The Thomas J. Hatem Memorial Bridge is a road bridge in northeast Maryland that crosses the Susquehanna River between Havre de Grace and Perryville via Garrett Island. It carries U.S. Route 40. It is the oldest of the eight toll facilities operated and maintained by the Maryland Transportation Authority, and the southernmost automotive bridge across the Susquehanna.

Havre de Grace, abbreviated HdG, is a city in Harford County, Maryland, United States. It is situated at the mouth of the Susquehanna River and the head of Chesapeake Bay. It is named after the port city of Le Havre, France, which in full was once Le Havre de Grâce.