- Route from Providence, Rhode Island to New York City passing through Connecticut. Today known as US Route 1.
- US 1 generally follows the old Boston Post Road and turnpike roads built to replace it. Specifically, the Greenwich Road, chartered in 1792, was the part in Greenwich, and became part of the longer Connecticut Turnpike (New York to Fairfield) in 1806. The New Haven and Milford Turnpike (1802) continued from Milford to New Haven, and the New London and Lyme Turnpike (1807) connected Old Lyme with New London.
Chartered in May 1806. Running through the towns of: Fairfield - Southport - Westport - Norwalk - Darien - Stamford - Greenwich - New York (Westchester Turnpike).