WSDOT - SR 520 W Lk Sammamish to SR 202 - June 2007 Quarterly Project Report

SR 520 - West Lake Sammamish Parkway to State Route 202
*Quarterly Project Report Update for Quarter Ending June 2007*

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 CH2M-HILL was selected as the prime design consultant for this project (both Stages 3A and 3B). Tri-State Construction has been selected as the prime construction contractor for the Flyover portion (Stage 3A).
Recent Progress Construction for stage 3A (the flyover ramp) is in progress. We are working with Region and Headquarter to obtain approval for the Design Decision Package, Deviations, and channelization plans for stage 3B. Revisions are being made to stormwater design to comply with new City of Redmond codes. This will also feed into the completion of the Biological Assessment (BA) for Stage 3B of the project. A meeting was held on May 23, 2007 to kick off the PS&E preparation for stage 3B.
Design Construction Impacts The Flyover ramp project will require closure of SR 202 for several nights in the vicinity of SR 520 to set bridge girders across SR 202. Stage 3B will require lane, ramps, and roadway closures. THe design team is looking into ways to minimize impact to the traveling public during the construction of stage 3B.
Environmental Impacts / Compliance WSDOT is working closely with City of Redmond, NMFS, USFW, and the MAP Team to provide water quality treatment and flow control for the project. The right of way constraints of Bear Creek and Marymoor Park and the low roadway elevations on SR 520 relative to the Sammamish River eliminate the use of many traditional BMPs.	Impacts to Traffic The construction of the flyover ramp (stage 3A) is in progress. There will be intermitten lane closure on SR 202. Night time closure of SR 202 will also be needed to set the flyover bridge girders across SR 202. This work will occur during the summer of 2007. Mitigation efforts will include a comprehensive public awareness campaign and implementing a detour route.

Project Milestones	Scheduled	Attained	Milestone Outlook
Start Project	Fall 2003	Yes	Completed.
Environmental Documentation	Spring 2006	June 2006	Completed for stage 3A.
Design Documentation	Fall 2006		The Design Documentation Package for Stage 3A was approved in December 2006. The Design Documentation Package for Stage 3B is scheduled to be approved in July 2007.
Right of Way Certification	Sep 2008		Right of Way is currently not required for this project.
Contract Advertised	Oct 2008		Construction of Stage 3A (the flyover ramp) is in progress. Stage 3B (HOV Widening) will be advertised at the end of 2008.

Project Cost Summary:	Dollars in millions	Percent of Total	Planned vs. Actual Expenditures (Total Project Cost)
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	None

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

Methqal Abu-Najem, WSDOT Project Engineer @ (206) 440-4312 or E-mail: abunajm@wsdot.wa.gov