WSDOT published the Finding of No Significant Impact (FONSI) and Errata (pdf 17.58 mb) for the I-405, Downtown Bellevue Vicinity Express Toll Lanes Project on July 17, 2018.

WSDOT published the Environmental Assessment (pdf 16.04 mb) for the I-405, Downtown Bellevue Vicinity Express Toll Lanes Project on April 2, 2018.

The State Environmental Protection Act (SEPA) Determination of Non-Significance (pdf 458 kb) for the I-405, Downtown Bellevue Vicinity Express Toll Lanes Project was also published on April 2, 2018.

Summary

• Project overview and context
• Summary of Environmental Assessment findings

Documents for download

• Environmental Assessment (pdf 16.04 mb)

Discipline Reports

• Attachment A: Transportation Discipline Report (pdf 19.81 mb)
• Attachment B: Air Quality Discipline Report (pdf 16.31 mb)
• Attachment C: Noise Discipline Report (pdf 11.57 mb)
• Attachment D: Environmental Justice Discipline Report (pdf 15.58 mb)
• Attachment E: Geology and Soils Discipline Report (pdf 11.16 mb)
• Attachment F: Visual Impact Assessment Discipline Report (pdf 15.99 mb)
• Attachment G: Water Resources Discipline Report (pdf 7.52 mb)
• Attachment H: Hazardous Materials Technical Memorandum (pdf 54.92 mb)
• Attachment I: Cultural Resources Survey Discipline Report (pdf 9.69 mb)