AMP: 8 Location: Neck Rd and I-95, Old Lyme The US 1 concurrency is very short – in fact CT 156 remains the primary route and we use its mileposts. Just as 1 joins, it leaves to follow I-95 south over the Connecticut River. Stay straight to stay on 156 east. AMP: 8 Location: Neck … Continue reading Connecticut Route 156, US-1 to I-95/US-1