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Traffic heat map of Sutter County, California: 410 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Bernie Richter Memorial Highway

Sutter County, California Traffic Counts

TrafficZoom tracks traffic on 410 road miles in Sutter County, California, divided into 6,327 segments averaging 342 ft. Its busiest road, Bernie Richter Memorial Highway, carries 72,239 vehicles a day, 11.2 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 Sutter County, California

Traffic

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

vehicles per day6,453
Trucks

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

8.8%
Average travel time

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

32.6 min
Congestion ratio

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

15.3%
Drivers’ average age

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

43.5 yrs
Drivers’ average income

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

$85,774

A typical monitored road in Sutter County, California sees 6,453 vehicles per day, while its 410 miles of monitored roads together handle 2,634,833 vehicle-miles traveled per day (≈962 million per year). Trucks are 8.8% of traffic, close to the 7.8% across California.

Traffic 49% below the California average

At 6,453 vehicles per day, the average monitored road in Sutter carries 49% less traffic than the state average of 12,766, suggesting less demand on each road - lighter roads for freight, but less passing trade for roadside retail. In total volume terms, its road network carries about 0.3% of California's statewide total of vehicle-miles. By volume, Sutter's 6,453 vehicles per day outpaces 51% of counties in California.

Journey times run 5% lower than the state level, at 32.6 minutes on average. On travel time, Sutter runs shorter than 68% of counties in California.

At 44% lower than the state level, the 15.3% congestion ratio signals smoother traffic flow - travel times are easy to plan around for scheduled deliveries.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Sutter County, California

Trafficvehicles per day19,914
Trucks10.3%
Average travel time37.4 min
Congestion ratio33.5%
Drivers’ average age43.4 yrs
Drivers’ average income$85,844

A little more than half of the driving in Sutter County, California happens on highways: 68% of all vehicle-miles. The average highway carries 19,914 vehicles per day, 352% more than the average non-highway road in the same area, which carries 4,404 vehicles per day.

With 25% of the road miles (102 miles in 836 segments), highways punch above their length, carrying 1,803,673 vehicle-miles traveled per day (≈658 million per year).

Fewer highway trucks than 71% of counties in California

Highway truck concentration here (10.3%) closely tracks the state average for similar road classifications. The highway traffic mix is typical for California: neither freight- nor commuter-dominated.

53% of counties in California see a higher highway truck share than Sutter's 10.3%. By raw truck volume, Sutter carries fewer highway trucks than 71% of counties in California.

non-highway traffic icon

Non-highway Traffic in Sutter County, California

Trafficvehicles per day4,404
Trucks5.4%
Average travel time31.9 min
Congestion ratio12.5%
Drivers’ average age43.5 yrs
Drivers’ average income$85,691

Local roads carry a significant share of travel in Sutter County, California: 32% of all vehicle-miles. On the average non-highway road, that comes to 4,404 vehicles per day.

Local roads make up 75% of the monitored road miles (308 miles in 5,491 segments) but carry less than their share of travel: 831,161 vehicle-miles traveled per day (≈303 million per year). About 1 in 19 vehicles on non-highway roads is a truck (5.4%).

Local congestion 53% below the California average

Compared to highways, non-highway routes see 48% fewer trucks by share.

The non-highway congestion ratio of 12.5% is 53% lower than the state level, suggesting more efficient local mobility than the state average.

Trip origins here have lower average income than 54% of counties in California. 65% of counties in California have an older driver population than Sutter.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–9:00 AM and a long afternoon plateau from 3:00 PM to 8:00 PM, with volumes reaching approximately 74% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 15% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
September–November is the high season, with volumes +6% versus the annual average.
Lowest month:
January is the quietest month, with volumes -12% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Sutter County, California, the peak hour concentrates about 7% of the day's traffic, and there is a noticeable seasonal swing of +6% in high season.

Sutter County vs. California Traffic Comparison

Of the four measures, average daily traffic per road differs most: Sutter County runs 49% below the California average.

MetricSutter CountyCalifornia averageDifference
Traffic6,45312,766-49.4%
Truck % (Total Traffic)8.8%7.8%+12.7%
Truck % (Highway)10.3%10.4%-0.5%
Avg. Travel Time32.6 min34.5 min-5.4%

How Sutter County compares

Sutter County against nearby counties

Nothing in this table sets Sutter County sharply apart from the 4 areas nearest to it, though it has the second busiest roads of the five.

