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Project Title & Location
I-5 - Mellen Street to Grand Mound
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Project Description
This project will widen sections 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 two stages - Stage 1: Blakeslee Junction to Grand Mound, Stage 2: Mellen Street to Blakeslee Junction.
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Contractor/Consultant
David Evans and Associates, Inc. is performing a portion of the environmental reports for Stage 2.
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Recent Progress
Stage 1: Environmental DCE is complete for Blakeslee to Grand Mound. Environmental permits have been received. The project team is completing the 100% PS&E package for review. Right of way acquisition is taking place.
Stage 2: The project team is advancing preliminary design and environmental documentation.
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Design Construction Impacts
Stage 1: Construction is currently scheduled for 2010. Close coordination of construction staging is on-going with Olympic Region's Grand Mound to Maytown project.
Stage 2: Construction is currently scheduled for 2012. Anticipated construction impacts will be assessed as the design phase is advanced. Constructability is a major element in the design of this complex portion of I-5.
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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: Potential environmental impacts are being evaluated as part of the environmental documentation process.
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Impacts to Traffic
Stage 1 & 2: The design team will generate effective staging plans to minimize construction impacts to the traveling public.
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