower).

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Solano County, California

Trafficvehicles per day41,104
Trucks10.0%
Average travel time50.6 min
Congestion ratio65.3%
Drivers’ average age43.7 yrs
Drivers’ average income$113,811

A little more than half of the driving in Solano County, California happens on highways: 70% of all vehicle-miles. The average highway carries 41,104 vehicles per day, 379% more than the average non-highway road in the same area, which carries 8,586 vehicles per day.

With 26% of the road miles (240 miles in 944 segments), highways punch above their length, carrying 10,717,920 vehicle-miles traveled per day (≈3.9 billion per year).

76% of counties in California move less traffic on their highways.

More highway trucks than 82% of counties in California

At 10.0%, the highway truck share matches the state average for similar road classifications. The highway traffic mix is typical for California: neither freight- nor commuter-dominated.

By truck concentration, highways here trail 63% of counties in California. 82% of counties in California see fewer highway trucks per day than Solano's roughly 4,115.

non-highway traffic icon

Non-highway Traffic in Solano County, California

Trafficvehicles per day8,586
Trucks4.2%
Average travel time31.4 min
Congestion ratio23.4%
Drivers’ average age44.4 yrs
Drivers’ average income$112,248

A significant share of driving in Solano County, California, 30% of vehicle-miles, happens on local roads. On the average non-highway road, that comes to 8,586 vehicles per day.

Local roads make up 74% of the monitored road miles (687 miles in 17,972 segments) but carry less than their share of travel: 4,664,486 vehicle-miles traveled per day (≈1.7 billion per year). About 1 in 24 vehicles on non-highway roads is a truck (4.2%).

Drivers from higher-income areas than 77% of counties in California

The concentration of trucks on non-highway roads is 58% lower than on highways.

Non-highway congestion (23.4%) runs slightly lower than the state level (12% lower).

Solano's average driver income is higher than 77% of counties in California. 58% of counties in California have an older driver population than Solano.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In Solano County, California, the peak hour concentrates about 7% of the day's traffic.

Solano County vs. California Traffic Comparison

The average daily traffic per road sets Solano County apart: 20% below the California average.

MetricSolano CountyCalifornia averageDifference
Traffic10,20812,766-20.0%
Truck % (Total Traffic)8.2%7.8%+6.2%
Truck % (Highway)10.0%10.4%-3.6%
Avg. Travel Time32.4 min34.5 min-6.2%

How Solano County compares

Solano County against nearby counties

Solano County tracks the 4 areas around it closely - no measure in this table sets it far apart from the areas immediately next to it, though it has the third busiest roads of the five.

Solano County and the 4 nearest county-level areas by centroid distance, with the California average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Solano County10,2088.2%15,382,40732.4 min25.5%
Contra Costa County, California11,9386.1%25,822,58330.6 min31.6%
Yolo County, California6,49911.8%5,669,59433.4 min17.9%
Napa County, California6,4276.9%3,100,05333.9 min19.9%
Sacramento County, California11,8025.8%33,124,74633.3 min27.9%
California average12,7667.8%N/A34.5 min27.4%

Solano County ranked within California

Highway truck volume places Solano County #10 of 52 in California - the top quarter of the state.

Solano County ranked among 58 county-level areas in California (1 = highest); measures without data in every county rank a smaller field, down to 52.
MeasureSolano CountyCalifornia rank
Traffic volume (AADT)10,208#15 of 58
Highway vehicle-miles per day10,717,920#13 of 52
Truck share on highways10.0%#33 of 52
Highway trucks per day4,115#10 of 52
Average travel time32.4 min#42 of 58
Average driver income$113,116#14 of 58
Average driver age44.0 yrs#34 of 58

Busiest roads in Solano County, California

Traffic concentrates on a few corridors: the three busiest roads average 149,907 vehicles a day, against 10,208 on the average road in Solano County.

I 80 is the busiest road, at 189,804 vehicles a day, 15,469 of them trucks (8.2%). Carquinez Bridge carries the most trucks, 18,389 a day (13.9% of its traffic), although it ranks #2 for all traffic.

