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.

Site Preparation and Tree Removal (Fall 2021)

Site preparation consists mostly of tree removal, which must be completed between September 1 and March 1 to avoid nesting birds. Trees will be removed along either bank of the Willamette River underneath the Abernethy Bridge in Oregon City and West Linn to provide construction access. Due to erosion concerns, ODOT plans to perform the work in the fall of 2021 before heavy rain is anticipated.

  • On the Oregon City side of the river, all required tree removal will occur in October of 2021. Crews will remove trees from the site.

  • On the West Linn side of the river, only some of the required tree removal will occur in October of 2021. Crews will mulch trees in place and remove any remaining trees during Phase 1A 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 fall of 2021.