SR 520 - West Lake Sammamish Parkway to State Route 202

Quarterly Project Report Update for Quarter Ending September 2004

Project Title & Location
SR 520 W Lake Sammamish Parkway to SR 202 - Redmond

Project Description
This project will widen State Route 520 to eight lanes between the West Lake Sammamish Parkway Interchange and the State Route 202 Interchange. The widening includes auxiliary lanes, ramps and high occupancy vehicle (HOV) lanes.

Contractor/Consultant
CH2MHILL selected as design consultant for project.

Recent Progress

Phase 1a agreement with our consultant CH2MHill was singed on December 22nd, 2003 and Notice To Proceed (NTP) was sent to the consultant.  The design work for this project is underway and the first chartering meeting was held on January 14th where local agencies and all stake holders where invited. 

Design Construction Impacts

Design and scope of work being coordinated with Cities of Redmond and Sammamish.


Impacts to buffer of Bear Creek are planned to be coordinated early with Redmond and Corps of Engineers adjacent project.

Environmental Impacts / Compliance

· Current proposal is to update 1992 approved SEPA EIS

·Redmond is planning a project to enhance and meander Bear Creek adjacent to SR 520 in this area

·Stormwater detention prior to release to Sammamish River may be required, but will be difficult due to right-of-way constraints, low roadway elevations and high water table.

Impacts to Traffic
· No significant impacts expected until Spring 2009 when project is under construction. Mitigation efforts will include a comprehensive public awareness campaign.

Project Milestones Scheduled Attained Milestone Outlook
Start Project Fall 2003 Yes High
Environmental Documentation Fall 2006   High
Design Documentation Fall 2007   High
Right of Way Certification Sep 2008   High
Contract Advertised Oct 2008   High
Project Cost Summary: Dollars in
millions 		Percent
of Total

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

Preliminary Engineering $11.1 10.9%
Right-of-Way $11.9 11.6%
Construction $79.3 77.5%
Funded Project Costs $102.3 100%

Nickel funds included in above costs

 $102.3 100%

2005 Transportation Partnership Account

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

David Edwards, WSDOT Project Engineer @ (206) 440-4312

or E-mail: edwardd@wsdot.wa.gov