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Traffic heat map of Summit County, Utah: 385 miles of roads shaded from blue (light) to red (heavy traffic), busiest on UT 224 and Park Avenue

Summit County, Utah Traffic Counts

How busy are the roads of Summit County, Utah? We measure 385 road miles, divided into 4,180 segments, with multi-sourced, cross-verified mobile and sensor data. Its drivers come from the highest-income neighborhoods of any county in Utah, averaging $131,800. The breakdown below covers volume, trucks, congestion and driver profiles for retailers, logistics planners and engineers.
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 Summit County, Utah

Traffic

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

vehicles per day4,990
Trucks

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

15.9%
Average travel time

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

29.8 min
Congestion ratio

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

4.1%
Drivers’ average age

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

44.2 yrs
Drivers’ average income

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

$131,800

A typical monitored road in Summit County, Utah sees 4,990 vehicles per day, while its 385 miles of monitored roads together handle 2,770,837 vehicle-miles traveled per day (≈1.0 billion per year). Freight weighs heavily here: trucks are 15.9% of traffic, against 8.9% across Utah.

Congestion 81% below the Utah average

At 4,990 vehicles per day, the average monitored road in Summit carries 51% less traffic than the state average of 10,198, suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. Across the whole network, that travel is about 3.2% of Utah's statewide total. Summit carries more traffic than 54% of counties in Utah.

At 29.8 minutes, the average travel time is 7% lower than the state level. Its average travel time of 29.8 minutes is shorter than 89% of counties in Utah.

At 81% lower than the state level, the 4.1% congestion ratio signals smoother traffic flow - delays are rare enough to plan travel times almost to the minute.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Summit County, Utah

Trafficvehicles per day22,194
Trucks17.9%
Average travel time36.8 min
Drivers’ average age43.2 yrs
Drivers’ average income$128,920

The vast majority of driving in Summit County, Utah happens on highways: 82% of all vehicle-miles. The average highway carries 22,194 vehicles per day, 624% more than the average non-highway road in the same area, which carries 3,064 vehicles per day.

With 42% of the road miles (162 miles in 421 segments), highways punch above their length, carrying 2,285,130 vehicle-miles traveled per day (≈834 million per year).

79% of counties in Utah move less traffic on their highways.

More highway trucks than 83% of counties in Utah

At 17.9%, highway truck share is 45% higher than the state average. Highways here lean toward freight, so highway access is a real asset for logistics operators.

62% of counties in Utah see a lower highway truck share than Summit's 17.9%. Summit's highway truck count is higher than 83% of counties in Utah, at roughly 3,979 trucks per day.

non-highway traffic icon

Non-highway Traffic in Summit County, Utah

Trafficvehicles per day3,064
Trucks6.3%
Average travel time29.1 min
Congestion ratio4.1%
Drivers’ average age47.5 yrs
Drivers’ average income$140,754

At 18% of vehicle-miles, local roads carry a smaller share of the traffic in Summit County, Utah than highways. A typical local road sees 3,064 vehicles per day.

Local roads make up 58% of the monitored road miles (224 miles in 3,759 segments) but carry less than their share of travel: 485,707 vehicle-miles traveled per day (≈177 million per year). The truck share on non-highway roads is 6.3%.

The highest driver income of any county in Utah

Compared to highways, non-highway routes see 65% fewer trucks by share.

At 82% lower than the state level, the non-highway congestion ratio of 4.1% signals easier movement on local roads.

At $131,800, the average driver income for trips originating here is the highest in Utah. 61% of counties in Utah have a younger driver population than Summit.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 9:00 AM–12:00 PM and a long afternoon plateau from 2:00 PM to 6:00 PM, with volumes reaching approximately 87% 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:
June–August is the high season, with volumes +18% versus the annual average.
Lowest month:
January is the quietest month, with volumes -17% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Summit County, Utah, the peak hour concentrates about 8% of the day's traffic, and there is a strong seasonal swing of +18% in high season.

Summit County vs. Utah Traffic Comparison

Summit County's biggest difference from the Utah average is its truck share, 78% above it. Its average daily traffic per road, by contrast, is 51% below.

MetricSummit CountyUtah averageDifference
Traffic4,99010,198-51.1%
Truck % (Total Traffic)15.9%8.9%+77.8%
Truck % (Highway)17.9%12.3%+45.3%
Avg. Travel Time29.8 min32.2 min-7.2%

How Summit County compares

Summit County moves more traffic than any nearby county

Set against the average of the 4 areas nearest to it, Summit County moves 3.1 times the total daily travel; 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.

