I-405 - I-5 to SR 169 Stage 1 Widening

Quarterly Project Report Update for Quarter Ending December 2003

Project Title & Location
I-405/West Valley Highway to Maple Valley Highway in Renton

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.

Contractor/Consultant
HNTB Corporation is the lead consultant of the General Engineering Consultant Team.

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 the Renton footprint design.  A corridor-wide programmatic Endangered Species Act Biological Assessment is in progress as is a corridor-wide traffic forecast analysis.

Coordination is occurring with both Renton and Tukwila to reach agreement on I-405 improvement features.

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.

Environmental Impacts / Compliance
A corridor wide Record of Decision for the programmatic FEIS was received in October 2002.  The project Environmental Assessment and documentations will begin January 2005.

Impacts to Traffic

It is expected that impacts to the traveling public can be minimized during construction.
Project Milestones Scheduled Attained Milestone Outlook
Preliminary Engineering Start (Nickel funding) July 2003 July 2003 Nickel funded engineering work began on schedule.
Finding of No Significant Impact January2007 On schedule, no issues at this time.
Right of Way Certification October 2007 On schedule, no issues at this time.
Request For Proposal April 2007

On schedule, no issues at this time.
Open to Traffic December 2010 On schedule, no issues at this time.
Project Cost Summary: Dollars in
millions 		Percent
of Total

Planned vs. Actual Expenditures
(Total Project Cost)
Project Expenditure Chart

Preliminary Engineering 21 15%
Right-of-Way 20 15%
Construction 95 70%
Funded Project Costs 136 100%

Nickel funds included in above costs

 136 100%

2005 Transportation Partnership Account

  For more information, go to www.wsdot.wa.gov/projects

Stacy Trussler, WSDOT Segment Manager @ (206) 768-5738 or E-mail: Trussler@wsdot.wa.gov