Prince Cove marina bulkhead was in poor condition, with significant section loss and deterioration of the steel piles and an overall softening of the exposed face of the concrete panels at most locations in the tidal zone. Also, there existed gaps between the concrete panels and the steel pile flanges and in some locations, and active water seepage was observed through these gaps during low tide. Significant loss of fill was observed at several locations, which were evidenced by mounding of sediments at the mudline. The concrete cap was in fair condition with localized areas of spalling and cracking. The concrete ramp located adjacent to the north return wall was not being used due to full-depth cracking which washed out the fill, leaving the slab unsupported.
A subsurface investigation of the existing bulkhead tieback system revealed that the anchor rods retaining the existing bulkhead were sufficiently corroded to the point that they could not be used as part of the new bulkhead installation. The bulkhead reconstruction design consisted of the installation of a steel sheet pile bulkhead located just seaward of the existing bulkhead face, and utilizing a new helical anchor tieback system to secure the top of the bulkhead wall. The design included the placement of concrete fill between the existing and new bulkhead walls to eliminate the void space in this zone. The project also included the installation of a new water service for the marina as well as new electrical service and lighting along the bulkhead face.