By ANDY GARDNER

Figures from the state Department of Transportation show the busiest stretch of roadway in St. Lawrence County is in downtown Canton and averages close to 20,000 vehicles per day.

East Main Street in the village between Pleasant Street and state Route 310 averaged 18,442 vehicles per day in 2015, the most recent year for which figures were available.

The Village of Canton is also home to the second busiest roadway in the county. West Main Street between Miner and Gouverneur streets had an average daily traffic of 16,401. Canton has several other roadways with average daily traffic above 10,000. Main Street between Pleasant and Court streets averaged 14,129 vehicles per day and between Court and Miner streets saw 14,086 per day in 2015, DOT said. West Main Street from Gouverneur Street to the SUNY Canton entrance tallied 11,119 average daily traffic that year.

In Potsdam, the busiest stretch of road is state Route 56/Market Street between May Road and Sandstone Drive with an average daily traffic of 15,952. The second busiest is U.S. Route 11 between Maple Street and the Clarkson University entrance, averaging 15,558 vehicles per day. Market Street between Sandstone Drive and Elm Street averaged 14,789 in daily traffic; Sandstone Drive between Market Street and Maple Street/U.S. Route 11, 12,692; Main Street between Park and Maple streets, 12,198; Maple Street from Market Street to U.S. Route 11, 11,285; Elm Street from Market to Park streets, 11,007; Park Street from Elm to Main streets, 10,990.

The busiest road in the northern part of the county is a portion of state Route 37 in Ogdensburg. Between state Route 68 and Ford Street, that portion of the highway saw an average daily traffic of 13,808 in 2015, the most recent year for which figures were available. Also in Ogdensburg, state Route 37 between State and Canton streets averages 11,348 vehicles per day. Outside the city, the busiest highway running to and from the municipality is state Route 68 from the city limits to Marshall Road with average daily traffic of 6,470.

The second busiest stretch in the area is in Akwesasne. State Route 37 between state routes 95 and 37C averages 13,215 vehicles per day. Also in Akwesasne, state Route 37 from the St. Lawrence-Franklin County border to state Route 37C sees 12,465 vehicles per day, DOT said.

In Massena, the busiest road is state Route 420/South Main Street between state Route 37 and South Raquette Road with an average daily traffic of 11,767. State Route 37 between Traffic Circle Road (near the old GM site) and the St. Lawrence-Franklin County line averages 10,192 vehicles per day. And state Route 37 between the St. Lawrence Centre and state Route 37C has an average daily traffic of 9,791.

In Gouverneur, the busiest roadway is East Main Street from Scotch Settlement Road to William Street with an average daily traffic of 13,795. The busiest highway leading into the village is U.S. Route 11 from the western village limit to county Route 9. It averages 6,464 vehicles per day.

The busiest road in the entire North Country is in Plattsburgh. Cornelia Street between Interstate 87 and Churchill Street had an average daily traffic of 36,076, twice as much as the heaviest traffic in St. Lawrence County.

The busiest in New York state is the George Washington Bridge stretch of Interstate 95 in New York City, which connects it to Fort Lee, N.J. That road averaged 276,476 vehicles per day in 2015. That’s nearly 20 times the traffic as the busiest highway in St. Lawrence County.

The complete map showing daily average traffic for all of New York state is at goo.gl/dgtHTt.

The numbers above are calculated using what DOT calls Average Annual daily Traffic. The figures are calculated using a combination of areas where traffic is tallied year-round, and others where it is counted short-term. They use numbers taken from 6 a.m. on a Monday through noon on a Friday, according to Brian Staie, a NYSDOT engineering technician.

DOT will set up temporary counters around the area once per year for three to seven days. To adjust for seasonal traffic volumes and different classes of vehicles, they will take adjustment factors from the sites monitored 365 days per year and apply that to the short-term monitoring.

“We take what is called a short-term traffic count one time during the year at a location, usually from somewhere between three and seven days, and that gives you the average for that location for that,” Staie said. “We have continuous count sites throughout the entire state … one on Route 11 between Canton and Potsdam, one on Route 3 near Sevey’s Corners in the Cranberry Lake Area, one on Route 37 up near Ogdensburg and one further up on Route 37 near the St. Regis Mohawk reservation.”