45th Ave SW Culvert Replacement and Habitat Restoration

The City of Seattle is procuring the replacement of a deteriorated culvert along 45th Avenue SW and the associated restoration of surrounding habitat in King County, Washington. This project aims to improve stormwater infrastructure while enhancing ecological conditions in the area, with work focused on sustainable, environmentally responsible construction practices. The contract is designated for Minority Business Enterprise and Woman Business Enterprise participation, requiring contractors to hold valid NMSDC and WBENC certifications, respectively, ensuring broad inclusion of underrepresented small businesses in the bid process. Bid submissions are due by August 12, 2026, and the solicitation is open to qualified firms through the SBA’s opportunity portal. Shimmick Construction Company, Inc. is the lead contracting entity overseeing the project, serving as the point of contact for inquiries, with Jamie Miranda available via email and phone for questions regarding requirements and compliance. The NAICS code 237990 classifies this as other heavy and civil engineering construction, indicating the scope involves complex earthwork, hydraulic structures, and habitat rehabilitation rather than typical road or building infrastructure. The project site is located in southwest Seattle, and while no specific address is listed, performance is confined to the 45th Avenue SW corridor. Contractors must be prepared to meet both engineering standards for culvert installation and ecological guidelines for native vegetation and streambed restoration, reflecting a dual focus on civic infrastructure and environmental stewardship.