Trips using I 80 are long: a median of 52.3 minutes against 32.4 county-wide, the mark of a through route.

Freight stands out on Carquinez Bridge and Eastshore Freeway: trucks are 13.9% and 13.8% of the traffic there, against 8.2% county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 80Motorway · 189,804vehicles15,469trucks · 8.2%
Road class
Motorway
Congestion ratio
74.7%
Median trip time
52.3 min
Drivers’ median age
44.4 yrs
Drivers’ average income
$115,555

I 80 carries 18.6 times the county average on its busiest stretch, where the median trip lasts 52.3 minutes.

2Carquinez BridgeMotorway · 132,571vehicles18,389trucks · 13.9%
Road class
Motorway
Congestion ratio
84.5%
Median trip time
49.1 min
Drivers’ median age
44.3 yrs
Drivers’ average income
$114,241

Delays build on Carquinez Bridge: its congestion ratio of 84% over free-flow time is well above the county's 26%.

3Eastshore FreewayMotorway · 127,345vehicles17,640trucks · 13.8%
Road class
Motorway
Congestion ratio
82.3%
Median trip time
48.2 min
Drivers’ median age
44.6 yrs
Drivers’ average income
$113,439

At 12.5 times the county average, Eastshore Freeway draws drivers from neighborhoods averaging $113,439 in household income.

4Benicia-Martinez BridgeMotorway · 96,499vehicles11,515trucks · 11.9%
Road class
Motorway
Congestion ratio
65.6%
Median trip time
45.4 min
Drivers’ median age
44.7 yrs
Drivers’ average income
$123,907

A main artery: Benicia-Martinez Bridge's busiest stretch carries 9.5 times the county average; trucks are 11.9% of it, above the county-wide 8.2%.

5Luther E Gibson FreewayMotorway · 81,487vehicles9,897trucks · 12.2%
Road class
Motorway
Congestion ratio
93.3%
Median trip time
49.8 min
Drivers’ median age
44.0 yrs
Drivers’ average income
$129,241

Travel on Luther E Gibson Freeway's busiest stretch runs 93% over free-flow time, against 26% across the county, so expect slower peak hours.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Carquinez BridgeMotorway · #2 by traffic132,571vehicles18,389trucks · 13.9%
2Eastshore FreewayMotorway · #3 by traffic127,345vehicles17,640trucks · 13.8%
3I 80Motorway · #1 by traffic189,804vehicles15,469trucks · 8.2%
4Benicia-Martinez BridgeMotorway · #4 by traffic96,499vehicles11,515trucks · 11.9%
5Luther E Gibson FreewayMotorway · #5 by traffic81,487vehicles9,897trucks · 12.2%
How to read these road counts
  • The first number is AADT, annual average daily traffic: the vehicles passing a point on an average day, both directions combined and trucks included. On a divided highway both carriageways are added together.
  • Traffic changes along a road, with more near interchanges and towns and less in open country. Every figure for a road describes its busiest stretch in the county, so the two rankings show the same numbers for the same road.
  • The second number is the trucks on that stretch, a part of its AADT. The bar splits the AADT into cars and light vehicles (blue) and trucks (amber).
  • See segment-level AADT for any road on TrafficZoom.

Data Sources & Methodology

The data presented on this page is derived from TrafficZoom's proprietary analytics platform, which aggregates and normalizes information from multiple sources, including:

Mobile device location data (anonymized and aggregated)

Road sensor networks and traffic counters

Historical traffic pattern databases

Public traffic count programs published by the

SolanoDepartment of Transportation

Demographic Baseline for O-D Modeling

U.S. Census Bureau
All metrics represent estimates based on statistical modeling and are intended for strategic planning purposes.
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Data current as of:
Q3 2026

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Counties near Solano County

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

Need segment-level traffic data?

Identify traffic patterns street by street and analyze the exact corridors that matter to your project.