Connecticut State Route 66 runs east-west in Southern Tolland County. It goes from the Tolland/Windham County Line, near Willimantic, to the Tolland/Hartford County Line, near Gilead. CT St Rt 66 passes through the following towns in Tolland County. Columbia
Hebron CT St Rt 66 is multi-plexed in Tolland County. CT St Rt 66 intersects the following highways in Tolland County. U.S. Rt. 6, near Columbia.