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Traffic heat map of Salt Lake County, Utah: 1,503 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Veterans Memorial Highway

Salt Lake County, Utah Traffic Counts

It moves more highway traffic than any other county in Utah. This page breaks down traffic in Salt Lake County, Utah across 1,503 miles of monitored roads split into 49,888 segments, using multi-sourced mobile and sensor data. It goes beyond raw counts to truck flow, congestion and who is driving, so site selection and route planning rest on evidence.
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 Salt Lake County, Utah

Traffic

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

vehicles per day12,656
Trucks

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

5.9%
Average travel time

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

32.1 min
Congestion ratio

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

25.7%
Drivers’ average age

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

39.1 yrs
Drivers’ average income

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

$104,848

A typical monitored road in Salt Lake County, Utah sees 12,656 vehicles per day, while its 1,503 miles of monitored roads together handle 25,179,994 vehicle-miles traveled per day (≈9.2 billion per year). Trucks are a smaller part of the mix than across Utah: 5.9% against 8.9%.

Busier roads than 93% of counties in Utah

Salt Lake sees 24% higher average daily traffic volume than the state average (12,656 vehicles per day against 10,198), suggesting more demand on each road - a factor worth weighing in site selection and logistics planning. In total volume terms, its road network carries about 29% of Utah's statewide total of vehicle-miles. Salt Lake carries more traffic than 93% of counties in Utah.

At 32.1 minutes, the average travel time matches the state level closely. Its average travel time of 32.1 minutes is shorter than 61% of counties in Utah.

The congestion ratio of 25.7% is 21% higher, pointing to more pronounced congestion than the state level - relevant for traffic control and delivery planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Salt Lake County, Utah

Trafficvehicles per day42,376
Trucks7.7%
Average travel time37.2 min
Congestion ratio54.0%
Drivers’ average age39.1 yrs
Drivers’ average income$104,618

Travel in Salt Lake County, Utah splits roughly evenly, with about half of it (49% of vehicle-miles) on highways. The average highway carries 42,376 vehicles per day, 256% more than the average non-highway road in the same area, which carries 11,891 vehicles per day.

With 20% of the road miles (303 miles in 1,252 segments), highways punch above their length, carrying 12,368,837 vehicle-miles traveled per day (≈4.5 billion per year).

By highway travel volume, Salt Lake ranks first in Utah.

Lower highway truck share than 96% of counties in Utah

At 7.7%, highway truck share is 37% lower than the state average. Trucks are a small share of a very large highway flow, so Salt Lake still moves heavy freight volumes alongside its passenger traffic.

Salt Lake's highway truck share (7.7%) is lower than 96% of counties in Utah. Salt Lake's highway truck count is higher than 92% of counties in Utah, at roughly 3,271 trucks per day.

non-highway traffic icon

Non-highway Traffic in Salt Lake County, Utah

Trafficvehicles per day11,891
Trucks4.1%
Average travel time32.0 min
Congestion ratio25.0%
Drivers’ average age39.1 yrs
Drivers’ average income$105,029

Travel in Salt Lake County, Utah splits roughly evenly, with about half of it (51% of vehicle-miles) on local roads. On the average non-highway road, that comes to 11,891 vehicles per day.

Spread over 1,201 miles and 48,636 segments, 80% of the road network, local roads carry a lighter load per mile: 12,811,157 vehicle-miles traveled per day (≈4.7 billion per year). Trucks make up 4.1% of non-highway traffic, about 1 in 24 vehicles.

Younger drivers than 93% of counties in Utah

The concentration of trucks on non-highway roads is 47% lower than on highways.

Non-highway congestion (25.0%) runs slightly higher than the state level (10% higher).

Trip origins here have higher average income than 86% of counties in Utah. Salt Lake's median driver age is lower than 93% of counties in Utah.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
A long morning plateau from 7:00 AM to 12:00 PM and PM peak 4:00 PM–6:00 PM, with volumes reaching approximately 77% higher than the daily average.
Weekend traffic:
Weekends are much quieter: volumes run about 22% below weekday levels, the signature of a commute-driven road network.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
Traffic is nearly flat through the year: even August–October, the busiest stretch, runs only +4% versus the annual average.
Lowest month:
November is the quietest month, with volumes -5% versus the annual average.

Data Finding: Hourly & Seasonal Patterns

In Salt Lake County, Utah, the peak hour concentrates about 7% of the day's traffic, and traffic stays steady through the year (+4% in high season).

Salt Lake County vs. Utah Traffic Comparison

The highway truck share sets Salt Lake County apart: 37% below the Utah average. Its truck share is also 34% below.

