Sound Transit Biddingo #CN 0154-25

Sound Transit Bi-Directional Load Test Services for Bridge Foundation

Sound Transit is seeking specialized services for a Bi-Directional Load Test to assess the foundation system of a cable-stayed bridge over the Duwamish River in Seattle, WA. - Government Buyer: - Central Puget Sound Regional Transit Authority (Sound Transit), Real Estate Division - Project Scope: - Bi-Directional Load Test for a permanent bridge foundation system at Terminal 102 (Harbor Island site) - Includes site preparation, test shaft construction, installation of bi-directional jack assembly and instrumentation, soil removal and contamination testing, shaft and site restoration - Coordination required with Port of Seattle, City of Seattle departments, BNSF Railway, and permitting authorities - Products/Services Requested: - Bi-Directional Load Test (single lump sum service) - No specific OEMs, part numbers, or product brands identified in the solicitation - Notable Requirements: - Strict insurance, safety, environmental, and data security standards - Maintenance of public and pedestrian access during work - Compliance with environmental and site restoration standards - Adherence to construction duration and site access limitations set by the Port of Seattle - Potential for adjustments to AASHTO LRFD resistance factors based on test results - No specific OEMs or commercial vendors are named in the solicitation or attachments

Description

This solicitation is for a Bi-Directional Load Test to evaluate the constructability and performance of a permanent foundation system for a cable-stayed bridge over the Duwamish River. The test aims to verify design assumptions and improve confidence in design parameters to optimize the final foundation design. Conducted at the Harbor Island site near the West Seattle Bridge, the load test will provide data to inform the final design team regarding load responses and may lead to adjustments in AASHTO LRFD resistance factors. The project involves construction activities including site preparation, test shaft construction, instrumentation installation, and site restoration.

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