This page delivers traffic analytics for Lewis County, Washington. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Lewis County, Washington among 670 road miles divided in 10,458 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 338 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.
3,359
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
11.5%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
32.3 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.
12.7%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
48.1 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$76,659
Our data indicates an estimated average traffic volume of 3,359 vehicles per day in Lewis County, Washington that results in 2,907,821 vehicle-miles traveled per day (≈1.1 billion per year). The traffic stream is comprised of an average of 1 truck for every 9 vehicles. Typical time spent behind the wheel per trip is 32.3 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the Washington state averages: Lewis sees 54% lower average daily traffic volume than the state average (3,359 vehicles per day against 7,322), suggesting less demand on each road - a critical factor for logistics and site planning. In total volume terms, its road network carries 2,907,821 vehicle-miles traveled per day (≈1.1 billion per year), about 1.9% of Washington's statewide total. Journey times run 3% lower than the state level, at 32.3 minutes on average. Congestion runs 36% lower than the state level, at a ratio of 12.7% - smoother traffic flow - crucial for traffic control improvement and logistics planning. By volume, Lewis's 3,359 vehicles per day outpaces 39% of counties in Washington. 29% of counties in Washington have a shorter average travel time than Lewis's 32.3 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.
9,419
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
14.2%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
47.1 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.
21.1%
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.
$76,115
A significant volume of traffic in Lewis County, Washington utilizes the highway network. The average highway carries 9,419 vehicles per day, 234% more than the average non-highway road in the same area, which carries 2,824 vehicles per day. That average covers 144 highway road miles divided in 848 segments (average segment length 900 ft), together carrying 1,989,168 vehicle-miles traveled per day (≈726 million per year). By highway travel volume, Lewis outranks 69% of counties in Washington. Trucks constitute 14.2% of highway traffic.
Analytical insight
At 14.2%, highway truck share is 49% higher than the state average, marking Lewis as a significant freight corridor - underscoring the importance of highway access for logistics operators. Lewis's highway truck share (14.2%) is higher than 81% of counties in Washington. 72% of counties in Washington see fewer highway trucks per day than Lewis's roughly 1,338.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
2,824
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
5.5%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
31.0 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.
12.0%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
48.7 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$77,209
The non-highway road network in Lewis County, Washington supports a substantial volume of traffic. The average non-highway road carries 2,824 vehicles per day, 70% less than the average highway in the same area, which carries 9,419 vehicles per day. That average covers 526 non-highway road miles divided in 9,610 segments (average segment length 289 ft), together carrying 918,653 vehicle-miles traveled per day (≈335 million per year). Trucks constitute 5.5% of non-highway traffic.
Analytical insight
Non-highway roads carry a truck concentration that's 61% lower than the highway network. Non-highway congestion (12.0%) runs 39% lower than the state average, pointing to smoother local traffic flow. 29% of counties in Washington see shorter overall travel times than Lewis. 45% of counties in Washington see lower average driver income among trip origins than Lewis. Lewis's median driver age is higher than 55% of counties in Washington.
Time-of-Day & Seasonal Patterns
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and PM peak 2:00 PM–5:00 PM, with volumes reaching approximately 89% higher than the daily average.
Weekend traffic:
Weekend volumes run about 9% above weekday levels.
Seasonal Fluctuation
Busy season:
July–September is the high season, with volumes +28% versus the annual average.
Lowest month:
November is the quietest month, with volumes -20% versus the annual average.
Analytical insight
In Lewis County, Washington, the peak hour concentrates about 8% of the day's traffic, and seasonal swing is pronounced at +28% in high season.
Traffic Flow Profile Comparison
Metric
Lewis
Washington
Average
Difference
Traffic
3,359
7,322
-54.1%
Truck % (Total Traffic)
11.5%
7.1%
+61.1%
Truck % (Highway)
14.2%
9.5%
+49.3%
Avg. Travel Time
32.3 min
33.2 min
-2.5%
Frequently Asked Questions
The average daily traffic volume is calculated at 3,359 vehicles per day, providing a baseline for daily operations and site assessment.
Lewis carries more highway trucks by raw volume than 72% of counties in Washington, at roughly 1,338 per day.
Weekday peaks occur between 10:00 AM and 12:00 PM in the morning and between 2:00 PM and 5:00 PM in the evening - about 89% above the daily average.
Traffic volumes are typically 28% higher during July–September. Volumes drop to their lowest levels in November, averaging 2,677 vehicles per day - a 20% decrease from the annual average.
Drivers on Lewis roads have a median age of 48 years, and the median household income of the neighborhoods trips originate from averages $76,659 - useful context for retail siting and customer profiling.
The average travel time for drivers is 32.3 minutes, offering a standard metric for commute and delivery route planning.
Approximately 18% of highway traffic and 7% of non-highway traffic consists of vehicles whose trip originates outside Lewis County, Washington. This indicates that a portion of highway traffic is regional pass-through, while local roads are more representative of resident and commuter activity.
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)