MetricSalt Lake CountyUtah averageDifference
Traffic12,65610,198+24.1%
Truck % (Total Traffic)5.9%8.9%-34.3%
Truck % (Highway)7.7%12.3%-37.4%
Avg. Travel Time32.1 min32.2 min-0.2%

How Salt Lake County compares

Salt Lake County moves more traffic than any nearby county

Against the 4 nearest areas, Salt Lake County moves 3.4 times the total daily travel; it has the third 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.

Salt Lake 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
Salt Lake County12,6565.9%25,179,99432.1 min25.7%
Davis County, Utah13,7206.8%9,257,93931.1 min26.5%
Morgan County, Utah3,84614.5%654,42232.8 minN/A
Utah County, Utah10,1046.0%13,897,59831.1 min18.7%
Weber County, Utah13,0726.4%6,015,20433.6 min30.3%
Utah average10,1988.9%N/A32.2 min21.2%

Salt Lake County ranked within Utah

Salt Lake County posts the highest highway travel volume of any county-level area in Utah.

Salt Lake County ranked among 29 county-level areas in Utah (1 = highest); measures without data in every county rank a smaller field, down to 25.
MeasureSalt Lake CountyUtah rank
Traffic volume (AADT)12,656#3 of 29
Highway vehicle-miles per day12,368,837#1 of 25
Truck share on highways7.7%#24 of 25
Highway trucks per day3,271#3 of 25
Average travel time32.1 min#18 of 29
Average driver income$104,848#5 of 29
Average driver age39.1 yrs#27 of 29

Salt Lake County ranks #1 of 25 on highway travel volume but #24 of 25 on truck share on highways. It carries some of the heaviest highway traffic in Utah, but very little of it is freight - this is commuter and local car volume, not through-trucking.

Busiest roads in Salt Lake County, Utah

On their busiest stretches, the three busiest roads in Salt Lake County carry 114,761 vehicles a day on average, 9.1 times the typical road in the county (12,656).

Veterans Memorial Highway is the busiest road, at 174,942 vehicles a day, 12,156 of them trucks (7.0%). That is 2.0 times the next road, UT 201 (89,653). It also carries the most trucks.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Veterans Memorial HighwayMotorway · 174,942vehicles12,156trucks · 7.0%
Road class
Motorway
Congestion ratio
80.9%
Median trip time
38.9 min
Drivers’ median age
39.0 yrs
Drivers’ average income
$102,895

Travel on Veterans Memorial Highway's busiest stretch runs 81% over free-flow time, against 26% across the county, so expect slower peak hours.

2UT 201Motorway · 89,653vehicles7,760trucks · 8.7%
Road class
Motorway
Congestion ratio
78.0%
Median trip time
33.2 min
Drivers’ median age
38.6 yrs
Drivers’ average income
$90,944

UT 201 is one of the more congested roads here: trips take 78% longer than at free-flow speed, against 26% county-wide.

3Belt RouteMotorway · 79,687vehicles5,770trucks · 7.2%
Road class
Motorway
Congestion ratio
53.1%
Median trip time
34.3 min
Drivers’ median age
39.5 yrs
Drivers’ average income
$101,108

Belt Route carries 6.3 times the county average on its busiest stretch, where the median trip lasts 34.3 minutes.

4Bangerter HighwayMotorway · 78,285vehicles4,373trucks · 5.6%
Road class
Motorway
Congestion ratio
67.7%
Median trip time
29.1 min
Drivers’ median age
39.5 yrs
Drivers’ average income
$108,455

At 6.2 times the county average, Bangerter Highway draws drivers from neighborhoods averaging $108,455 in household income.

5Dwight D. Eisenhower HighwayMotorway · 77,318vehicles7,595trucks · 9.8%
Road class
Motorway
Congestion ratio
56.1%
Median trip time
37.5 min
Drivers’ median age
39.8 yrs
Drivers’ average income
$120,272

A main artery: Dwight D. Eisenhower Highway's busiest stretch carries 6.1 times the county average; trucks are 9.8% of it, above the county-wide 5.9%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Veterans Memorial HighwayMotorway · #1 by traffic174,942vehicles12,156trucks · 7.0%
2UT 201Motorway · #2 by traffic89,653vehicles7,760trucks · 8.7%
3Dwight D. Eisenhower HighwayMotorway · #5 by traffic77,318vehicles7,595trucks · 9.8%
4Belt RouteMotorway · #3 by traffic79,687vehicles5,770trucks · 7.2%
5Bangerter HighwayMotorway · #4 by traffic78,285vehicles4,373trucks · 5.6%
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

Salt LakeDepartment 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 Salt Lake County

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

Need segment-level traffic data?

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