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Project Title & Location
15th St. SW to S. 180th St. Stage 3: HOV Lanes--Auburn to Renton
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Project Description
This project reduces congestion by adding a northbound high occupancy vehicle lane and adding ramp meters and high occupancy vehicle bypass lanes at several interchanges.
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Contractor/Consultant
Project is not yet advertised or awarded.
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Recent Progress
Revised wetland and buffer area impacts have been quantified and supplied to the landscape office to begin mitigation design for the CORPS permit application anticipated to be submitted in October 04. Flood plain impacts were reviewed with design adjustments made to meet local agency requirements. Have been meeting with local agencies to coordinate on their requirements.
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Design Construction Impacts
Recent advances in methods to treat and detain storm water runoff made the old design obsolete. The storm water system is being redesigned to meet the higher-level environmental requirements.
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Environmental Impacts / Compliance
Five-year-old permits obtained for the old design have expired. We must reapply after the storm water system is redesigned.
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Impacts to Traffic
The project will improve the efficiency of the general purpose and HOV lanes. Construction will require lane closures at times during non-peak hours. Public outreach will be conducted.
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