Water Main Rehab Package 5B

The City of Seattle, through Seattle Public Utilities and the Department of Finance and Administrative Services, is soliciting bids for Water Main Rehab Package 5B (PW#2025-051), with bids due November 18, 2026. Bidders must submit a Women and Minority Business Enterprise (WMBE) Inclusion Plan with the bid and earn a minimum of 10 points, or the bid will be deemed non-responsive and rejected. The project is a Covered Project subject to the City's Community Workforce Agreement (CWA) and Priority Hire program under Seattle Municipal Code 20.37, which provides construction work access to residents of economically distressed communities, women, and people of color.

The scope covers water main improvements at six Seattle sites: NW 55th Street (Phinney Ridge), W Raye Street (North Queen Anne), 43rd Avenue S (Mount Baker), S Graham Street (South Beacon Hill), 50th Avenue SW (Fauntleroy), and 50th Avenue SW spot improvements on private property. Work includes 6" to 12" ductile iron pipe, gate valves, a pressure reducing station, service and permanent connections, storm drain improvements, stormwater and erosion control, demolition, excavation dewatering, trench dams to prevent methane gas travel, contaminated and non-hazardous soil and water handling and disposal, and pavement restoration including ADA ramps.

The Engineer's Estimate is $5.6 million before sales tax. Bid guaranty is five percent of the total bid, including retail sales tax, and bids are submitted through the OpenGov platform. Responsible bidder requirements include Washington contractor registration, a UBI number, industrial insurance coverage, and prevailing wage training. Subcontractor identification and bonding requirements under RCW 39.30.060 apply to rebar, structural steel, HVAC, plumbing, and electrical work. The project is funded through the Water department budget.

Geotechnical reports for Sites 5B-1, 5B-2, 4, and 5 were posted October 23, 2026. The Site 5B-2 report recommends watertight sheet-pile shoring at the W Raye Street and 3rd Avenue W intersection, where artesian groundwater cannot be kept below excavation depth, and identifies liquefaction-induced settlement exceeding 9 inches in that area. The Site 5B-1 report recommends assuming groundwater near ground surface in the western half of the project area.