Route 34 is a primary state highway in the U.S. state of Connecticut. Route 34 is 21.88 miles (35.21 km) long, and extends from Washington Avenue near I-84/US 6 in Newtown to CT 10 in New Haven.[2] The highways connects the New Haven and Danbury areas via the Lower Naugatuck River Valley. The portion of the route between New Haven and Derby was an early toll road known as the Derby Turnpike. It formerly ran on the Oak Street Connector until the early-2020s.
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