The Texas City Dike is a levee located in Texas City, Texas, United States that projects nearly 5 miles (8.0 km) south-east into the mouth of Galveston Bay. It is flanked by the north-eastern tip of Galveston Island and the south-western tip of the Bolivar Peninsula. The dike, one of the area's most beloved and enduring landmarks, was originally designed to reduce the impact of sediment accumulation along the lower Bay.