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Traffic heat map of La Salle County, Texas: 333 miles of roads shaded from blue (light) to red (heavy traffic)

La Salle County, Texas Traffic Counts

About 1 in 3 vehicles here is a truck, against 1 in 10 across Texas. This page breaks down traffic in La Salle County, Texas across 333 miles of monitored roads split into 1,374 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 La Salle County, Texas

Traffic

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

vehicles per day2,691
Trucks

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

32.1%
Average travel time

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

56.5 min
Congestion ratio

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

9.1%
Drivers’ average age

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

41.2 yrs
Drivers’ average income

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

$63,386

The average monitored road in La Salle County, Texas carries 2,691 vehicles per day. Across its 333 miles of monitored roads, that adds up to 1,304,408 vehicle-miles traveled per day (≈476 million per year). About 1 in 3 vehicles is a truck, well above the 9.8% across Texas - a freight-heavy mix.

Longer trips than 96% of counties in Texas

At 2,691 vehicles per day, the average monitored road in La Salle carries 61% less traffic than the state average of 6,895, suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. In total volume terms, its road network carries about 0.2% of Texas's statewide total of vehicle-miles. 57% of counties in Texas see more traffic than La Salle's 2,691 vehicles per day.

Journey times run 73% higher than the state level, at 56.5 minutes on average. Its average travel time of 56.5 minutes is longer than 96% of counties in Texas.

The congestion ratio of 9.1% is 44% lower, pointing to smoother traffic flow than the state level - travel times are easy to plan around for scheduled deliveries.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in La Salle County, Texas

Trafficvehicles per day9,108
Trucks37.8%
Average travel time75.9 min
Congestion ratio20.6%
Drivers’ average age40.7 yrs
Drivers’ average income$67,076

Most travel in La Salle County, Texas happens on highways, 71% of all vehicle-miles. The average highway carries 9,108 vehicles per day, 330% more than the average non-highway road in the same area, which carries 2,116 vehicles per day.

With 27% of the road miles (89 miles in 113 segments), highways punch above their length, carrying 928,396 vehicle-miles traveled per day (≈339 million per year).

By highway travel volume, La Salle outranks 66% of counties in Texas.

A major freight corridor

Highway truck concentration here runs 175% higher than the state average, at 37.8%. That marks La Salle as a major freight corridor, where highway access is what logistics operators compete on.

By truck concentration, highways here outrank 96% of counties in Texas. 96% of counties in Texas see fewer highway trucks per day than La Salle's roughly 3,447.

non-highway traffic icon

Non-highway Traffic in La Salle County, Texas

Trafficvehicles per day2,116
Trucks17.9%
Average travel time54.7 min
Congestion ratio8.1%
Drivers’ average age42.4 yrs
Drivers’ average income$54,828

Local roads carry a smaller share of travel in La Salle County, Texas, 29% of vehicle-miles; most driving happens on highways. The average non-highway road carries 2,116 vehicles per day.

Spread over 245 miles and 1,261 segments, 73% of the road network, local roads carry a lighter load per mile: 376,012 vehicle-miles traveled per day (≈137 million per year). About 1 in 6 vehicles on non-highway roads is a truck (17.9%).

Younger drivers than 87% of counties in Texas

Non-highway roads carry a truck concentration that's 53% lower than the highway network.

At 49% lower than the state level, the non-highway congestion ratio of 8.1% signals easier movement on local roads.

73% of counties in Texas see higher average driver income among trip origins than La Salle. La Salle's median driver age is lower than 87% of counties in Texas.

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 3:00 PM to 7:00 PM, with volumes reaching approximately 44% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 12% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
Traffic is nearly flat through the year: even October–December, the busiest stretch, runs only +2% versus the annual average.
Lowest month:
September is the quietest month, with volumes -4% versus the annual average.

Data Finding: Hourly & Seasonal Patterns

In La Salle County, Texas, traffic is spread evenly through the day, with the busiest hour carrying only about 6%, and traffic stays steady through the year (+2% in high season).

La Salle County vs. Texas Traffic Comparison

Of the four measures, truck share differs most: La Salle County runs 228% above the Texas average. Its highway truck share is also 175% above.

MetricLa Salle CountyTexas averageDifference
Traffic2,6916,895-61.0%
Truck % (Total Traffic)32.1%9.8%+228.4%
Truck % (Highway)37.8%13.8%+175.2%
Avg. Travel Time56.5 min32.6 min+73.1%

How La Salle County compares

La Salle County has a higher truck share than any nearby county

Against the 4 nearest areas, La Salle County runs 14.5 percentage points more truck traffic and sees 49.3% longer typical trips; it has the third busiest roads of the five. Freight passes through here that never reaches the areas around it: the truck share is high precisely because the local car traffic is not.

