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WSDOT is in the process of completing two Environmental Assessments for the upcoming I-405 Renton to Bellevue Widening and Express Toll Lanes construction contract.
WSDOT published the EA for this segment on April 2, 2018 and the Finding of No Significant Impact (FONSI) and Errata (pdf 17.58 mb) on July 17, 2018.
WSDOT published the EA for this segment on July 5, 2018 and the Finding of No Significant Impact (FONSI) and Errata (pdf 36.66 mb) on April 12, 2019.
In compliance with the National Environmental Policy Act (NEPA), the Environmental Assessment describes the purpose and need of the project and provides information to the public and decision makers about environmental effects and benefits of the project.
In this case, the EA compares future effects if WSDOT did or did not build the project, and provides a detailed analysis of the proposed project’s effects, including traffic, social and community effects, stormwater and ecosystems.