Project Description

The Western Shore Wharf is a 74.5 meter long and 5.8 meter wide timber crib wharf. It consists of conjoined rock-filled timber cribs with a cast-in place reinforced concrete topping slab. HEC provided detailed design drawings for a temporary (5-year life span) rehabilitation of the existing wharf structure to allow for its continued safe function until such time as budget became available for more permanent repair. This work included a preliminary condition survey to review and document existing conditions above the low water mark along with supervision of a diving inspection to review and document existing conditions below the low water mark. Findings from this site investigation were utilized to develop detailed design/rehabilitation drawings to stabilize the structure. The rehabilitation plan developed by HEC included:

• Replacing highly deteriorated timbers in the rock-filled cribbing above the low water mark;
• Reinforcing transverse cribbing lines with inverted moment frames using steel beams;
• Removing and replacing concrete topping slab (deck) to allow for infilling cribs where there was significant loss of ballasting material;
• Replacement of deteriorated or missing timber fenders and access ladders; and
• Local concrete repairs to the existing concrete slipway.