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Traffic heat map of St. Landry Parish, Louisiana: 618 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 49 and Laurel Avenue

St. Landry Parish, Louisiana Traffic Counts

Our St. Landry Parish, Louisiana traffic data covers 5,244 road segments over 618 road miles, with an average segment of just 622 ft. Its busiest road, I 49, carries 36,461 vehicles a day, 9.5 times the average road. Whether you are evaluating a new retail location, planning routes or assessing infrastructure, these numbers replace guesswork.
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 St. Landry Parish, Louisiana

Traffic

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

vehicles per day3,847
Trucks

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

12.9%
Average travel time

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

32.7 min
Congestion ratio

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

10.5%
Drivers’ average age

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

46.2 yrs
Drivers’ average income

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

$61,487

Our data shows 3,847 vehicles per day on the average road in St. Landry Parish, Louisiana, and 2,411,635 vehicle-miles traveled per day (≈880 million per year) across its 618 miles of monitored roads. Trucks are 12.9% of traffic, more than the 11.2% across Louisiana.

Congestion 39% below the Louisiana average

St. Landry's average daily traffic volume is 37% lower than the state average - 3,847 vehicles per day against 6,061 - suggesting less traffic load per road - lighter roads for freight, but less passing trade for roadside retail. Across the whole network, that travel is about 2.0% of Louisiana's statewide total. St. Landry carries more traffic than 59% of counties in Louisiana.

At 32.7 minutes, the average travel time matches the state level closely. Its average travel time of 32.7 minutes is shorter than 51% of counties in Louisiana.

The congestion ratio of 10.5% is 39% 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 St. Landry Parish, Louisiana

Trafficvehicles per day9,706
Trucks16.6%
Average travel time40.9 min
Congestion ratio20.5%
Drivers’ average age46.0 yrs
Drivers’ average income$62,121

Highways carry more than half of all travel in St. Landry Parish, Louisiana (61% of vehicle-miles). The average highway carries 9,706 vehicles per day, 237% more than the average non-highway road in the same area, which carries 2,880 vehicles per day.

With 24% of the road miles (151 miles in 743 segments), highways punch above their length, carrying 1,467,398 vehicle-miles traveled per day (≈536 million per year).

75% of counties in Louisiana move less traffic on their highways.

A typical mix of freight and passenger traffic

At 16.6%, the highway truck share matches the state average for similar road classifications. The highway traffic mix is typical for Louisiana: neither freight- nor commuter-dominated.

St. Landry's highway truck share (16.6%) is higher than 54% of counties in Louisiana. By raw truck volume, St. Landry carries fewer highway trucks than 54% of counties in Louisiana.

non-highway traffic icon

Non-highway Traffic in St. Landry Parish, Louisiana

Trafficvehicles per day2,880
Trucks7.1%
Average travel time31.3 min
Congestion ratio8.9%
Drivers’ average age46.7 yrs
Drivers’ average income$60,797

Local roads carry a significant share of travel in St. Landry Parish, Louisiana: 39% of all vehicle-miles. On the average non-highway road, that comes to 2,880 vehicles per day.

Spread over 467 miles and 4,501 segments, 76% of the road network, local roads carry a lighter load per mile: 944,237 vehicle-miles traveled per day (≈345 million per year). About 1 in 14 vehicles on non-highway roads is a truck (7.1%).

Local congestion 48% below the Louisiana average

Compared to highways, non-highway routes see 57% fewer trucks by share.

Non-highway congestion (8.9%) runs 48% lower than the state average, pointing to smoother local traffic flow.

Trip origins here have lower average income than 59% of counties in Louisiana. The driver population here skews older than 62% of counties in Louisiana.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In St. Landry Parish, Louisiana, the peak hour concentrates about 7% of the day's traffic.

St. Landry Parish vs. Louisiana Traffic Comparison

St. Landry Parish's biggest difference from the Louisiana average is its average daily traffic per road, 37% below it. Its truck share, by contrast, is 15% above.

MetricSt. Landry ParishLouisiana averageDifference
Traffic3,8476,061-36.5%
Truck % (Total Traffic)12.9%11.2%+15.3%
Truck % (Highway)16.6%16.1%+3.6%
Avg. Travel Time32.7 min31.8 min+2.7%

How St. Landry Parish compares

St. Landry Parish against nearby parishes

Against the 4 nearest areas, St. Landry Parish is 28.4% less congested and carries 31.1% less traffic on a typical road; it has the third busiest roads of the five. Less traffic and more room for it - the roads here run both quieter and freer than the areas around them.

