AMP: 20 Location: River Rd and Newent Rd, Lisbon Reassurance shield as 138 joins 12. AMP: 20 Location: Newent Rd and K of C Dr, Jewett City, Griswold As we cross the Quinebaug River, we’ll enter Jewett City in the town of Griswold. AMP: 20 Location: Newent Rd and K of C Dr, Jewett City, … Continue reading Connecticut Route 138, CT 12 to CT 12