Mandalay Bay Seawalls

Mandalay Bay, outlined in purple above, was constructed between 1968 and 1973. It is comprised of 743 single-family attached and detached homes, 37 City-owned greenbelts and approximately 7 miles of public waterways. It was the first waterways development north of the Channel Islands bridge. At the time of construction, seawalls were built to create waterways throughout the newly built homes. Mandalay Bay Waterways Zone 1 Assessment District was created at the inception of the development for the maintenance of landscaping and waterways throughout the community.

When the seawalls were constructed in the mid-1960s, developers built the seawalls according to the building codes at that time, which were inferior to today’s building codes regarding seismic activity and soil and structure responses. The materials used to construct the seawalls have adversely reacted to the marine environment and began to degrade within 20 years of completion.

Over the years, City Staff and Residents have been meeting to discuss a solution to repairs and replacement of the Mandalay Bay Seawalls. Currently, City Staff and the Channel Islands Waterfront Homeowners Association (CIWHA) are working together on a path of action for funding and replacement of the Mandalay Bay Seawalls. Community informational meetings via Zoom will begin in early Fall. 

For more information on Mandalay Bay Waterways Zone 1 and Harbour Island Waterways Zone 2 Maintenance Districts, please visit the Waterways Assessment District page. 

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Current Project Updates

West Hemlock Seawall Repairs (3966-3900)
Jan. 2024: Environmental Permitting in progress 
2023: Plans, Specifications and Estimate completed

Mandalay Bay Seawall Monitoring Program (update)
Jan. 2024: The City has contracted with Duncan Engineering (estimated start Spring 2024)

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Previous Materials

Documents

10.6.20 Seawall Options

7.28.20 Public Works and Transportation Committee: City Council Commitment Staff Report

7.28.20 Public Works and Transportation Committee: Resolution on City Council Commitment 

3.6.20 Mandalay Bay Seawall Repair Conceptual Study and Feasibility Analysis

Presentations

7.28.20 Public Works and Transportation Committee: City Council Commitment

2.8.20 Channel Islands Waterfront Homeowners Association Annual Meeting Presentation

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Useful Links

Channel Island Waterfront Homeowners Association