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Traffic heat map of Alleghany County, North Carolina: 134 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Main Street and US 21

Alleghany County, North Carolina Traffic Counts

TrafficZoom tracks traffic on 134 road miles in Alleghany County, North Carolina, divided into 998 segments averaging 707 ft. Its busiest road, Main Street, carries 7,509 vehicles a day, 3.4 times the average road. Built from cross-verified mobile and road-sensor data, these counts help you size up a retail site, plan logistics routes or assess infrastructure needs.
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 Alleghany County, North Carolina

Traffic

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

vehicles per day2,226
Trucks

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

7.4%
Average travel time

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

37.2 min
Congestion ratio

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

7.3%
Drivers’ average age

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

55.5 yrs
Drivers’ average income

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

$47,167

A typical monitored road in Alleghany County, North Carolina sees 2,226 vehicles per day, while its 134 miles of monitored roads together handle 223,898 vehicle-miles traveled per day (≈81.7 million per year). About 1 in 14 vehicles is a truck, fewer than the 1 in 11 across North Carolina.

Quieter roads than 94% of counties in North Carolina

Alleghany sees 65% lower average daily traffic volume than the state average (2,226 vehicles per day against 6,332), suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. Network-wide, Alleghany accounts for less than 0.1% of North Carolina's statewide total of vehicle-miles. Alleghany carries less traffic than 94% of counties in North Carolina.

At 37.2 minutes, the average travel time is 15% higher than the state level. On travel time, Alleghany runs longer than 92% of counties in North Carolina.

The congestion ratio of 7.3% is 61% lower, pointing to smoother traffic flow than the state level - free-flowing roads make scheduled deliveries highly predictable.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In Alleghany County, North Carolina, the peak hour concentrates about 7% of the day's traffic.

Alleghany County vs. North Carolina Traffic Comparison

Alleghany County's biggest difference from the North Carolina average is its average daily traffic per road, 65% below it. Its truck share is also 16% below.

MetricAlleghany CountyNorth Carolina averageDifference
Traffic2,2266,332-64.8%
Truck % (Total Traffic)7.4%8.7%-15.7%
Avg. Travel Time37.2 min32.3 min+15.1%

How Alleghany County compares

Trips in Alleghany County run longer than in any nearby county or city

Against the 4 nearest areas, Alleghany County moves 36.1% of the total daily travel and carries 37.4% less traffic on a typical road; it has the fourth busiest roads of the five. Trips here run longer without running slower: distance, not congestion, is what drivers spend their time on.

Alleghany County and the 4 nearest county-level areas by centroid distance, with the North Carolina average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Alleghany County2,2267.4%223,89837.2 min7.3%
Grayson County, Virginia1,2228.8%188,55729.1 min3.2%
Galax City, Virginia6,8935.2%161,40332.0 min10.6%
Wilkes County, North Carolina3,7867.5%1,554,32629.5 min13.8%
Ashe County, North Carolina2,3196.3%579,37131.0 min10.5%
North Carolina average6,3328.7%N/A32.3 min18.6%

Alleghany County ranked within North Carolina

Average driver income places Alleghany County #99 of 100 in North Carolina - the bottom quarter of the state.

Alleghany County ranked among 100 county-level areas in North Carolina (1 = highest).
MeasureAlleghany CountyNorth Carolina rank
Traffic volume (AADT)2,226#94 of 100
Average travel time37.2 min#9 of 100
Average driver income$47,167#99 of 100
Average driver age55.5 yrs#4 of 100

Alleghany County ranks #9 of 100 on average travel time but #94 of 100 on average daily traffic volume. Some of the longest trips in North Carolina on some of its emptiest roads - distance, not congestion, is what sets travel time here.

Busiest roads in Alleghany County, North Carolina

The three busiest roads in Alleghany County average 5,634 vehicles a day, 2.5 times the county average of 2,226 across all its monitored roads.

Main Street leads with 7,509 vehicles a day, 593 of them trucks (7.9%). It tops the truck ranking too, with the most trucks.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Main StreetPrimary road · 7,509vehicles593trucks · 7.9%
Road class
Primary road
Congestion ratio
23.2%
Median trip time
37.0 min
Drivers’ median age
55.1 yrs
Drivers’ average income
$44,856

Travel on Main Street's busiest stretch runs 23% over free-flow time, against 7% across the county, so expect slower peak hours.

2US 21Primary road · 5,545vehicles383trucks · 6.9%
Road class
Primary road
Congestion ratio
13.9%
Median trip time
32.8 min
Drivers’ median age
55.2 yrs
Drivers’ average income
$45,995

At 2.5 times the county average, US 21 draws drivers from neighborhoods averaging $45,995 in household income.

3Whitehead StreetSecondary road · 3,847vehicles273trucks · 7.1%
Road class
Secondary road
Congestion ratio
7.9%
Median trip time
44.2 min
Drivers’ median age
55.6 yrs
Drivers’ average income
$45,176

Whitehead Street is busy by local standards, at 73% more than the county average on its busiest stretch; trucks are 7.1% of it, in line with the county-wide 7.4%.

4Sparta ParkwaySecondary road · 3,041vehicles195trucks · 6.4%
Road class
Secondary road
Congestion ratio
8.3%
Median trip time
41.2 min
Drivers’ median age
54.8 yrs
Drivers’ average income
$43,886

Sparta Parkway peaks at 3,041 vehicles a day, 37% more than the county average; trucks are 6.4% of it, below the county-wide 7.4%.

5NC 18Secondary road · 2,193vehicles166trucks · 7.5%
Road class
Secondary road
Congestion ratio
5.6%
Median trip time
32.3 min
Drivers’ median age
56.0 yrs
Drivers’ average income
$50,357

NC 18 is a quieter road: its busiest stretch carries about the same as the county average; trucks are 7.5% of it, in line with the county-wide 7.4%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Main StreetPrimary road · #1 by traffic7,509vehicles593trucks · 7.9%
2US 21Primary road · #2 by traffic5,545vehicles383trucks · 6.9%
3Whitehead StreetSecondary road · #3 by traffic3,847vehicles273trucks · 7.1%
4Sparta ParkwaySecondary road · #4 by traffic3,041vehicles195trucks · 6.4%
5NC 18Secondary road · #5 by traffic2,193vehicles166trucks · 7.5%
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

AlleghanyDepartment 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 Alleghany County

The same traffic breakdown for the areas closest to Alleghany County, North Carolina.

Need segment-level traffic data?

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