Summit County and the 4 nearest county-level areas by centroid distance, with the Utah average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Summit County4,99015.9%2,770,83729.8 min4.1%
Uinta County, Wyoming3,32929.1%1,150,22430.4 min10.4%
Duchesne County, Utah2,8089.8%583,24335.7 minN/A
Wasatch County, Utah6,3068.1%1,240,08833.6 min9.1%
Morgan County, Utah3,84614.5%654,42232.8 minN/A
Utah average10,1988.9%N/A32.2 min21.2%

Summit County ranked within Utah

Summit County posts the highest average driver income of any county-level area in Utah.

Summit County ranked among 29 county-level areas in Utah (1 = highest); measures without data in every county rank a smaller field, down to 25.
MeasureSummit CountyUtah rank
Traffic volume (AADT)4,990#14 of 29
Highway vehicle-miles per day2,285,130#6 of 25
Truck share on highways17.9%#10 of 25
Highway trucks per day3,979#5 of 25
Average travel time29.8 min#26 of 29
Average driver income$131,800#1 of 29
Average driver age44.2 yrs#12 of 29

The two ends of this table sit far apart: #1 of 29 on average driver income, against #26 of 29 on average travel time.

Busiest roads in Summit County, Utah

Traffic concentrates on a few corridors: the three busiest roads average 41,670 vehicles a day, against 4,990 on the average road in Summit County.

UT 224 is the busiest road, at 47,516 vehicles a day, 3,194 of them trucks (6.7%). Dwight D. Eisenhower Highway carries the most trucks, 5,650 a day (21.4% of its traffic), although it ranks #5 for all traffic.

I 84 carries longer journeys than most roads here, with a median trip of 56.8 minutes against 29.8 county-wide.

Few trucks use Kearns Boulevard: 5.3% of its traffic, under half the county's 15.9%.

I 84 draws drivers from lower-income areas: their neighborhoods average $96,831 in household income, 27% below the county's $131,800.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1UT 224Trunk road · 47,516vehicles3,194trucks · 6.7%
Road class
Trunk road
Median trip time
28.0 min
Drivers’ median age
44.0 yrs
Drivers’ average income
$159,493

At 9.5 times the county average, UT 224 draws drivers from neighborhoods averaging $159,493 in household income.

2Park AvenueTrunk road · 45,249vehicles2,720trucks · 6.0%
Road class
Trunk road
Median trip time
25.0 min
Drivers’ median age
45.6 yrs
Drivers’ average income
$158,574

A main artery: Park Avenue's busiest stretch carries 9.1 times the county average; trucks are 6.0% of it, below the county-wide 15.9%.

3Kearns BoulevardTrunk road · 32,246vehicles1,721trucks · 5.3%
Road class
Trunk road
Median trip time
25.0 min
Drivers’ median age
45.9 yrs
Drivers’ average income
$155,549

Kearns Boulevard is a trunk route for the county, carrying 6.5 times the county average on its busiest stretch; trucks are 5.3% of it, below the county-wide 15.9%.

4US 40Motorway · 29,786vehicles2,956trucks · 9.9%
Road class
Motorway
Median trip time
44.3 min
Drivers’ median age
44.7 yrs
Drivers’ average income
$140,439

Drivers on US 40 are on long journeys, a median 44.3 minutes against 29.8 county-wide: a through route more than a local street.

5Dwight D. Eisenhower HighwayMotorway · 26,356vehicles5,650trucks · 21.4%
Road class
Motorway
Median trip time
46.6 min
Drivers’ median age
41.4 yrs
Drivers’ average income
$114,416

Dwight D. Eisenhower Highway carries through traffic: the median trip using it lasts 46.6 minutes, against 29.8 for the county.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Dwight D. Eisenhower HighwayMotorway · #5 by traffic26,356vehicles5,650trucks · 21.4%
2I 84Motorway · 16,437vehicles3,344trucks · 20.3%
Road class
Motorway
Median trip time
56.8 min
Drivers’ median age
40.8 yrs
Drivers’ average income
$96,831

I 84 carries 3.3 times the county average at its busiest, 3,344 of them trucks (20.3%, above the county-wide 15.9%).

3UT 224Trunk road · #1 by traffic47,516vehicles3,194trucks · 6.7%
4US 40Motorway · #4 by traffic29,786vehicles2,956trucks · 9.9%
5Park AvenueTrunk road · #2 by traffic45,249vehicles2,720trucks · 6.0%
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

SummitDepartment 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 Summit County

The same traffic breakdown for the areas closest to Summit County, Utah.

Need segment-level traffic data?

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