Santa Clara Valley Transportation Authority Advances Procurement of Specialized Construction for Silicon Valley Phase II Tunneling

en.Wedoany.com Reported - On November 9, the Kiewit Shea Traylor joint venture, comprising Kiewit, Shea, and Traylor of the United States, issued a request for quotations for high-pressure intervention subcontracting of the tunnel boring machine under Contract Package 2 of the Bay Area Rapid Transit Silicon Valley Phase II Extension Project, soliciting qualified disadvantaged business enterprises and small business enterprises to participate in tunnel construction. The scope of this procurement includes high-pressure environment intervention, equipment maintenance, and repair for the tunnel boring machine. The project owner is the Santa Clara Valley Transportation Authority of the United States, the contract number is V20221, and the deadline for subcontract quotations is November 25 at 16:00.

This specialized subcontracting service corresponds to Contract Package 2 for tunneling and trackwork of the Silicon Valley Phase II Extension Project. The project plans to construct a single-bore large-diameter tunnel approximately 5 miles (8 kilometers) long, extending from the south side of the existing Berryessa Station, passing through Santa Clara Street in downtown San Jose, and ultimately connecting to the planned Newhall Maintenance Facility in the City of Santa Clara. The tunnel has an internal diameter of approximately 43 feet (13.1 meters) and is configured as a single bore with dual tracks. The platform spaces at the downtown San Jose station and Diridon Station will also be located within the tunnel structure.

The focus of this subcontracting procurement is high-pressure environment intervention work for the tunnel boring machine. During tunnel boring operations, the cutterhead and related components require inspection, maintenance, and repair based on equipment operation and geological conditions, with certain operations requiring implementation in a controlled high-pressure environment. The Kiewit Shea Traylor joint venture is specifically soliciting specialized firms with relevant technical capabilities to provide equipment maintenance support for subsequent tunnel excavation construction. The notice lists this work as a separate subcontracting scope.

This procurement is open to eligible disadvantaged business enterprises and small business enterprises. Firms without relevant certification may also participate by forming a team with lower-tier subcontractors or other qualified firms. Interested firms must submit quotations through the BuildingConnected platform and possess a valid California contractor license and a Department of Industrial Relations (DIR) registration number. The selected firm must also comply with the project labor agreement and provide appropriate insurance and performance bonding capacity.

An online bid briefing session is scheduled for November 17, 2026, at 10:00, and the deadline for specialized subcontract quotations is November 25 at 16:00. Relevant construction drawings and procurement documents are provided through the BuildingConnected platform, and the project joint venture is responsible for receiving quotations and organizing subcontracting procurement.

The Bay Area Rapid Transit Silicon Valley Phase II Extension Project is implemented by the Santa Clara Valley Transportation Authority. The project will extend the existing Bay Area Rapid Transit line from Berryessa to downtown San Jose and the City of Santa Clara within Santa Clara County. Contract Package 2 is undertaken by the Kiewit Shea Traylor joint venture and covers tunneling and trackwork, including tunnel boring machine procurement, tunnel construction, precast lining installation, internal structure construction, ventilation and evacuation facility construction, and track laying. This high-pressure intervention subcontracting procurement is a specialized construction procurement under this contract package and is not a re-tender of the entire tunnel project.