Surrounded by the lush evergreen forests of Bainbridge Island, the Winslow Water Tank Replacement Project is a striking example of infrastructure designed with both functionality and community in mind. This 2,000,000-gallon, all-steel, all-welded fluted column elevated water storage tank was built to meet the growing water demands of the island while respecting its natural beauty.

Located near the local softball field, the tank has become a familiar backdrop for community activities a quiet yet essential presence that supports everyday life. Rather than standing out as an industrial structure, the tank was thoughtfully finished in deep evergreen tones, allowing it to blend seamlessly with the surrounding woods and maintain the island’s scenic character.

Seismic Resilience and Cost Efficiency Bainbridge Island lies within a high seismic zone, making structural integrity a top priority. During design evaluations, composite elevated tanks (concrete support structure with a steel tank atop) were considered, but the all-steel, all-welded fluted column design proved to be the more economical and practical solution. Its robust engineering ensures compliance with ASCE 7 Seismic Design Category D requirements, delivering long-term reliability without sacrificing aesthetics or budget.

Award Name

Elevated Tank

Company Name

CB&I

Award Year

2025

Product Details

  • Winslow Water Tank Replacement Project
  • City of Bainbridge Island, WA
  • Bainbridge Island, Washington, United States

Date Completed

abril 12, 2026

Construction Standard

AWWA D100

Overall Height

111 feet

Column Height

71 feet

Diameter

78 feet

Capacity

2000000

Steel Tonnage Used

596

Steel Thickness

0.25 to 1.75 inches