Connecticut State Route 71 is a north-south highway in Northern New Haven County. It runs in the Meriden Area. CT St Rt 71 passes through the following towns in New Haven County. Wallingford Meriden CT St Rt 71 is not multi-plexed in New Haven County. CT St Rt 71 intersects the following highways in New Haven County. U.S. Rt. 5, at Wallingford. Connecticut State Route 150, at Wallingford. Connecticut State Route 70, at Meriden. Interstate 691, at Meriden.