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Project Title & Location
I-405/SE 8th to I-90 (South Bellevue)
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Project Description
This project combines the Bellevue Nickel project which builds one additional southbound lane from vicinity of NE 8th to I-90 and one additional northbound lane from I-90 to SE 8th with the TPA project to create a new northbound auxiliary lane from 112th Ave SE to I-90.
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Contractor/Consultant
HNTB Corporation is the lead consultant of the General Engineering Consultant Team.
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Recent Progress
Nickel funding began July 1, 2003. On October 2, 2003 the I-405 Executive Committee endorsed the Implementation Plan to guide future engineering design and environmental assessment. Design team work has started on basemaps and surveying work. The right-of-way plan is in progress. A corridor-wide programmatic Endangered Species Act Biological Assessment is in progress as is a corridor-wide traffic forecast analysis.
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Design Construction Impacts
Expect moderate construction impacts. Plan to rebuild Wilburton tunnel within the center median area between Northbound and Southbound I-405 minimizing those potential construction impacts.
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Environmental Impacts / Compliance
A corridor wide Record of Decision for the programmatic FEIS was received in October 2002. Project level environmental assessment and documentation is underway for the Bellevue section.
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Impacts to Traffic
Will be more fully determined as this project's design is completed.
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Milestones |
Scheduled |
Attained |
Milestone Outlook |
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Preliminary Engineering Start (Nickel funding)
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July 1, 2003
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July 1, 2003
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Nickel funding began on schedule.
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Finding of No Significant Impact
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July 2007
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On schedule, no issues at this time.
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Right of Way Certification
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April 2008
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On schedule, no issues at this time.
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Request For Proposal
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October 2007
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On schedule, no issues at this time.
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Open to Traffic
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June 2011
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On schedule, no issues at this time.
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