Sutter 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
Sutter County6,4538.8%2,634,83332.6 min15.3%
Yuba County, California5,8588.6%1,639,64933.0 min18.0%
Colusa County, California3,19121.1%1,487,58839.5 min10.1%
Yolo County, California6,49911.8%5,669,59433.4 min17.9%
Nevada County, California5,05712.8%2,915,32232.3 min15.8%
California average12,7667.8%N/A34.5 min27.4%

Sutter County ranked within California

Sutter County ranked among 58 county-level areas in California (1 = highest); measures without data in every county rank a smaller field, down to 52.
MeasureSutter CountyCalifornia rank
Traffic volume (AADT)6,453#29 of 58
Highway vehicle-miles per day1,803,673#35 of 52
Truck share on highways10.3%#28 of 52
Highway trucks per day2,057#37 of 52
Average travel time32.6 min#40 of 58
Average driver income$85,774#32 of 58
Average driver age43.5 yrs#38 of 58

Busiest roads in Sutter County, California

On their busiest stretches, the three busiest roads in Sutter County carry 53,096 vehicles a day on average, 8.2 times the typical road in the county (6,453).

Bernie Richter Memorial Highway is the busiest road, at 72,239 vehicles a day, 7,005 of them trucks (9.7%). That is 65% more than the next road, Colusa Avenue (43,690). It also carries the most trucks.

Bernie Richter Memorial Highway carries longer journeys than most roads here, with a median trip of 43.4 minutes against 32.6 county-wide.

Colusa Avenue is busy with cars rather than freight: only 4.0% of its traffic is trucks, against 8.8% county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Bernie Richter Memorial HighwayTrunk road · 72,239vehicles7,005trucks · 9.7%
Road class
Trunk road
Congestion ratio
73.5%
Median trip time
43.4 min
Drivers’ median age
41.9 yrs
Drivers’ average income
$97,580

Bernie Richter Memorial Highway is one of the more congested roads here: trips take 74% longer than at free-flow speed, against 15% county-wide.

2Colusa AvenueTrunk road · 43,690vehicles1,743trucks · 4.0%
Road class
Trunk road
Congestion ratio
46.5%
Median trip time
31.7 min
Drivers’ median age
43.3 yrs
Drivers’ average income
$72,740

Colusa Avenue is a trunk route for the county, carrying 6.8 times the county average on its busiest stretch; trucks are 4.0% of it, below the county-wide 8.8%.

3CA 20Trunk road · 43,357vehicles1,908trucks · 4.4%
Road class
Trunk road
Congestion ratio
57.1%
Median trip time
31.0 min
Drivers’ median age
43.5 yrs
Drivers’ average income
$72,225

Delays build on CA 20: its congestion ratio of 57% over free-flow time is well above the county's 15%.

4Golden State HighwayMotorway · 43,036vehicles5,453trucks · 12.7%
Road class
Motorway
Congestion ratio
55.3%
Median trip time
42.7 min
Drivers’ median age
42.2 yrs
Drivers’ average income
$101,953

Golden State Highway carries through traffic: the median trip using it lasts 42.7 minutes, against 32.6 for the county.

510th StreetTrunk road · 41,929vehicles2,080trucks · 5.0%
Road class
Trunk road
Congestion ratio
50.6%
Median trip time
31.6 min
Drivers’ median age
43.5 yrs
Drivers’ average income
$72,087

10th Street carries 6.5 times the county average at its busiest, 2,080 of them trucks (5.0%, below the county-wide 8.8%).

Ranked by trucks per day

Cars and light vehiclesTrucks
1Bernie Richter Memorial HighwayTrunk road · #1 by traffic72,239vehicles7,005trucks · 9.7%
2Golden State HighwayMotorway · #4 by traffic43,036vehicles5,453trucks · 12.7%
3CA 70Trunk road · 38,496vehicles4,548trucks · 11.8%
Road class
Trunk road
Congestion ratio
41.0%
Median trip time
40.7 min
Drivers’ median age
40.3 yrs
Drivers’ average income
$100,777

CA 70 carries 6.0 times the county average on its busiest stretch, where the median trip lasts 40.7 minutes.

4CA 99Trunk road · 22,098vehicles2,279trucks · 10.3%
Road class
Trunk road
Congestion ratio
24.4%
Median trip time
41.8 min
Drivers’ median age
44.2 yrs
Drivers’ average income
$88,648

CA 99 carries 3.4 times the county average at its busiest, 2,279 of them trucks (10.3%, above the county-wide 8.8%).

510th StreetTrunk road · #5 by traffic41,929vehicles2,080trucks · 5.0%
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

SutterDepartment 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 Sutter County

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

Need segment-level traffic data?

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