Connecticut Route 154 — Connecticut River Valley

A 28-mile route running roughly parallel to the western bank of the Connecticut River from Old Saybrook north through Essex, Deep River, Chester, and Haddam to Higganum. The 9-mile Haddam section carries a state scenic road designation for its river-view corridor along the Middlesex Turnpike, a toll road since 1802. The southern stretch passes through the historic villages of Essex and Chester — both well-preserved small towns with independent restaurants — before opening onto river panoramas near the Haddam Swing Bridge and Gillette Castle environs. Works well paired with CT-148 and the Chester-Hadlyme ferry (seasonal) for a full valley loop.