La Salle County and the 4 nearest county-level areas by centroid distance, with the Texas average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
La Salle County2,69132.1%1,304,40856.5 min9.1%
Frio County, Texas2,44626.0%1,339,86636.9 min7.9%
McMullen County, Texas1,57417.0%208,52548.0 min5.5%
Dimmit County, Texas3,04616.4%601,01136.7 min7.9%
Webb County, Texas9,15811.0%4,856,74529.7 min26.1%
Texas average6,8959.8%N/A32.6 min16.4%

La Salle County ranked within Texas

La Salle County sits in the top quarter of the Texas field on truck share on highways, at #9 of 227.

La Salle County ranked among 254 county-level areas in Texas (1 = highest); measures without data in every county rank a smaller field, down to 227.
MeasureLa Salle CountyTexas rank
Traffic volume (AADT)2,691#144 of 254
Highway vehicle-miles per day928,396#77 of 227
Truck share on highways37.8%#9 of 227
Highway trucks per day3,447#11 of 227
Average travel time56.5 min#11 of 254
Average driver income$63,386#186 of 254
Average driver age41.2 yrs#221 of 254

The two ends of this table sit far apart: #9 of 227 on truck share on highways, against #221 of 254 on average driver age.

Busiest roads in La Salle County, Texas

The top three roads on this list in La Salle County average 12,094 vehicles a day, 4.5 times the county average of 2,691 across all its monitored roads.

Purple Heart Trail tops the list with 20,956 vehicles a day, 7,930 of them trucks (37.8%). That is 2.7 times the next road, I 35 (7,861). It also carries the most trucks on the list.

Trips using IH 35 Frontage Road are long: a median of 89.9 minutes against 56.5 county-wide, the mark of a through route.

Few trucks use Main Street: 5.8% of its traffic, under half the county's 32.1%.

Drivers on TX 72 are noticeably older, with a median age of 50.7 against 41.2 across the county.

Ranked by daily traffic (AADT)

Only named roads are listed. Some unnamed segments, such as ramps or unlabeled carriageways, may carry as much traffic as the roads shown.

Cars and light vehiclesTrucks
1Purple Heart TrailMotorway · 20,956vehicles7,930trucks · 37.8%
Road class
Motorway
Congestion ratio
20.6%
Median trip time
75.9 min
Drivers’ median age
40.7 yrs
Drivers’ average income
$67,076

Travel on Purple Heart Trail's busiest stretch runs 21% over free-flow time, against 9% across the county, so expect slower peak hours.

2I 35Primary road · 7,861vehicles1,286trucks · 16.4%
Road class
Primary road
Median trip time
64.3 min
Drivers’ median age
42.4 yrs
Drivers’ average income
$52,002

The busiest stretch of I 35 carries 2.9 times the county average; trucks are 16.4% of it, below the county-wide 32.1%.

3Main StreetPrimary road · 7,466vehicles431trucks · 5.8%
Road class
Primary road
Congestion ratio
20.1%
Median trip time
31.6 min
Drivers’ median age
44.5 yrs
Drivers’ average income
$51,227

Main Street is one of the more congested roads here: trips take 20% longer than at free-flow speed, against 9% county-wide.

4FM 468Secondary road · 5,460vehicles294trucks · 5.4%
Road class
Secondary road
Congestion ratio
13.3%
Median trip time
31.2 min
Drivers’ median age
43.0 yrs
Drivers’ average income
$48,080

FM 468 is a local road at heart: the median trip using it lasts 31.2 minutes, against 56.5 for the county.

5TX 97Primary road · 3,697vehicles360trucks · 9.8%
Road class
Primary road
Congestion ratio
10.4%
Median trip time
33.2 min
Drivers’ median age
42.9 yrs
Drivers’ average income
$51,116

TX 97 carries 37% more than the county average on its busiest stretch, where the median trip lasts 33.2 minutes.

Ranked by trucks per day

Only named roads are listed. Some unnamed segments, such as ramps or unlabeled carriageways, may carry as much traffic as the roads shown.

Cars and light vehiclesTrucks
1Purple Heart TrailMotorway · #1 by traffic20,956vehicles7,930trucks · 37.8%
2I 35Primary road · #2 by traffic7,861vehicles1,286trucks · 16.4%
3TX 72Primary road · 2,526vehicles639trucks · 25.3%
Road class
Primary road
Congestion ratio
5.7%
Median trip time
58.8 min
Drivers’ median age
50.7 yrs
Drivers’ average income
$52,711

TX 72 is a quieter road: its busiest stretch carries 6% less than the county average; trucks are 25.3% of it, below the county-wide 32.1%.

4IH 35 Frontage RoadSecondary road · 2,188vehicles568trucks · 26.0%
Road class
Secondary road
Median trip time
89.9 min
Drivers’ median age
42.4 yrs
Drivers’ average income
$47,390

Even at its busiest, IH 35 Frontage Road carries 19% less than the county average; trucks are 26.0% of it, below the county-wide 32.1%.

5Main StreetPrimary road · #3 by traffic7,466vehicles431trucks · 5.8%
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

La SalleDepartment 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 La Salle County

The same traffic breakdown for the areas closest to La Salle County, Texas.

Need segment-level traffic data?

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