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Tree removal is underway on each bank of the Willamette River underneath the Abernethy Bridge in Oregon City and West Linn to provide construction access for Phase 1A. This work must occur between September 1 – March 1 to protect nesting birds. Due to erosion concerns, the work is occurring now to avoid heavy rains. Work is anticipated to be complete by the end of November 2022. The area will be replanted at the end of Phase 1 construction.  

Anticipated schedule, subject to change: 

  • Oregon City – work will occur 10/18 through 10/22.  

    • Lane restrictions and flagging are allowed on Clackamette Drive near the Abernethy Bridge. 
  • West Linn – work will occur 10/25 through 10/29. 

    • One northbound lane may be closed on OR43 near the ramps to I-205:  
      • Daily Monday through Friday, between 9 a.m. to 3 p.m. 

      • Daily, Saturday through Sunday, between 7:00 a.m. and 12:00 p.m. 

Check or this website for updated traffic impacts. 

Phase 1A construction scheduled to begin late spring/early summer of 2022.

Phase 1A construction will begin in late spring/early summer of 2022. Site preparation for Phase 1A will begin in October 2021. Sign up for email updates on the home page or the Get Involved page or visit this page to learn about any traffic impacts or route detours due to construction.

General Construction Impacts

  • Phase 1A will consist of various construction impacts for travelers, including full weekend, nighttime directional closures and on- and off-ramp width restrictions. The closures will likely begin in 2023 and last through the end of Phase 1A.

  • Full freeway closures in both directions around the Abernethy Bridge will occur later in in Phase 1A construction in 2024 or 2025.

  • During freeway closures, I-205 northbound and southbound travelers and those traveling to local destinations in and around Oregon City and West Linn will follow detours.

Future Phases 

Phase 1A construction will begin in 2022, with construction of Phases 1B–1D to follow. 

Construction for Phases 1B, 1C and 1D is currently tentative and will be refined in the spring of 2022.