8e. Presentation
Shilshole Bay Marina X Dock Rehabilitation
Item No.: 8e_Supp Date: May 10, 2022 Shilshole Bay Marina: X Dock Rehabilitation Commission Meeting | May 10, 2022 Kenneth R. Lyles Director of Maritime Operations and Security Darrel Dare Senior Manager, Recreational Boating Julie Yun Capital Project Manager Mark Longridge Capital Project Manager Agenda X Dock Fixed Pier 1. Commission Request 2. Project Context 3. Alternatives Considered 4. Timeline 5. Questions 2 Action Requested Request Commission Authorization from the Executive Director to: Request Commission authorization for the Executive Director to advertise and execute a major public works construction contract for the Shilshole Bay Marina X-Dock Rehabilitation in the amount of $1,200,000 (total authorization $1,650,000). 3 Project Context: Location X Dock Fixed Pier North Dry Storage Shilshole Bay Marina X Dock at Shilshole Bay Marina 4 Project Context: Current Condition 5 Project context: Scope Supporting Structure ("Substructure") X Dock Fixed Pier Replace 20 existing creosote timber piles with 13 steel piles utilizing waterside crane barges to minimize construction impacts. North Dry Storage Superstructure (not in scope) Retain superstructure for the remainder of its service life. 6 Alternatives Considered Alternative 1: No/delayed action (Not Recommended) Cost Implications: Reduced cost for avoiding work but potential for increased maintenance cost related to more advanced repair needs in the future. Pros: 1. Preserve Port capital funding and resources for other priority projects and financial initiatives. Cons: 1. Potential integrity risk to the overall pier structure due to continued deterioration. 2. Potential commercial/financial risk due unplanned maintenance and implementation of load restrictions to facility operations. Alternative 2: Proceed with current design (Recommended) Cost Implications: Allocation of $1,200,000 in the Capital Plan. Pros: 1. Address deterioration of the supporting structure. 2. Improved service life with steel piles, as compared to the existing timber piles. 3. Replace creosote timber piles with more environmentally-friendly steel piles. Cons: 1. Higher upfront capital cost. 2. Limited temporary construction impacts. 7 Project Timeline Activity Date Commission Design Authorization (complete) January 2021 Commission Construction Authorization May 2022 Design and Permitting Complete May 2022 Advertise Construction June 2022 Construction Start October 2022 In-use date March 2023 8 Questions? 9
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