Project Facts
- 27,000 drivers travel SR 202 each weekday
- Approximately 39,370 drivers travel westbound, and 37, 510 travel eastbound SR 520 between West Lake Sammamish Parkway and SR 202 each weekday.
- The city of Redmond is improving the intersection of SR 520 and NE Union Hill Road beginning summer 2008. This includes a right turn lane from SR 520 to NE Union Hill Road.
May 2008
- As weather allows, we will finish striping the new flyover ramp this month and build a fence around the ponds and along the pedestrian/bicycle path.
- We have completed approximately 80 percent of design work for the SR 520 widening portion of this project that begins in 2009.
- A graphic of the project improvements (pdf 51.4 kb)is available in pdf format.
- Learn more about the city of Redmond's award winning R-TRIP program, which rewards commuters, employers and residents who use alternate modes of transportation to and from Redmond.
We will widen State Route 520 in Redmond from two to four lanes in each direction. We will also build a new, metered flyover ramp from westbound SR 202 to westbound 520.
Why is WSDOT
widening both directions of State Route 520 in Redmond?
This project will reduce travel times, improve access and enhance safety for vehicles traveling on State Route 520 between the West Lake Sammamish Parkway interchange and State Route 202.
WSDOT has accelerated the project schedule by building the project in stages to deliver immediate benefits to drivers.
Stage 1
Crews will build a metered flyover ramp to connect westbound 202 to westbound SR 520.
Stage 2
Crews will widen SR 520 from two to four lanes by adding a merge lane and a carpool lane in both directions of SR 520.
The End Result
This is the final phase of a three-phase project started in the 1990s. The project includes a new, metered ramp that connects westbound SR 202 to westbound SR 520, and additional HOV and merge lanes on SR 520 between West Lake Sammamish Parkway and SR 202. These improvements will reduce congestion and enhance safety in the east Redmond and Sammamish areas.
This project will also tie into the city of Redmond's improvements at Union Hill Road, a planned widening on SR 202 from SR 520 to Sahalee Way and the SR 520 Bridge Replacement and HOV project (Trans-Lake).
Project Benefits
Congestion relief and improved safety. This project will dramatically reduce travel times, especially during peak commute hours, and eliminate points of heavy congestion. It will also reduce collisions in the area.
Stage 1
Instead of waiting in long queues at the on-ramp signal, a new flyover ramp carries drivers directly from SR 202 onto westbound SR 520. The flyover ramp will eliminate the chokepoint on SR 202 and reduce the number of collisions caused by vehicles running red lights at the NE 76th Street signal.
Stage 2
Widening SR 520 will reduce peak morning commute times by 60 percent and reduce peak evening commute times by 75 percent. It will also eliminate the existing single lane bottleneck between SR 202 and Avondale Road. Extended carpool lanes will reduce travel times for transit, carpools and vanpools by providing seamless access to the east end of the SR 520 floating bridge.
Environment. There are currently no stormwater treatment facilities in the project area. This project will construct facilities to treat stormwater runoff from the roadway, which will benefit salmon and other fish in nearby streams and rivers.
What is the project timeline?
In May 2007, we began construction on the westbound 202 flyover ramp to westbound SR 520. We expect this ramp to be complete by spring of 2008.
The design and environmental processes are underway for stage two. Construction on stage two will begin in 2009. The entire project should be complete by the end of 2011.
Public Involvement
Your thoughts and opinions are important to us. Contact Project Engineer Hung Huynh with questions and comments about this project at (206) 440-4311.
Environmental Protection
There are currently no stormwater facilities in the project area. This project will construct facilities to treat stormwater run off from the roadway, which will benefit salmon and other species of fish in nearby streams and rivers.
Please visit the WSDOT Environmental
Services Web site for more information.
Increasing safety is one of our priorities
By adding carpool and add/drop lanes as well as a flyover ramp, WSDOT reduces congestion and increases safety for drivers.
Will this project impact tribal resources?
Section 106 consultation was initiated with the Suquamish, Muckleshoot, Snoqualmie, Yakama and Duwamish Tribes. Follow up calls were made to each tribe to invite them to comment on the Cultural Resource Survey produced as part of the project.
Financial Information
This project is funded through the following fund sources.
- 2003 Gas Tax (Nickel Funding) - $105 million
- Total Funding From All Sources - $105 million
How can I get more information?
Contact:
Hien Trinh
WSDOT Project Engineer - Construction
14711 NE 29th Pl. #224
Bellevue, WA 98007
Phone: (425) 956-2100
E-mail: TrinhH@wsdot.wa.gov
Hung Huynh
WSDOT Project Engineer - Design
15700 Dayton Avenue North
PO Box 330310
Seattle, WA 98133
Phone: (206) 440-4311
E-mail: HuynhH@wsdot.wa.gov
Myly Posse
WSDOT Communications
15700 Dayton Avenue North
PO Box 330310
Seattle, WA 98133
Phone: (206) 440-4700
E-mail: PosseM@wsdot.wa.gov
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