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Traffic heat map of Lafayette Parish, Louisiana: 592 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 10 and US 90

Lafayette Parish, Louisiana Traffic Counts

Our Lafayette Parish, Louisiana traffic data covers 9,783 road segments over 592 road miles, with an average segment of just 320 ft. It has the busiest roads of any county in Louisiana, averaging 11,307 vehicles a day. 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 Lafayette Parish, Louisiana

Traffic

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

vehicles per day11,307
Trucks

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

9.3%
Average travel time

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

33.5 min
Congestion ratio

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

28.6%
Drivers’ average age

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

43.7 yrs
Drivers’ average income

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

$85,255

Our data shows 11,307 vehicles per day on the average road in Lafayette Parish, Louisiana, and 5,966,007 vehicle-miles traveled per day (≈2.2 billion per year) across its 592 miles of monitored roads. Trucks are a smaller part of the mix than across Louisiana: 9.3% against 11.2%.

The busiest roads of any county in Louisiana

Lafayette's average daily traffic volume is 87% higher than the state average - 11,307 vehicles per day against 6,061 - suggesting more traffic load per road - prime passing trade for storefronts, with more competition for road space. Network-wide, Lafayette accounts for about 4.9% of Louisiana's statewide total of vehicle-miles. Lafayette stands out as having the highest traffic volume in Louisiana - 11,307 vehicles per day.

Journey times run 5% higher than the state level, at 33.5 minutes on average. On travel time, Lafayette runs longer than 62% of counties in Louisiana.

At 66% higher than the state level, the 28.6% congestion ratio signals more pronounced congestion - expect markedly slower peak-hour deliveries and unreliable arrival times.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Lafayette Parish, Louisiana

Trafficvehicles per day24,554
Trucks18.3%
Average travel time40.0 min
Congestion ratio51.6%
Drivers’ average age44.2 yrs
Drivers’ average income$75,705

Highways carry a significant share of travel in Lafayette Parish, Louisiana: 36% of all vehicle-miles. The average highway carries 24,554 vehicles per day, 127% more than the average non-highway road in the same area, which carries 10,820 vehicles per day.

Highways make up 14% of the monitored road miles (82 miles, 347 segments), so they carry more than their share: 2,125,152 vehicle-miles traveled per day (≈776 million per year).

By highway travel volume, Lafayette outranks 86% of counties in Louisiana.

More highway trucks than 98% of counties in Louisiana

Highway truck concentration here runs 14% higher than the state average, at 18.3%. The highway traffic mix is typical for Louisiana: neither freight- nor commuter-dominated.

By truck concentration, highways here outrank 66% of counties in Louisiana. 98% of counties in Louisiana see fewer highway trucks per day than Lafayette's roughly 4,503.

non-highway traffic icon

Non-highway Traffic in Lafayette Parish, Louisiana

Trafficvehicles per day10,820
Trucks4.3%
Average travel time33.3 min
Congestion ratio27.8%
Drivers’ average age43.5 yrs
Drivers’ average income$88,405

A little more than half of the driving in Lafayette Parish, Louisiana happens on local roads: 64% of all vehicle-miles. A typical local road sees 10,820 vehicles per day.

Local roads make up 86% of the monitored road miles (510 miles in 9,436 segments) but carry less than their share of travel: 3,840,855 vehicle-miles traveled per day (≈1.4 billion per year). The truck share on non-highway roads is 4.3%.

Drivers from higher-income areas than 95% of counties in Louisiana

The concentration of trucks on non-highway roads is 77% lower than on highways.

At 65% higher than the state level, the non-highway congestion ratio of 27.8% signals more friction on local roads.

95% of counties in Louisiana see lower average driver income among trip origins than Lafayette. 84% of counties in Louisiana have an older driver population than Lafayette.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–8:00 AM and a long afternoon plateau from 3:00 PM to 7:00 PM, with volumes reaching approximately 63% 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:
Traffic is nearly flat through the year: even May–July, the busiest stretch, runs only +3% versus the annual average.
Lowest month:
January is the quietest month, with volumes -9% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Lafayette Parish, Louisiana, the peak hour concentrates about 7% of the day's traffic, and traffic stays steady through the year (+3% in high season).

Lafayette Parish vs. Louisiana Traffic Comparison

Of the four measures, average daily traffic per road differs most: Lafayette Parish runs 87% above the Louisiana average. Its truck share, by contrast, is 17% below.

MetricLafayette ParishLouisiana averageDifference
Traffic11,3076,061+86.6%
Truck % (Total Traffic)9.3%11.2%-17.2%
Truck % (Highway)18.3%16.1%+14.3%
Avg. Travel Time33.5 min31.8 min+5.4%

How Lafayette Parish compares

Lafayette Parish moves more traffic than any nearby parish

Compared with its 4 closest neighbours, Lafayette Parish is 166.5% more congested and carries 199.5% more traffic on a typical road; it has the busiest roads of the five. It is where traffic concentrates in this corner of the map - the local bottleneck, with more vehicles per road AND less room to absorb them.

