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Traffic heat map of Sitka, Alaska: 16 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Harbor Drive and O'Connell Bridge

Sitka, Alaska Traffic Counts

Its drivers come from neighborhoods among the top 3 counties in Alaska for household income. This page breaks down traffic in Sitka, Alaska across 16 miles of monitored roads split into 642 segments, using multi-sourced mobile and sensor data. It goes beyond raw counts to truck flow, congestion and who is driving, so site selection and route planning rest on evidence.
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 Sitka, Alaska

Traffic

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

vehicles per day4,220
Trucks

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

6.0%
Average travel time

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

29.3 min
Congestion ratio

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

11.7%
Drivers’ average age

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

47.1 yrs
Drivers’ average income

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

$101,487

Our data shows 4,220 vehicles per day on the average road in Sitka, Alaska, and 57,530 vehicle-miles traveled per day (≈21.0 million per year) across its 16 miles of monitored roads. About 1 in 17 vehicles is a truck, in line with Alaska (6.7%).

Shorter trips than 89% of counties in Alaska

Sitka's average daily traffic volume is 11% lower than the state average - 4,220 vehicles per day against 4,749 - a factor worth weighing in site selection and logistics planning. Across the whole network, that travel is about 0.6% of Alaska's statewide total. 78% of counties in Alaska see less traffic than Sitka's 4,220 vehicles per day.

Journey times run 14% lower than the state level, at 29.3 minutes on average. Its average travel time of 29.3 minutes is shorter than 89% of counties in Alaska.

Congestion runs 21% lower than the state level, at a ratio of 11.7%, which means smoother traffic flow - crucial for traffic control improvement and logistics planning.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 8:00 AM–9:00 AM and PM peak 6:00 PM–7:00 PM, with volumes reaching approximately 81% higher than the daily average.
Weekend traffic:
Weekends are much quieter: volumes run about 22% below weekday levels, the signature of a commute-driven road network.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +15% versus the annual average.
Lowest month:
December is the quietest month, with volumes -16% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Sitka, Alaska, the peak hour concentrates about 8% of the day's traffic, and there is a strong seasonal swing of +15% in high season.

Sitka vs. Alaska Traffic Comparison

Sitka stays close to the Alaska average; the largest gap is its average travel time, 14% below.

MetricSitkaAlaska averageDifference
Traffic4,2204,749-11.1%
Truck % (Total Traffic)6.0%6.7%-11.7%
Avg. Travel Time29.3 min34.0 min-13.9%

How Sitka compares

Sitka against nearby boroughs and census areas

Set against the average of the 4 areas nearest to it, Sitka carries 62.2% more traffic on a typical road; it has the second busiest roads of the five.

Sitka and the 4 nearest county-level areas by centroid distance, with the Alaska average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Sitka4,2206.0%57,53029.3 min11.7%
Petersburg, Alaska2,3225.3%11,17333.0 min6.6%
Juneau, Alaska4,6766.0%408,08132.0 min12.0%
Haines, Alaska1,3857.3%1,65423.6 minN/A
Wrangell, Alaska2,0238.0%4,77735.6 min3.4%
Alaska average4,7496.7%N/A34.0 min14.9%

Sitka ranked within Alaska

Sitka sits in Alaska's top three on average driver income.

Sitka ranked among 19 county-level areas in Alaska (1 = highest).
MeasureSitkaAlaska rank
Traffic volume (AADT)4,220#5 of 19
Average travel time29.3 min#17 of 19
Average driver income$101,487#3 of 19
Average driver age47.1 yrs#8 of 19

The two ends of this table sit far apart: #3 of 19 on average driver income, against #17 of 19 on average travel time.

Busiest roads in Sitka, Alaska

On their busiest stretches, the three busiest roads in Sitka carry 5,426 vehicles a day on average, 29% more than the typical road in the county (4,220).

Harbor Drive leads with 6,035 vehicles a day, 253 of them trucks (4.2%). O'Connell Bridge is practically level with it at 5,950. O'Connell Bridge carries the most trucks, 273 a day (4.6% of its traffic), although it ranks #2 for all traffic.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Harbor DriveTertiary road · 6,035vehicles253trucks · 4.2%
Road class
Tertiary road
Congestion ratio
14.3%
Median trip time
29.3 min
Drivers’ median age
46.7 yrs
Drivers’ average income
$97,064

At 43% more than the county average, Harbor Drive draws drivers from neighborhoods averaging $97,064 in household income.

2O'Connell BridgeTertiary road · 5,950vehicles273trucks · 4.6%
Road class
Tertiary road
Congestion ratio
14.2%
Median trip time
28.9 min
Drivers’ median age
45.8 yrs
Drivers’ average income
$95,145

O'Connell Bridge is busy by local standards, at 41% more than the county average on its busiest stretch; trucks are 4.6% of it, below the county-wide 6.0%.

3Lake StreetTertiary road · 4,293vehicles228trucks · 5.3%
Road class
Tertiary road
Congestion ratio
7.2%
Median trip time
26.0 min
Drivers’ median age
47.0 yrs
Drivers’ average income
$95,403

Even at its busiest, Lake Street carries about the same as the county average; trucks are 5.3% of it, below the county-wide 6.0%.

4Halibut Point RoadSecondary road · 4,207vehicles248trucks · 5.9%
Road class
Secondary road
Congestion ratio
10.8%
Median trip time
28.1 min
Drivers’ median age
48.0 yrs
Drivers’ average income
$102,969

Halibut Point Road is a quieter road: its busiest stretch carries about the same as the county average; trucks are 5.9% of it, in line with the county-wide 6.0%.

5Airport RoadTertiary road · 3,437vehicles223trucks · 6.5%
Road class
Tertiary road
Congestion ratio
4.7%
Median trip time
29.3 min
Drivers’ median age
45.3 yrs
Drivers’ average income
$92,994

Even at its busiest, Airport Road carries 19% less than the county average; trucks are 6.5% of it, above the county-wide 6.0%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1O'Connell BridgeTertiary road · #2 by traffic5,950vehicles273trucks · 4.6%
2Harbor DriveTertiary road · #1 by traffic6,035vehicles253trucks · 4.2%
3Halibut Point RoadSecondary road · #4 by traffic4,207vehicles248trucks · 5.9%
4Lake StreetTertiary road · #3 by traffic4,293vehicles228trucks · 5.3%
5Airport RoadTertiary road · #5 by traffic3,437vehicles223trucks · 6.5%
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

SitkaDepartment 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 Sitka

The same traffic breakdown for the areas closest to Sitka, Alaska.

Need segment-level traffic data?

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