St. Landry Parish and the 4 nearest county-level areas by centroid distance, with the Louisiana average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
St. Landry Parish3,84712.9%2,411,63532.7 min10.5%
Pointe Coupee Parish, Louisiana3,72712.0%1,065,10132.1 min9.9%
Evangeline Parish, Louisiana2,45012.2%789,75133.3 min7.5%
St. Martin Parish, Louisiana4,84614.3%2,053,57130.6 min12.7%
Lafayette Parish, Louisiana11,3079.3%5,966,00733.5 min28.6%
Louisiana average6,06111.2%N/A31.8 min17.3%

St. Landry Parish ranked within Louisiana

St. Landry Parish sits in the top quarter of the Louisiana field on highway travel volume, at #15 of 57.

St. Landry Parish ranked among 64 county-level areas in Louisiana (1 = highest); measures without data in every county rank a smaller field, down to 57.
MeasureSt. Landry ParishLouisiana rank
Traffic volume (AADT)3,847#27 of 64
Highway vehicle-miles per day1,467,398#15 of 57
Truck share on highways16.6%#27 of 57
Highway trucks per day1,613#31 of 57
Average travel time32.7 min#33 of 64
Average driver income$61,487#38 of 64
Average driver age46.2 yrs#25 of 64

Busiest roads in St. Landry Parish, Louisiana

The three busiest roads in St. Landry Parish average 24,820 vehicles a day, 6.5 times the county average of 3,847 across all its monitored roads.

I 49 leads with 36,461 vehicles a day, 6,164 of them trucks (16.9%). No other road comes close: Laurel Avenue, in second place, carries 19,973. It tops the truck ranking too, with the most trucks.

Few trucks use Laurel Avenue: 5.0% of its traffic, under half the county's 12.9%.

I 49 carries longer journeys than most roads here, with a median trip of 43.8 minutes against 32.7 county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 49Motorway · 36,461vehicles6,164trucks · 16.9%
Road class
Motorway
Congestion ratio
37.4%
Median trip time
43.8 min
Drivers’ median age
46.2 yrs
Drivers’ average income
$65,775

Travel on I 49's busiest stretch runs 37% over free-flow time, against 11% across the county, so expect slower peak hours.

2Laurel AvenueTrunk road · 19,973vehicles1,005trucks · 5.0%
Road class
Trunk road
Congestion ratio
25.4%
Median trip time
33.2 min
Drivers’ median age
45.0 yrs
Drivers’ average income
$58,114

Laurel Avenue is one of the more congested roads here: trips take 25% longer than at free-flow speed, against 11% county-wide.

3Frisco StreetTrunk road · 18,025vehicles2,237trucks · 12.4%
Road class
Trunk road
Congestion ratio
24.8%
Median trip time
42.5 min
Drivers’ median age
46.1 yrs
Drivers’ average income
$59,657

Drivers on Frisco Street are on long journeys, a median 42.5 minutes against 32.7 county-wide: a through route more than a local street.

4US 190Trunk road · 15,600vehicles1,871trucks · 12.0%
Road class
Trunk road
Congestion ratio
22.0%
Median trip time
42.1 min
Drivers’ median age
47.3 yrs
Drivers’ average income
$57,533

US 190 carries 4.1 times the county average on its busiest stretch, where the median trip lasts 42.1 minutes.

5Landry StreetTrunk road · 14,579vehicles1,096trucks · 7.5%
Road class
Trunk road
Congestion ratio
21.2%
Median trip time
33.5 min
Drivers’ median age
46.6 yrs
Drivers’ average income
$58,619

At 3.8 times the county average, Landry Street draws drivers from neighborhoods averaging $58,619 in household income.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 49Motorway · #1 by traffic36,461vehicles6,164trucks · 16.9%
2Frisco StreetTrunk road · #3 by traffic18,025vehicles2,237trucks · 12.4%
3US 190Trunk road · #4 by traffic15,600vehicles1,871trucks · 12.0%
4Landry StreetTrunk road · #5 by traffic14,579vehicles1,096trucks · 7.5%
5Laurel AvenueTrunk road · #2 by traffic19,973vehicles1,005trucks · 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

St. LandryDepartment 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 St. Landry Parish

The same traffic breakdown for the areas closest to St. Landry Parish, Louisiana.

Need segment-level traffic data?

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