- Southern Terminus:
- Connecticut Turnpike (I-95) and Oak Street Connector (CT 34) in New Haven
- Northern Terminus:
- Connecticut-Massachusetts state line
- 58.00 miles
- New Haven, Middlesex, Hartford
I-91 begins at the Connecticut Turnpike (I-95) and the Oak Street Connector (CT 34) in New Haven and runs north. It provides a north/south route through and between New Haven and Hartford. It continues north through Massachusetts and Vermont to the Canadian border.
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