Lafayette 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
Lafayette Parish11,3079.3%5,966,00733.5 min28.6%
Acadia Parish, Louisiana2,94916.4%1,940,55833.7 min9.2%
St. Martin Parish, Louisiana4,84614.3%2,053,57130.6 min12.7%
Vermilion Parish, Louisiana3,4596.8%955,36231.4 min10.5%
St. Landry Parish, Louisiana3,84712.9%2,411,63532.7 min10.5%
Louisiana average6,06111.2%N/A31.8 min17.3%

Lafayette Parish ranked within Louisiana

On average daily traffic volume, Lafayette Parish tops the Louisiana field outright.

Lafayette Parish ranked among 64 county-level areas in Louisiana (1 = highest); measures without data in every county rank a smaller field, down to 57.
MeasureLafayette ParishLouisiana rank
Traffic volume (AADT)11,307#1 of 64
Highway vehicle-miles per day2,125,152#9 of 57
Truck share on highways18.3%#20 of 57
Highway trucks per day4,503#2 of 57
Average travel time33.5 min#25 of 64
Average driver income$85,255#4 of 64
Average driver age43.7 yrs#54 of 64

Lafayette Parish ranks #1 of 64 on average daily traffic volume but #54 of 64 on average driver age - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Lafayette Parish, Louisiana

On their busiest stretches, the three busiest roads in Lafayette Parish carry 54,678 vehicles a day on average, 4.8 times the typical road in the county (11,307).

I 10 leads with 63,905 vehicles a day, 13,165 of them trucks (20.6%). It also carries the most trucks.

Trucks make up 20.6% of traffic on I 10 and 14.9% on Southwest Evangeline Thruway, against 9.3% across all roads in the county.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 10Motorway · 63,905vehicles13,165trucks · 20.6%
Road class
Motorway
Congestion ratio
73.3%
Median trip time
41.3 min
Drivers’ median age
44.2 yrs
Drivers’ average income
$73,925

Travel on I 10's busiest stretch runs 73% over free-flow time, against 29% across the county, so expect slower peak hours.

2US 90Trunk road · 50,793vehicles7,148trucks · 14.1%
Road class
Trunk road
Congestion ratio
47.0%
Median trip time
40.3 min
Drivers’ median age
44.4 yrs
Drivers’ average income
$77,717

The busiest stretch of US 90 carries 4.5 times the county average; trucks are 14.1% of it, above the county-wide 9.3%.

3I 49Motorway · 49,335vehicles6,878trucks · 13.9%
Road class
Motorway
Congestion ratio
50.2%
Median trip time
36.0 min
Drivers’ median age
44.9 yrs
Drivers’ average income
$73,460

On its busiest stretch, I 49 carries 4.4 times the county average; trucks are 13.9% of it, above the county-wide 9.3%.

4Ambassador Caffery ParkwayPrimary road · 38,242vehicles3,179trucks · 8.3%
Road class
Primary road
Congestion ratio
101.5%
Median trip time
34.0 min
Drivers’ median age
44.5 yrs
Drivers’ average income
$75,729

Ambassador Caffery Parkway is one of the more congested roads here: trips take 102% longer than at free-flow speed, against 29% county-wide.

5Southwest Evangeline ThruwayTrunk road · 37,326vehicles5,549trucks · 14.9%
Road class
Trunk road
Congestion ratio
53.5%
Median trip time
43.0 min
Drivers’ median age
44.1 yrs
Drivers’ average income
$83,526

Southwest Evangeline Thruway peaks at 37,326 vehicles a day, 3.3 times the county average; trucks are 14.9% of it, above the county-wide 9.3%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 10Motorway · #1 by traffic63,905vehicles13,165trucks · 20.6%
2US 90Trunk road · #2 by traffic50,793vehicles7,148trucks · 14.1%
3I 49Motorway · #3 by traffic49,335vehicles6,878trucks · 13.9%
4Southwest Evangeline ThruwayTrunk road · #5 by traffic37,326vehicles5,549trucks · 14.9%
5Northeast Evangeline ThruwayTrunk road · 29,474vehicles3,625trucks · 12.3%
Road class
Trunk road
Congestion ratio
50.9%
Median trip time
39.2 min
Drivers’ median age
44.3 yrs
Drivers’ average income
$77,466

Northeast Evangeline Thruway carries 2.6 times the county average at its busiest, 3,625 of them trucks (12.3%, above the county-wide 9.3%).

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

LafayetteDepartment 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 Lafayette Parish

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

Need segment-level traffic data?

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