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Project Title & Location
I-5 / 5th Ave NE to NE 92nd Street Noise Wall Project, Seattle
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Project Description
WSDOT has completed major construction work on three noise walls in the Licton Springs and north Green Lake Neighborhoods. Final landscaping will be completed in Fall 2009. WSDOT is also constructing one noise wall along I-5 in the Maple Leaf neighborhood. WSDOT is working with Sound Transit to coordinate construction with the North Link light rail project proposed for the same area. Construction is scheduled to begin Fall 2009.
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Contractor/Consultant
HDR Engineering, EnviroIssues, Parsons Brinckerhoff, David Evans & Associates, Perteet Engineering, So-Deep, Granite Construction dba Wilder Construction Company
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Recent Progress
Stage 1: Crews started constructing the three new noise walls in late June. Crews have completed clearing and grubbing work and have drilled shafts for the noise wall foundations. Panel installation began in late November. Construction is currently scheduled to end in spring 2009. The WSDOT team continues to coordinate with neighbors in the form of e-mail, telephone, fliers, and on-site visits to answer questions about the project.
Stage 2: Wall 1-South has been removed from the project. The design and construction of Wall 1-North includes the use of a non-concrete product called Carsonite AcoustaShield. Working with WSDOT experts, the design team selected this material instead of traditional materials to accommodate Sound Transit’s North Link light rail project in the same area. Carsonite AcoustaShield is lightweight and can be disassembled and reused, while traditional materials do not have this option. The design team hosted a public meeting with property owners near Wall 1-North on Nov. 19 to share design and landscaping information. Construction of Wall 1-North is scheduled to begin in summer/fall 2009.
For a full description of the project, please visit the project web page.
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Design Construction Impacts
Construction of Stage 1 began in June 2008. The work involves temporary modifications to off-ramps and possible lane restriction on I-5 during night work.
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Environmental Impacts / Compliance
The project's resultant noise reduction is beneficial to the surrounding environment and communities.
During construction the contractor will install erosion control measures to contain sediment and debris at the construction site.
Street use permits and noise variances for night time work have been obtained from the City of Seattle for Stage 1. Night work is not anticipated for Stage 2, but street use permits will be required.
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Impacts to Traffic
Stage 1 work involves temporary modifications to off-ramps and possible lane restriction on I-5 during night work.
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Milestones |
Scheduled |
Attained |
Milestone Outlook |
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Begin Preconstruction Engineering
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January 2006
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January 2006
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Complete.
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Environmental Document Complete
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January 2009
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On track to complete all environmental documentation. Milestone date is for the stage 2 project.
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Right of Way Certification Complete
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March 2009
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On track to complete all Right of Way Certifications. Milestone date is for the stage 2 project.
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Advertisement Date
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Stage 1 - Feb. 2008 Stage 2 - June 2009
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Stage 1 - Feb. 2008
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On track to meet Stage 2 Ad Date as scheduled.
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Operationally Complete
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June 2010
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Major construction on the Stage 2 project is scheduled to be completed in the fall of 2010. Plant establishment will continue for another two years.
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