AMP: 6 Location: Slater Ave and Main St, Jewett City, Griswold Reassurance shield after the 12 split. AMP: 6 Location: Slater Ave and Preston Rd, Jewett City, Griswold Half a mile later, we’ll approach CT 164. AMP: 6 Location: Slater Ave and Preston Rd, Jewett City, Griswold Follow 164 south to Preston City. Stay on … Continue reading Connecticut Route 138, CT 12 to CT 164