Project documents will be uploaded throughout the study as they become available.
The attached documents are in PDF format; therefore, you will need a separate application to view them. One such application is Adobe Acrobat Reader Get Adobe Acrobat Reader, which is available for Windows and Mac.
SR 580 Corridor Study Purpose and Need (November 2021)
SR 580 Corridor Study Existing Conditions Report (August 2021)
SR 580 Corridor Study No-Build Future Conditions Memorandum (January 2022)
SR 580 Corridor Study Corridor Alternatives and Strategies Report (July 2024)
SR 580 Corridor Study Corridor Development Plan (Final – June 2025)
Project Advisory Group Presentations
Project Advisory Group Meeting #1 931 KB
Project Advisory Group Meeting #2 6.57 MB
Project Advisory Group Meeting #3 7.59 MB
Project Advisory Group Meeting #4 2.6 MB