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Project Title & Location
I-5 - Mellen Street to Grand Mound
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Project Description
This project will widen seven miles of I-5 between Mellen Street in Lewis County and the Grand Mound interchange in Thurston County to increase traffic flow and safety. The project will be constructed in three stages- Stage 1: Blakeslee Junction to Grand Mound, Stage 2: Mellen Street to Blakeslee Junction, and Stage 3: Mellen Street Improvements.
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Contractor/Consultant
DEA
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Recent Progress
Stage 1: Consultant revising Environmental Discipline Reports for DCE.
30% Design complete and working on right-of-way plans.
Stage 2: Working with consultant to develop a Scope of Work to accommodate environmental documentation and associated design activities.
Stage 3: WSDOT working on design and discussions with the City of Centralia for removing a proportion of the old wastewater treatment plant.
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Design Construction Impacts
Stage 1: Construction is currently scheduled for 2009. Anticipated construction impacts will be assessed as the design phase is advanced. Close coordination of construction staging is on going with the Grand Mound to Maytown project.
Stage 2: Construction is currently scheduled for 2011. Anticipated construction impacts will be assessed as the design phase is advanced.
Stage 3: Construction is currently scheduled for 2009. Anticipated construction impacts will be assessed as the design phase is advanced.
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Environmental Impacts / Compliance
Stage 1: Stormwater treatment for flow control will require off-site mitigation and right-of-way acquisition.
Stage 2: Currently working with consultant to develop a Scope of Work to conduct applicable environmental documentation.
Stage 3: Design working on defining the project impacts for environmental mitigation.
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Impacts to Traffic
Stage 1, 2, & 3: The design team will generate effective staging plans to minimize construction impacts to the traveling public.
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