PACE provided the engineering design to maintain water and sewer service for Seattle’s historic waterfront piers 54, 55, 56, and 57, Fire Station #5, and the Washington State Ferries’ Colman Dock during construction of the new seawall and rebuilding of Alaskan Way. The temporary containment wall was installed between the existing seawall and the existing piers. All existing utilities are fed from Alaskan Way, which means they needed to be relocated before the containment wall was installed. Our task was to find a way to maintain domestic water, fire, and sewer services to all piers. PACE found acceptable routes in the construction zones, below the docks, above grade, and below grade for the temporary utilities. Some of the piers remained open during the construction, requiring water and sewer services to be maintained and in accordance with the city of Seattle and Seattle Fire Department regulations.



Client Name



Seattle, WA


  • Temporary Utility Design