This page delivers traffic analytics for St. Clair County, Alabama. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for St. Clair County, Alabama among 461 road miles divided in 6,295 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 387 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.
4,995
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
14.9%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
29.5 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.
13.3%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
47.4 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$79,371
Our data indicates an estimated average traffic volume of 4,995 vehicles per day in St. Clair County, Alabama that results in 2,968,588 vehicle-miles traveled per day (≈1.1 billion per year). The traffic stream is comprised of an average of 1 truck for every 7 vehicles. Typical time spent behind the wheel per trip is 29.5 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the Alabama state averages: St. Clair's average daily traffic volume is 16% lower than the state average - 4,995 vehicles per day against 5,932 - suggesting less traffic load per road, a critical factor for logistics and site planning. In total volume terms, its road network carries 2,968,588 vehicle-miles traveled per day (≈1.1 billion per year), about 2.1% of Alabama's statewide total. The average trip takes 29.5 minutes, 7% lower than the state level. At 14% lower than the state level, the 13.3% congestion ratio signals smoother traffic flow - crucial for traffic control improvement and logistics planning. 67% of counties in Alabama see less traffic than St. Clair's 4,995 vehicles per day. 3% of counties in Alabama have a shorter average travel time than St. Clair's 29.5 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.
18,227
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
20.6%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
48.0 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.
23.8%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
46.2 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$78,539
A significant volume of traffic in St. Clair County, Alabama utilizes the highway network. The average highway carries 18,227 vehicles per day, 283% more than the average non-highway road in the same area, which carries 4,753 vehicles per day. That average covers 103 highway road miles divided in 113 segments (average segment length 4,821 ft), together carrying 1,746,050 vehicle-miles traveled per day (≈637 million per year). By highway travel volume, St. Clair outranks 85% of counties in Alabama. Trucks constitute 20.6% of highway traffic.
Analytical insight
At 20.6%, highway truck share is 39% higher than the state average, marking St. Clair as a significant freight corridor - underscoring the importance of highway access for logistics operators. 83% of counties in Alabama see a lower highway truck share than St. Clair's 20.6%. St. Clair's highway truck count is higher than 98% of counties in Alabama, at roughly 3,749 trucks per day.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
4,753
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
6.7%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
29.2 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.
13.1%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
47.8 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$79,952
The non-highway road network in St. Clair County, Alabama supports a substantial volume of traffic. The average non-highway road carries 4,753 vehicles per day, 74% less than the average highway in the same area, which carries 18,227 vehicles per day. That average covers 358 non-highway road miles divided in 6,182 segments (average segment length 306 ft), together carrying 1,222,538 vehicle-miles traveled per day (≈446 million per year). Trucks constitute 6.7% of non-highway traffic.
Analytical insight
Compared to highways, non-highway routes see 67% fewer trucks by share. The non-highway congestion ratio of 13.1% is 11% lower than the state level, suggesting more efficient local mobility than the state average. 3% of counties in Alabama see shorter overall travel times than St. Clair. 94% of counties in Alabama see lower average driver income among trip origins than St. Clair. The driver population here skews older than 35% of counties in Alabama.
Time-of-Day & Seasonal Patterns
Analytical insight
In St. Clair County, Alabama, the peak hour concentrates about 7% of the day's traffic.
Traffic Flow Profile Comparison
Metric
St. Clair
Alabama
Average
Difference
Traffic
4,995
5,932
-15.8%
Truck % (Total Traffic)
14.9%
10.6%
+40.0%
Truck % (Highway)
20.6%
14.8%
+38.9%
Avg. Travel Time
29.5 min
31.8 min
-7.3%
Frequently Asked Questions
The average daily traffic volume is calculated at 4,995 vehicles per day, providing a baseline for daily operations and site assessment.
St. Clair's highway truck share of 20.6% is higher than 83% of counties in Alabama.
Drivers on St. Clair roads have a median age of 47 years, and the median household income of the neighborhoods trips originate from averages $79,371 - useful context for retail siting and customer profiling.
The average travel time for drivers is 29.5 minutes, offering a standard metric for commute and delivery route planning.
Approximately 54% of highway traffic and 15% of non-highway traffic consists of vehicles whose trip originates outside St. Clair County, Alabama. This indicates that a portion of highway traffic is regional pass-through, while local roads are more representative of resident and commuter activity.
Trucks account for approximately 14.9% of the total traffic mix across all road types, with a significantly higher concentration of 20.6% on highways.
Weekday peaks occur between 7:00 AM and 8:00 AM in the morning and between 3:00 PM and 7:00 PM in the evening - about 73% above the daily average.
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)
