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Traffic heat map of Kootenai County, Idaho: 735 miles of roads shaded from blue (light) to red (heavy traffic), busiest on 4th Street and US 95

Kootenai County, Idaho Traffic Counts

TrafficZoom tracks traffic on 735 road miles in Kootenai County, Idaho, divided into 12,422 segments averaging 312 ft. It is one of the top 5 counties in Idaho for highway travel volume. 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 Kootenai County, Idaho

Traffic

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

vehicles per day5,955
Trucks

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

6.7%
Average travel time

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

35.2 min
Congestion ratio

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

19.5%
Drivers’ average age

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

47.1 yrs
Drivers’ average income

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

$77,819

The average monitored road in Kootenai County, Idaho carries 5,955 vehicles per day. Across its 735 miles of monitored roads, that adds up to 3,854,991 vehicle-miles traveled per day (≈1.4 billion per year). About 1 in 15 vehicles is a truck, fewer than the 1 in 10 across Idaho.

Busier roads than 88% of counties in Idaho

Kootenai's average daily traffic volume of 5,955 vehicles per day is on par with the state average of 5,734. In total volume terms, its road network carries about 8.5% of Idaho's statewide total of vehicle-miles. 88% of counties in Idaho see less traffic than Kootenai's 5,955 vehicles per day.

At 35.2 minutes, the average travel time matches the state level closely. Its average travel time of 35.2 minutes is longer than 65% of counties in Idaho.

Congestion runs 22% higher than the state level, at a ratio of 19.5%, which means more pronounced congestion - crucial for traffic control improvement and logistics planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Kootenai County, Idaho

Trafficvehicles per day11,909
Trucks9.3%
Average travel time35.4 min
Congestion ratio33.6%
Drivers’ average age47.7 yrs
Drivers’ average income$76,615

Highways carry a significant share of travel in Kootenai County, Idaho: 42% of all vehicle-miles. The average highway carries 11,909 vehicles per day, 110% more than the average non-highway road in the same area, which carries 5,677 vehicles per day.

With 23% of the road miles (168 miles in 554 segments), highways punch above their length, carrying 1,637,298 vehicle-miles traveled per day (≈598 million per year).

That puts Kootenai among the top 5 counties in Idaho for highway travel volume.

Lower highway truck share than 76% of counties in Idaho

Highway truck concentration here runs 34% lower than the state average, at 9.3%. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

Kootenai's highway truck share (9.3%) is lower than 76% of counties in Idaho. By raw truck volume, Kootenai carries more highway trucks than 62% of counties in Idaho.

non-highway traffic icon

Non-highway Traffic in Kootenai County, Idaho

Trafficvehicles per day5,677
Trucks4.8%
Average travel time35.2 min
Congestion ratio18.9%
Drivers’ average age47.0 yrs
Drivers’ average income$78,428

Local roads carry more than half of all travel in Kootenai County, Idaho (58% of vehicle-miles). On the average non-highway road, that comes to 5,677 vehicles per day.

Local roads make up 77% of the monitored road miles (567 miles in 11,868 segments) but carry less than their share of travel: 2,217,693 vehicle-miles traveled per day (≈809 million per year). Trucks make up 4.8% of non-highway traffic, about 1 in 21 vehicles.

Drivers from higher-income areas than 86% of counties in Idaho

Compared to highways, non-highway routes see 49% fewer trucks by share.

The non-highway congestion ratio of 18.9% is 15% higher than the state level, suggesting slower local mobility than the state average.

Trip origins here have higher average income than 86% of counties in Idaho. 53% of counties in Idaho have a younger driver population than Kootenai.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and PM peak 2:00 PM–5:00 PM, with volumes reaching approximately 80% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 14% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +22% versus the annual average.
Lowest month:
January is the quietest month, with volumes -20% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Kootenai County, Idaho, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +22% in high season.

Kootenai County vs. Idaho Traffic Comparison

Kootenai County's biggest difference from the Idaho average is its highway truck share, 34% below it. Its truck share is also 31% below.

MetricKootenai CountyIdaho averageDifference
Traffic5,9555,734+3.9%
Truck % (Total Traffic)6.7%9.7%-30.6%
Truck % (Highway)9.3%14.1%-33.9%
Avg. Travel Time35.2 min33.8 min+4.2%

How Kootenai County compares

Kootenai County against nearby counties

Compared with its 4 closest neighbours, Kootenai County carries 48.3% more traffic on a typical road; it has the second busiest roads of the five. Bigger and busier at once: more road than the areas around it and heavier traffic on it, which makes it the centre of gravity for travel in this part of the map.

