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Traffic heat map of St. Charles Parish, Louisiana: 202 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 10 and I 310

St. Charles Parish, Louisiana Traffic Counts

Our St. Charles Parish, Louisiana traffic data covers 3,061 road segments over 202 road miles, with an average segment of just 348 ft. Its drivers come from neighborhoods among the top 3 counties in Louisiana for household income. 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. Charles Parish, Louisiana

Traffic

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

vehicles per day7,010
Trucks

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

13.1%
Average travel time

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

33.9 min
Congestion ratio

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

19.5%
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.

$85,377

A typical monitored road in St. Charles Parish, Louisiana sees 7,010 vehicles per day, while its 202 miles of monitored roads together handle 2,317,802 vehicle-miles traveled per day (≈846 million per year). Trucks are 13.1% of traffic, more than the 11.2% across Louisiana.

Busier roads than 81% of counties in Louisiana

At 7,010 vehicles per day, the average monitored road in St. Charles carries 16% more traffic than the state average of 6,061, suggesting more demand on each road - a critical factor for logistics and site planning. Network-wide, St. Charles accounts for about 1.9% of Louisiana's statewide total of vehicle-miles. By volume, St. Charles's 7,010 vehicles per day outpaces 81% of counties in Louisiana.

Journey times run 7% higher than the state level, at 33.9 minutes on average. On travel time, St. Charles runs longer than 71% of counties in Louisiana.

The congestion ratio of 19.5% runs slightly higher than the state level (13% higher) - relevant for traffic control and delivery planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in St. Charles Parish, Louisiana

Trafficvehicles per day15,373
Trucks14.2%
Average travel time42.3 min
Congestion ratio36.7%
Drivers’ average age46.1 yrs
Drivers’ average income$84,440

The vast majority of driving in St. Charles Parish, Louisiana happens on highways: 80% of all vehicle-miles. The average highway carries 15,373 vehicles per day, 204% more than the average non-highway road in the same area, which carries 5,064 vehicles per day.

Highways make up 49% of the monitored road miles (98 miles, 578 segments), so they carry more than their share: 1,854,968 vehicle-miles traveled per day (≈677 million per year).

82% of counties in Louisiana move less traffic on their highways.

More highway trucks than 70% of counties in Louisiana

At 14.2%, highway truck share is 12% lower than the state average. The highway traffic mix is typical for Louisiana: neither freight- nor commuter-dominated.

St. Charles's highway truck share (14.2%) is lower than 57% of counties in Louisiana. 70% of counties in Louisiana see fewer highway trucks per day than St. Charles's roughly 2,183.

non-highway traffic icon

Non-highway Traffic in St. Charles Parish, Louisiana

Trafficvehicles per day5,064
Trucks8.9%
Average travel time32.0 min
Congestion ratio15.5%
Drivers’ average age46.5 yrs
Drivers’ average income$88,679

At 20% of vehicle-miles, local roads carry a smaller share of the traffic in St. Charles Parish, Louisiana than highways. A typical local road sees 5,064 vehicles per day.

Local roads make up 51% of the monitored road miles (104 miles in 2,483 segments) but carry less than their share of travel: 462,834 vehicle-miles traveled per day (≈169 million per year). The truck share on non-highway roads is 8.9%.

Drivers from higher-income areas than 97% of counties in Louisiana

Non-highway roads carry a truck concentration that's 37% lower than the highway network.

Non-highway congestion (15.5%) runs slightly lower than the state level (8% lower).

97% of counties in Louisiana see lower average driver income among trip origins than St. Charles. The driver population here skews older than 63% of counties in Louisiana.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

St. Charles Parish vs. Louisiana Traffic Comparison

St. Charles Parish's biggest difference from the Louisiana average is its truck share, 17% above it. Its average daily traffic per road is also 16% above.

MetricSt. Charles ParishLouisiana averageDifference
Traffic7,0106,061+15.7%
Truck % (Total Traffic)13.1%11.2%+17.4%
Truck % (Highway)14.2%16.1%-11.5%
Avg. Travel Time33.9 min31.8 min+6.7%

How St. Charles Parish compares

St. Charles Parish against nearby parishes

Nothing in this table sets St. Charles Parish sharply apart from the 4 areas nearest to it, though it has the fourth busiest roads of the five. The same kind of road, just less of it: traffic per road matches the areas around it while the network itself is smaller.

