This page delivers traffic analytics for St. Mary Parish, Louisiana. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for St. Mary Parish, Louisiana among 303 road miles divided in 2,662 segments. Our metrics go beyond simple volume counts to provide actionable insights on traffic intensity, congestion, commercial vehicle flow, and network performance with highest possible granularity (average segment length is 601 ft). Whether you are evaluating a new retail location, planning logistics routes, or assessing infrastructure needs, this data helps you move from assumptions to certainty.
Data sourced from TrafficZoom's proprietary analytics platform.
The average number of vehicles that travel each day over any road in the road network.
3,305
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
12.9%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
29.3 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
11.4%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
47.7 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$64,782
Our data indicates an estimated average traffic volume of 3,305 vehicles per day in St. Mary Parish, Louisiana that results in 1,181,273 vehicle-miles traveled per day (≈431 million per year). The traffic stream is comprised of an average of 1 truck for every 8 vehicles. Typical time spent behind the wheel per trip is 29.3 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the Louisiana state averages: St. Mary's average daily traffic volume is 45% lower than the state average - 3,305 vehicles per day against 6,061 - suggesting less traffic load per road, a critical factor for logistics and site planning. Network-wide, St. Mary accounts for about 1.0% of Louisiana's statewide total, at 1,181,273 vehicle-miles traveled per day (≈431 million per year). The average trip takes 29.3 minutes, 8% lower than the state level. At 34% lower than the state level, the 11.4% congestion ratio signals smoother traffic flow - crucial for traffic control improvement and logistics planning. By volume, St. Mary's 3,305 vehicles per day outpaces 43% of counties in Louisiana. 6% of counties in Louisiana have a shorter average travel time than St. Mary's 29.3 minutes.
Highway vs. Non-Highway Traffic Analysis
Highway Traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
10,808
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
16.0%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
44.8 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
25.4%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
47.2 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$66,669
A significant volume of traffic in St. Mary Parish, Louisiana utilizes the highway network. The average highway carries 10,808 vehicles per day, 312% more than the average non-highway road in the same area, which carries 2,625 vehicles per day. That average covers 83 highway road miles divided in 221 segments (average segment length 1,982 ft), together carrying 791,943 vehicle-miles traveled per day (≈289 million per year). That is more highway travel volume than 57% of counties in Louisiana. Trucks constitute 16.0% of highway traffic.
Analytical insight
The concentration of trucks on highways (16.0%) is in line with the state average for similar road classifications. By truck concentration, highways here outrank 52% of counties in Louisiana. By raw truck volume, St. Mary carries more highway trucks than 43% of counties in Louisiana.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
2,625
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
6.6%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
27.9 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
10.2%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
48.8 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$62,608
The non-highway road network in St. Mary Parish, Louisiana supports a substantial volume of traffic. The average non-highway road carries 2,625 vehicles per day, 76% less than the average highway in the same area, which carries 10,808 vehicles per day. That average covers 220 non-highway road miles divided in 2,441 segments (average segment length 476 ft), together carrying 389,330 vehicle-miles traveled per day (≈142 million per year). Trucks constitute 6.6% of non-highway traffic.
Analytical insight
The concentration of trucks on non-highway roads is 59% lower than on highways. At 40% lower than the state level, the non-highway congestion ratio of 10.2% signals easier movement on local roads. 6% of counties in Louisiana see shorter overall travel times than St. Mary. St. Mary's average driver income exceeds 51% of counties in Louisiana. 84% of counties in Louisiana have a younger driver population than St. Mary.
Time-of-Day & Seasonal Patterns
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–8:00 AM and PM peak 3:00 PM–7:00 PM, with volumes reaching approximately 66% higher than the daily average.
Weekend traffic:
Weekend volumes run about 26% below weekday levels.
Seasonal Fluctuation
Busy season:
March–May is the high season, with volumes +2% versus the annual average.
Lowest month:
July is the quietest month, with volumes -4% versus the annual average.
Analytical insight
In St. Mary Parish, Louisiana, the peak hour concentrates about 7% of the day's traffic, and seasonal swing is mild at +2% in high season.
Traffic Flow Profile Comparison
Metric
St. Mary
Louisiana
Average
Difference
Traffic
3,305
6,061
-45.5%
Truck % (Total Traffic)
12.9%
11.2%
+15.5%
Truck % (Highway)
16.0%
16.1%
-0.1%
Avg. Travel Time
29.3 min
31.8 min
-8.0%
Frequently Asked Questions
The average daily traffic volume is calculated at 3,305 vehicles per day, providing a baseline for daily operations and site assessment.
The driver population in St. Mary skews older than 84% of counties in Louisiana.
Traffic volumes are typically 2% higher during March–May. Volumes drop to their lowest levels in July, averaging 3,184 vehicles per day - a 4% decrease from the annual average.
Approximately 17% of highway traffic and 5% of non-highway traffic consists of vehicles whose trip originates outside St. Mary Parish, Louisiana. This indicates that a portion of highway traffic is regional pass-through, while local roads are more representative of resident and commuter activity.
The average travel time for drivers is 29.3 minutes, offering a standard metric for commute and delivery route planning.
Trucks account for approximately 12.9% of the total traffic mix across all road types, with a significantly higher concentration of 16.0% on highways.
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)