Kootenai County and the 4 nearest county-level areas by centroid distance, with the Idaho average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Kootenai County5,9556.7%3,854,99135.2 min19.5%
Benewah County, Idaho2,83511.4%175,95238.2 minN/A
Shoshone County, Idaho2,00018.4%412,28430.7 minN/A
Spokane County, Washington7,3905.8%10,252,50333.4 min19.6%
Latah County, Idaho3,8417.5%416,48830.0 min17.3%
Idaho average5,7349.7%N/A33.8 min16.0%

Kootenai County ranked within Idaho

Kootenai County sits in the top quarter of the Idaho field on highway travel volume, at #4 of 35.

Kootenai County ranked among 44 county-level areas in Idaho (1 = highest); measures without data in every county rank a smaller field, down to 35.
MeasureKootenai CountyIdaho rank
Traffic volume (AADT)5,955#6 of 44
Highway vehicle-miles per day1,637,298#4 of 35
Truck share on highways9.3%#27 of 35
Highway trucks per day1,108#14 of 35
Average travel time35.2 min#15 of 44
Average driver income$77,819#7 of 44
Average driver age47.1 yrs#21 of 44

The two ends of this table sit far apart: #4 of 35 on highway travel volume, against #27 of 35 on truck share on highways.

Busiest roads in Kootenai County, Idaho

The three busiest roads in Kootenai County average 40,966 vehicles a day, 6.9 times the county average of 5,955 across all its monitored roads.

4th Street leads with 46,729 vehicles a day, 1,372 of them trucks (2.9%). Veterans Memorial Centennial Bridge carries the most trucks, 3,346 a day (17.6% of its traffic), although it is not among the 5 busiest roads overall.

Trucks make up 17.6% of traffic on Veterans Memorial Centennial Bridge, against 6.7% across all roads in the county.

Trips using Veterans Memorial Centennial Bridge are long: a median of 47.6 minutes against 35.2 county-wide, the mark of a through route.

Few trucks use 4th Street: 2.9% of its traffic, under half the county's 6.7%.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
14th StreetPrimary road · 46,729vehicles1,372trucks · 2.9%
Road class
Primary road
Congestion ratio
48.4%
Median trip time
41.4 min
Drivers’ median age
48.0 yrs
Drivers’ average income
$68,067

4th Street is a trunk route for the county, carrying 7.8 times the county average on its busiest stretch; trucks are 2.9% of it, below the county-wide 6.7%.

2US 95Trunk road · 38,413vehicles1,978trucks · 5.2%
Road class
Trunk road
Congestion ratio
49.6%
Median trip time
35.5 min
Drivers’ median age
48.3 yrs
Drivers’ average income
$78,761

Travel on US 95's busiest stretch runs 50% over free-flow time, against 20% across the county, so expect slower peak hours.

3I 90Motorway · 37,757vehicles2,829trucks · 7.5%
Road class
Motorway
Congestion ratio
39.8%
Median trip time
34.5 min
Drivers’ median age
46.9 yrs
Drivers’ average income
$75,192

I 90 carries 6.3 times the county average at its busiest, 2,829 of them trucks (7.5%, above the county-wide 6.7%).

4Northwest BoulevardPrimary road · 31,648vehicles1,286trucks · 4.1%
Road class
Primary road
Congestion ratio
59.9%
Median trip time
27.8 min
Drivers’ median age
47.3 yrs
Drivers’ average income
$70,382

Northwest Boulevard is one of the more congested roads here: trips take 60% longer than at free-flow speed, against 20% county-wide.

5Government WayPrimary road · 29,956vehicles1,160trucks · 3.9%
Road class
Primary road
Congestion ratio
41.6%
Median trip time
38.4 min
Drivers’ median age
47.8 yrs
Drivers’ average income
$74,430

Government Way carries 5.0 times the county average on its busiest stretch, where the median trip lasts 38.4 minutes.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Veterans Memorial Centennial BridgeMotorway · 19,045vehicles3,346trucks · 17.6%
Road class
Motorway
Congestion ratio
21.7%
Median trip time
47.6 min
Drivers’ median age
48.6 yrs
Drivers’ average income
$76,714

On its busiest stretch, Veterans Memorial Centennial Bridge carries 3.2 times the county average; trucks are 17.6% of it, above the county-wide 6.7%.

2I 90Motorway · #3 by traffic37,757vehicles2,829trucks · 7.5%
3US 95Trunk road · #2 by traffic38,413vehicles1,978trucks · 5.2%
4Ramsey RoadPrimary road · 28,724vehicles1,374trucks · 4.8%
Road class
Primary road
Congestion ratio
44.8%
Median trip time
30.4 min
Drivers’ median age
47.4 yrs
Drivers’ average income
$78,908

Ramsey Road peaks at 28,724 vehicles a day, 4.8 times the county average; trucks are 4.8% of it, below the county-wide 6.7%.

54th StreetPrimary road · #1 by traffic46,729vehicles1,372trucks · 2.9%
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

KootenaiDepartment 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 Kootenai County

The same traffic breakdown for the areas closest to Kootenai County, Idaho.

Need segment-level traffic data?

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