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City of Tukwila <br /> BOEING ACCESS ROAD OVER BNRR BRIDGE REHABILITATION PROJECT <br /> Construction Support <br /> Project Objective and Project Description <br /> This project will provide preliminary and final design and construction engineering services to the City of <br /> Tukwila (CITY)for the rehabilitation of the South Boeing Access Road over BNSF/UPRR Bridge. The <br /> Boeing Access Road Bridge, originally constructed in 1944 and widened in 1965, is a five span bridge, <br /> three steel girder spans and two concrete T-beam spans, supported on concrete piers founded on H-pile <br /> foundation. <br /> The project will be accomplished in the following three phases: <br /> Phase 1— Bridge rehabilitation Alternatives Evaluation <br /> Phase 1 of the project is to assess bridge conditions and identify its deficiencies by conducting an in- <br /> depth bridge inspection. Seismic analysis will also be performed to identify seismic vulnerability of the <br /> bridge under current AASHTO design level earthquake (1,000-year return period). The findings and <br /> recommendations, along with associated costs, will be summarized in a Design Report. <br /> Phase 2—Final Design (PS&E) <br /> Upon approval of the Design Report by the CITY,the final construction documents(PS&E)will be <br /> prepared for the retrofit measures recommended and selected in Phase 1. The final design and the <br /> construction PS&E documents will be prepared in accordance with the City and WSDOT standards. <br /> Phase 3—Construction Support <br /> The CONSULTANT will assist the CITY with design services during construction of the Boeing Access Road <br /> over BNRR Bridge and preparing bridge load rating analysis after completion of the bridge construction. <br /> The details of the tasks are described below. <br /> Project Schedule <br /> The preliminary project schedule will be developed upon notice to proceed for the project and updated <br /> as changes occur.The anticipated major milestone dates are: <br /> Phase 2: To be completed January 2016 <br /> Phase 3: Notice to Proceed February 2017 <br /> Ad for Construction February 2017 <br /> Construction begin March 2017 <br /> Construction completion April 2018 <br /> 13 <br />