Project Update: ODOT will close I-5 in SW Portland, south of the Terwilliger curves, from June 28 to July 1 for bridge replacement
ODOT will be closing I-5 for one full weekend in SW Portland, south of the Terwilliger curves, from June 28 to July 1. The closure is necessary to replace a worn-out bridge structure on I-5, bring it up to current seismic standards, and ensure continued reliability for travelers. A new and improved SW 26th Avenue is expected to reopen tomorrow, May 1.
Visit the project website to learn more about the construction impacts, detours and the improvements on I-5 and SW 26th Avenue.
Above: An aerial photo of I-5 over SW 26th Avenue during construction of the new structure under I-5.
Construction started in spring 2023 and will continue through summer 2024.
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I-5 will close in both directions for over 4 miles from Friday, June 28 at 9 p.m. to Monday, July 1 at 5 a.m. Several I-5 on-ramps will also close.
- There may be up to 10 nighttime directional closures on I-5 (five northbound and five southbound) from 11 p.m. to 5 a.m. in June or July.
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SW 26th Avenue is expected to reopen tomorrow, May 1. It will temporarily close again during the weekend I-5 is closed, June 28 to July 1. There may be occasional brief closures of SW 26th Avenue for final work.
- Periodic lane and shoulder closures will occur on I-5.
Interstate 5 Traffic Impacts
I-5 will close in both directions for over 4 miles from Friday, June 28 at 9 p.m. to Monday, July 1 at 5 a.m. Several on-ramps will also close to prevent drivers from getting on I-5 in the area during the closure. Congestion is to be expected during the I-5 weekend closure.
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Southbound I-5 will close between the SW Terwilliger Boulevard off-ramp and the SW Capitol Highway on-ramp.
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Northbound I-5 will close between the SW Barbur Boulevard off-ramp and the SW Terwilliger Boulevard on-ramp.
I-5 Closure Map
Above: I-5 closure map showing closure area and on-ramp closures.
Detour Routes for I-5 Closure
Regional and through travelers should use Interstate 205 and OR 217. A local detour will use SW Barbur Boulevard.
 Above: Regional detour will use Interstate 205 and OR 217.
Additional Nighttime I-5 Closures
To prepare for the closure and finish work, additional nighttime work is required on I-5. This will include lane closures but not a full closure. The following are allowed for the contractor to complete the work:
- Nighttime directional closures on I-5 (five northbound and five southbound) from 11 p.m. to 5 a.m.
- Nighttime double-lane closures on I-5 from 10 p.m. to 5 a.m. before and after the I-5 weekend closure.
- Nighttime single-lane closures on I-5 in both directions from 8 p.m. to 5 a.m. on weekdays and from 8 p.m. to 8 a.m. on weekends.
Visit the project website and sign up for email updates to be notified of upcoming impacts: bit.ly/swi-5repair
Nighttime Noise
We've limited nighttime work so that project noise is less disruptive to the surrounding neighborhoods. When nighttime work is needed, neighbors may hear construction noise. Use the 24/7 nighttime noise hotline to discuss any noise concerns: 503-275-7892.
Project Timeline
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Spring 2023: Construction began, SW 26th Avenue closed to vehicle traffic for about a year.
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Summer 2024: Final work on the bridge deck with I-5 impacts. Closure of I-5 in both directions from Friday, June 28 at 9 p.m. to Monday, July 1 at 5 a.m. Up to 10 nighttime directional closures of I-5 (five northbound and five southbound) from 11 p.m. to 5 a.m. Additional lane closures to prepare for and complete the work. Visit the project website for updates and more information.
Collaboration with PBOT on SW 26th Avenue
ODOT is collaborating with the Portland Bureau of Transportation on the new features we’re building on SW 26th Avenue. This includes connecting to the new multiuse path PBOT is building as part of their OR 99W/SW Barbur Blvd Area Sidewalk Infill Project and adding new bike lanes on SW Barbur Court, improving continued pedestrian and bicycle infrastructure and connectivity in the area.
Questions or comments?
Ellen Waters, ODOT Community Affairs
971-336-1249
ellen.waters@odot.oregon.gov
Find more project information and sign-up for update: bit.ly/swi-5repair
Other Area Projects
RealTime Signs Ross Island Bridge–SW Terwilliger
ODOT will install 12 RealTime Variable Advisory Speed (VAS) signs along a busy stretch of Interstate 5 from the Ross Island Bridge to Terwilliger Boulevard. Realtime VAS signs give drivers notice to slow down before they reach a problem area—improving traffic flow and helping to reduce rear-end crashes and congestion. Visit the project website to learn more: bit.ly/I-5VariableSigns
OR 217
This project will improve safety and reduce bottlenecks on OR 217 by adding auxiliary lanes, or ramp to ramp connections, between Beaverton-Hillsdale Highway and OR 99W. Construction is underway on OR 217 and surrounding streets. Visit the project website to learn more: www.hwy217.org
I-205 Abernethy Bridge Project
This project will make the Abernethy Bridge the first earthquake-ready interstate bridge over the Willamette River in the Portland area. We are also improving on- and off-ramps near the bridge, along with making improvements to local bike and pedestrian routes. Visit the project website to learn more: www.i205corridor.org
OR99W: (Barbur Blvd) SW 26th Way - SW 26th Ave
The 2024-2027 Statewide Transportation Improvements Program funds this pedestrian safety project. This project has not begun, but preliminary information can be found on page 70 of the R1 STIP document.
I-5 Aurora-Donald Interchange at Exit 278
This project is the final phase to build the full diverging diamond interchange. To do this we are replacing the two I-5 bridges at the exit with one new bridge. We’ll also widen and lengthen the freeway ramps to help with queuing. Visit the project website to learn more.
Translation/Interpretation Accommodations
For ADA Title II or Civil Rights Title VI accommodations, translation/interpretation services or for additional information call 503-731-4128, TTY (800) 735-2900 or use the statewide Oregon Relay Service: 7-1-1.
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