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Traffic heat map of San Juan County, Colorado: 34 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Greene Street and US 550

San Juan County, Colorado Traffic Counts

Traffic analytics for San Juan County, Colorado, calculated from real-world mobile and sensor networks on 155 road segments (34 road miles, about 1,157 ft each). The average road here carries 2,701 vehicles a day, 60% less than the Colorado average of 6,752. Use the figures below to move from assumptions to certainty on retail locations, logistics and road planning.
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 San Juan County, Colorado

Traffic

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

vehicles per day2,701
Trucks

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

7.1%
Average travel time

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

44.2 min
Congestion ratio

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

7.0%
Drivers’ average age

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

46.6 yrs
Drivers’ average income

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

$72,558

The average monitored road in San Juan County, Colorado carries 2,701 vehicles per day. Across its 34 miles of monitored roads, that adds up to 90,129 vehicle-miles traveled per day (≈32.9 million per year). Trucks are a smaller part of the mix than across Colorado: 7.1% against 8.4%.

Longer trips than 83% of counties in Colorado

San Juan's average daily traffic volume is 60% lower than the state average - 2,701 vehicles per day against 6,752 - suggesting less traffic load per road - quiet roads that suit freight movement more than drive-by retail. Network-wide, San Juan accounts for less than 0.1% of Colorado's statewide total of vehicle-miles. By volume, San Juan's 2,701 vehicles per day trails 60% of counties in Colorado.

Journey times run 33% higher than the state level, at 44.2 minutes on average. 83% of counties in Colorado have a shorter average travel time than San Juan's 44.2 minutes.

The congestion ratio of 7.0% is 56% lower, pointing to smoother traffic flow than the state level - delays are rare enough to plan travel times almost to the minute.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In San Juan County, Colorado, traffic has a sharp commute peak, with the busiest hour carrying about 9% of the day's traffic.

San Juan County vs. Colorado Traffic Comparison

Of the four measures, average daily traffic per road differs most: San Juan County runs 60% below the Colorado average. Its average travel time, by contrast, is 33% above.

MetricSan Juan CountyColorado averageDifference
Traffic2,7016,752-60.0%
Truck % (Total Traffic)7.1%8.4%-15.2%
Avg. Travel Time44.2 min33.2 min+33.2%

How San Juan County compares

Trips in San Juan County run longer than in any nearby county

Compared with its 4 closest neighbours, San Juan County moves 18.0% of the total daily travel and sees 39.9% longer typical trips; it has the third busiest roads of the five. Trips here run longer without running slower: distance, not congestion, is what drivers spend their time on.

San Juan County and the 4 nearest county-level areas by centroid distance, with the Colorado average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
San Juan County2,7017.1%90,12944.2 min7.0%
Hinsdale County, Colorado8958.2%20,18919.7 min5.8%
Ouray County, Colorado4,5527.2%284,13438.0 min16.7%
La Plata County, Colorado3,9787.2%1,647,48129.0 min12.2%
Mineral County, Colorado90810.3%56,15839.6 min4.8%
Colorado average6,7528.4%N/A33.2 min15.7%

San Juan County ranked within Colorado

Average travel time places San Juan County #12 of 64 in Colorado - the top quarter of the state.

San Juan County ranked among 64 county-level areas in Colorado (1 = highest).
MeasureSan Juan CountyColorado rank
Traffic volume (AADT)2,701#39 of 64
Average travel time44.2 min#12 of 64
Average driver income$72,558#33 of 64
Average driver age46.6 yrs#39 of 64

Busiest roads in San Juan County, Colorado

Traffic concentrates on a few corridors: the three busiest roads average 2,948 vehicles a day, against 2,701 on the average road in San Juan County.

Greene Street leads with 3,857 vehicles a day, 207 of them trucks (5.4%). US 550 carries the most trucks, 236 a day (7.3% of its traffic), although it ranks #2 for all traffic.

County Road 2 is a local road at heart: the median trip using it lasts 17.4 minutes, against 44.2 for the county.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Greene StreetSecondary road · 3,857vehicles207trucks · 5.4%
Road class
Secondary road
Median trip time
32.7 min
Drivers’ median age
45.7 yrs
Drivers’ average income
$74,000

Greene Street is a local road at heart: the median trip using it lasts 32.7 minutes, against 44.2 for the county.

2US 550Primary road · 3,236vehicles236trucks · 7.3%
Road class
Primary road
Congestion ratio
8.1%
Median trip time
53.5 min
Drivers’ median age
46.7 yrs
Drivers’ average income
$71,439

US 550 carries 20% more than the county average at its busiest, 236 of them trucks (7.3%, in line with the county-wide 7.1%).

3Million Dollar HighwayPrimary road · 1,751vehicles126trucks · 7.2%
Road class
Primary road
Congestion ratio
5.8%
Median trip time
46.0 min
Drivers’ median age
49.8 yrs
Drivers’ average income
$76,792

Even at its busiest, Million Dollar Highway carries 35% less than the county average; trucks are 7.2% of it, in line with the county-wide 7.1%.

4County Road 2Tertiary road · 1,111vehicles50trucks · 4.5%
Road class
Tertiary road
Median trip time
17.4 min
Drivers’ median age
48.2 yrs
Drivers’ average income
$73,407

County Road 2 is a quieter road: its busiest stretch carries 59% less than the county average; trucks are 4.5% of it, below the county-wide 7.1%.

5County Road 110Tertiary road · 398vehicles21trucks · 5.3%
Road class
Tertiary road
Median trip time
22.6 min
Drivers’ median age
44.6 yrs
Drivers’ average income
$73,889

Trips on County Road 110 are short, a median 22.6 minutes against 44.2 county-wide, so it mostly serves local errands and commutes.

Ranked by trucks per day

Cars and light vehiclesTrucks
1US 550Primary road · #2 by traffic3,236vehicles236trucks · 7.3%
2Greene StreetSecondary road · #1 by traffic3,857vehicles207trucks · 5.4%
3Million Dollar HighwayPrimary road · #3 by traffic1,751vehicles126trucks · 7.2%
4County Road 2Tertiary road · #4 by traffic1,111vehicles50trucks · 4.5%
5County Road 110Tertiary road · #5 by traffic398vehicles21trucks · 5.3%
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

San JuanDepartment 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 San Juan County

The same traffic breakdown for the areas closest to San Juan County, Colorado.

Need segment-level traffic data?

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