Old Saybrook, located at the mouth of the Connecticut River in Middlesex County, is intersected by several busy state highways and local routes that see heavy commuter and visitor traffic year-round. Based on crash reports and recent news, the most dangerous roadways in Old Saybrook include I-95, U.S. Route 1 (Boston Post Road), and Route 9. High traffic volumes, speeding, and poor pedestrian infrastructure contribute to frequent and sometimes deadly crashes on these corridors.