Route 309 is a Connecticut

Connecticut

Connecticut is a state in the New England region of the northeastern United States. It is bordered by Rhode Island to the east, Massachusetts to the north, and the state of New York to the west and the south .Connecticut is named for the Connecticut River, the major U.S. river that approximately...

 state highway in the northwestern Hartford

Hartford, Connecticut

Hartford is the capital of the U.S. state of Connecticut. The seat of Hartford County until Connecticut disbanded county government in 1960, it is the second most populous city on New England's largest river, the Connecticut River. As of the 2010 Census, Hartford's population was 124,775, making...

 suburbs running from Canton

Canton, Connecticut

Canton is a rural town, incorporated in 1806, in Hartford County, Connecticut. The population was 8,840 at the 2000 census, and has grown to 10,292 as of the 2010 census. It is bordered by Granby on the north, Simsbury on the east, Avon and Burlington on the south, New Hartford on the west, and...

 to Simsbury

Simsbury, Connecticut

Simsbury is a suburban town in Hartford County, Connecticut, United States. The population was 23,234 at the 2000 census. The town was incorporated as Connecticut's twenty-first town in May 1670.-Early history:...

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Route description

Route 309 begins at an intersection with Route 179

Connecticut Route 179

Route 179 is a state highway in northern Connecticut, running from Burlington to Hartland.-Route description:Route 179 begins at an intersection with Route 4 in eastern Burlington and heads north along the Farmington River into Canton...

 in North Canton and heads southeast into Simsbury. In Simsbury, it curves southeast and east to end at an intersection with Route 167

Connecticut Route 167

Route 167 is a Connecticut state highway in the western suburbs of Hartford, running from the Unionville section of Farmington to Simsbury center.-Route description:...

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History

North Canton Road and West Simsbury Road was established as SR 909 in 1962 as part of the Route Reclassification Act. The following year, SR 909 became a signed route, with the designation Route 309.

Junction list

Town	Road names	Junction	Milepost
Canton Canton, Connecticut Canton is a rural town, incorporated in 1806, in Hartford County, Connecticut. The population was 8,840 at the 2000 census, and has grown to 10,292 as of the 2010 census. It is bordered by Granby on the north, Simsbury on the east, Avon and Burlington on the south, New Hartford on the west, and... (1.36 miles)	West Simsbury Road		0.00
Simsbury Simsbury, Connecticut Simsbury is a suburban town in Hartford County, Connecticut, United States. The population was 23,234 at the 2000 census. The town was incorporated as Connecticut's twenty-first town in May 1670.-Early history:... (3.38 miles)	North Canton Road, Westledge Road, Farms Village Road		4.74