The Little Bay Bridge, or Little Bay Bridges, are a pair of four-lane girder bridges that carry a concurrency of U.S. Route 4, NH Route 16, and the Spaulding Turnpike across the mouth of Little Bay where it meets the Piscataqua River, between the city of Dover and the town of Newington in New Hampshire. As of August 2019, the bridges carry seven motor vehicle lanes with four shoulders, and one non-motorized multi-use path while the General Sullivan Bridge is closed.