AMP: 1 Location: Spencer Plains Rd and I-95, Old Saybrook Reassurance shield after the I-95 junction. AMP: 1 Location: Spencer Plains Rd and Boston Post Rd, Old Saybrook Shortly thereafter, we’ll approach US 1. AMP: 1 Location: Spencer Plains Rd and Boston Post Rd, Old Saybrook Follow 1 north into downtown Old Saybrook and 1 … Continue reading Connecticut Route 166, I-95 to US-1