• Project Experience | Utility | Fort Mifflin Seawall

Fort Mifflin Sea Wall Stabilization
Delaware River, Philadelphia, PA

The Fort Mifflin Seawall dates back to the 19th century. The national landmark is located along the Delaware River, approximately 1.5 miles South of the confluence of the Schuylkill River and the Delaware River.

Over the years, storm-generated waves and other weather factors severely damaged the seawall shielding Old Fort Mifflin. The destruction included a large breach, absent wall stones and attrition behind the wall.

To restore the sea wall AP crews placied a riprap along the base of the wall; completely reconstructing a portion of the stone masonry wall; repairing parts of the stone masonry wall by grouting and resetting wall stones; excavating and backfilling of sinkholes with “repair sea wall sinkholes”.