Location: Post Rd and Old Post Rd, Charlestown Just after the RI 1A split, keep left for a u-turn. Location: Post Rd and Old Post Rd, Charlestown U-turn to return to US-1 south. Location: Post Rd and Old Post Rd, Charlestown Reassurance shield at the next u-turn. Location: Post Rd and Old Post Rd, Charlestown … Continue reading U.S. Route 1, RI 1A to RI 1A