St. Charles 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. Charles Parish7,01013.1%2,317,80233.9 min19.5%
St. John the Baptist Parish, Louisiana8,41317.4%1,742,09833.6 min16.4%
St. James Parish, Louisiana4,06814.0%955,97534.6 min11.0%
Orleans Parish, Louisiana7,0228.6%6,925,13834.0 min22.8%
Jefferson Parish, Louisiana10,3946.3%7,728,86732.5 min29.7%
Louisiana average6,06111.2%N/A31.8 min17.3%

St. Charles Parish ranked within Louisiana

St. Charles Parish sits in Louisiana's top three on average driver income.

St. Charles 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. Charles ParishLouisiana rank
Traffic volume (AADT)7,010#13 of 64
Highway vehicle-miles per day1,854,968#11 of 57
Truck share on highways14.2%#33 of 57
Highway trucks per day2,183#18 of 57
Average travel time33.9 min#19 of 64
Average driver income$85,377#3 of 64
Average driver age46.2 yrs#24 of 64

Busiest roads in St. Charles Parish, Louisiana

Traffic concentrates on a few corridors: the three busiest roads average 51,881 vehicles a day, against 7,010 on the average road in St. Charles Parish.

I 10 is the busiest road, at 65,142 vehicles a day, 10,690 of them trucks (16.4%). It also carries the most trucks.

Trips using Hale Boggs Bridge are long: a median of 47.8 minutes against 33.9 county-wide, the mark of a through route.

Trucks make up 20.9% of traffic on Hale Boggs Bridge, against 13.1% across all roads in the county.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 10Motorway · 65,142vehicles10,690trucks · 16.4%
Road class
Motorway
Congestion ratio
68.6%
Median trip time
46.8 min
Drivers’ median age
44.6 yrs
Drivers’ average income
$80,499

Travel on I 10's busiest stretch runs 69% over free-flow time, against 19% across the county, so expect slower peak hours.

2I 310Motorway · 48,889vehicles7,713trucks · 15.8%
Road class
Motorway
Congestion ratio
53.2%
Median trip time
45.2 min
Drivers’ median age
46.5 yrs
Drivers’ average income
$82,808

I 310 is one of the more congested roads here: trips take 53% longer than at free-flow speed, against 19% county-wide.

3Hale Boggs BridgeMotorway · 41,612vehicles8,680trucks · 20.9%
Road class
Motorway
Congestion ratio
45.5%
Median trip time
47.8 min
Drivers’ median age
46.5 yrs
Drivers’ average income
$84,311

Hale Boggs Bridge is a trunk route for the county, carrying 5.9 times the county average on its busiest stretch; trucks are 20.9% of it, above the county-wide 13.1%.

4US 90Trunk road · 40,392vehicles4,528trucks · 11.2%
Road class
Trunk road
Congestion ratio
50.2%
Median trip time
45.8 min
Drivers’ median age
46.4 yrs
Drivers’ average income
$90,486

Drivers on US 90 are on long journeys, a median 45.8 minutes against 33.9 county-wide: a through route more than a local street.

5Airline HighwayTrunk road · 20,071vehicles2,346trucks · 11.7%
Road class
Trunk road
Congestion ratio
29.8%
Median trip time
38.5 min
Drivers’ median age
47.0 yrs
Drivers’ average income
$84,006

Airline Highway carries 2.9 times the county average at its busiest, 2,346 of them trucks (11.7%, below the county-wide 13.1%).

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 10Motorway · #1 by traffic65,142vehicles10,690trucks · 16.4%
2Hale Boggs BridgeMotorway · #3 by traffic41,612vehicles8,680trucks · 20.9%
3I 310Motorway · #2 by traffic48,889vehicles7,713trucks · 15.8%
4US 90Trunk road · #4 by traffic40,392vehicles4,528trucks · 11.2%
5Airline HighwayTrunk road · #5 by traffic20,071vehicles2,346trucks · 11.7%
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. CharlesDepartment 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. Charles Parish

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

Need segment-level traffic data?

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