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The SR 520 Bridge Replacement and HOV Program is moving forward, in phases, with construction of the remaining improvements to SR 520 in Seattle – what we call the “Rest of the West.” The SR 520/I-5 Express Lanes Connection Project is one of the major stages of the highway's west side reconstruction. This project will create a dedicated, reversible transit and carpool connection between SR 520 and the I-5 express lanes, along with a reversible transit/carpool ramp at the I-5/Mercer Street interchange. This brief video shows how this new connection will work.
Seattle has experienced a population and employment boom, especially in the South Lake Union neighborhood. At the same time, the Eastside’s technology-driven cities continue to experience rapid growth. The region’s growth underscores the importance of a safe, reliable transit/HOV link between Seattle and the Eastside via SR 520. This project will extend SR 520’s new transit/HOV system onto the I-5 express lanes, creating a direct bus and carpool connection between SR 520, South Lake Union and downtown Seattle.
The end result
Project benefits
* The reversible transit/HOV lane initially will open only to transit; carpools will use the reversible lane following completion of a new Portage Bay Bridge and Roanoke lid.
This project is part of the remaining $1.6 billion in SR 520 improvements from Lake Washington to I-5 – the “Rest of the West.” These improvements are funded by the 2015 Connecting Washington transportation legislation. For more information on SR 520 funding, visit the Budget and Performance page.
Here are some resources you can use to stay informed about this project:
If your organization is interested in receiving a project briefing or presentation, please contact us.