Connecticut State Route 99 is a north-south highway in South-Central Hartford County. CT St Rt 99 passes through the following towns in Hartford County. Wetherfield Rocky Hill CT St Rt 99 is multi-plexed in Hartford County. CT St Rt 99 intersects the following highways in Hartford County. U.S. Rt. 5, at Wetherfield. Connecticut State Route 15, at Wetherfield. Connecticut State Route 314, at Wetherfield. Connecticut State Route 175, at Weatherfield. Connecticut State Route 3, at Weatherfield. Interstate 91, at Rocky Hill. Connecticut State Route 160, at Rocky Hill.
