- The Finding of No Significant Impact (FONSI) for the Renton to Bellevue Project was published on Nov. 20, 2008.
- Currently the project is still largely unfunded.
- An update of the Environmental Assessment began in fall 2014 using corridor project savings.
Why is WSDOT
improving I-405 from Renton to Bellevue?
Travelers on the stretch of I-405 between SR 167 in Renton and Northeast 6th Street in downtown Bellevue face one the most gridlocked routes in the state, particularly during peak travel times. The Renton to Bellevue Widening and Express Toll Lanes project will improve traffic flow and safety by continuing to build improvements from the I-405 Master Plan.
Through this project, WSDOT plans to add one northbound and southbound lane on I-405 between SR 167 in Renton and NE 6th Street in downtown Bellevue. This new lane will be paired with the existing carpool lane to create a two-lane express toll lane system. The completed lanes will connect to the express toll lane system under construction between Bellevue and Lynnwood, as well as the SR 167 HOT lanes.
The Renton to Bellevue project is not yet funded for construction. WSDOT would like to use corridor savings to prepare the Renton to Bellevue project for construction.
The End Result
The Renton to Bellevue project will reduce congestion and improve safety along one of the state’s most congested sections of highway. This project will create a 40-mile system of express toll lanes that improves speeds and trip reliability for all travelers.
- Congestion relief. The addition of the northbound and southbound lanes between SR 167 in Renton and NE 6th Street in Bellevue reduces congestion by increasing capacity. Express toll lanes help manage demand for limited road space by allowing non-carpools to pay a toll to use the HOV lanes for a faster, more reliable trip.
- Safety. The additional capacity reduces the likelihood of sideswipe and congestion-related collisions.
- Environment. WSDOT's I-405 Corridor Program team is designing the Renton to Bellevue widening and express toll lanes project to avoid and minimize impacts to the environment.
What is the project timeline?
- July 2003: Environmental documentation began.
- July 2003: Five percent footprint design began.
- June 2005: Environmental scoping report released.
- March 9, 2006: Environmental Assessment published.
- Next steps: Prepare project for construction, starting with an update of the Environmental Assessment.
The project team started updating the Environmental Assessment in October 2014 using $1.6 million in corridor savings. The estimated total cost to make this project "shovel ready" is $55 million. The construction phase ($835 million) is currently unfunded.
How can I get more information?
I-405 Project Team Office
600 108th Avenue NE
Bellevue, WA 98004
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