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Project Title & Location
I-405/West Valley Highway to Maple Valley Highway in Renton
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Project Description
Project includes Nickel and TPA projects components to construct additional northbound and southbound lanes from I-5 to SR 169 and a separate southbound SR 167 lane between I-405 to SE 180th St.
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Contractor/Consultant
HNTB Corporation is the lead consultant of the General Engineering Consultant Team.
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Recent Progress
Completed conceptual design and estimates for the Renton nickel project. Full production of the Renton nickel contract documents will begin Fall 2005. The corridor-wide Access Point Decision Report is nearly complete. The Environmental Document will begin January 2005. The team is developing a conceptual design and cost estimate for an Early Environmental Investment (EEI) site. Construction of an EEI site allows us to mitigate environmental impacts prior to construction of the nickel transportation project.
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Design Construction Impacts
Minimal impacts are expected since this is essentially a widening project of the northbound and southbound I-405 legs approaching the SR 167 Interchange. The Benson Structure Overcrossing will be replaced. This project also extends the southbound SR 167 HOV lane north to begin under the I-405 Structure. Some widening and restriping of southbound SR 167 will be required.
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Environmental Impacts / Compliance
A corridor wide Record of Decision for the programmatic FEIS was received in October 2002. The project Environmental documentation will begin January 2005. Conceptual design work is underway for an EEI site.
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Impacts to Traffic
It is expected that impacts to the traveling public can be minimized during construction.
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Milestones |
Scheduled |
Attained |
Milestone Outlook |
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Preliminary Engineering Start (Nickel funding)
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July 2003
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July 2003
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Nickel funded engineering work began on schedule.
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Finding of No Significant Impact
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January2007
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On schedule, no issues at this time.
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Right of Way Certification
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October 2007
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On schedule, no issues at this time.
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Request For Proposal
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April 2007
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On schedule, no issues at this time.
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Open to Traffic
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December 2010
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On schedule, no issues at this time.
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