The Oregon Department of Transportation will begin construction in early 2018 for a project to improve operations and safety on Interstate 205 between Johnson Creek Boulevard and the Glenn Jackson Bridge. Work will include paving the freeway, ramps and intersections; building auxiliary lanes in three locations; installing ODOT RealTime signs; improving the entrance to the multi-use path at Glisan Street; and improving sidewalk curb ramps within the project area.
Construction will take place in 2018 and 2019. Work will mostly take place at night, with lane closures on I-205. Multiple overnight closures will take place on I-205 on-ramps and off-ramps in the project area. There will also be lane closures on cross-streets near on-ramps and off-ramps.
Design Phase: Summer 2015 – Fall 2018
Construction: Early 2018 – Late 2019
Dates are subject to change.
This project has construction and traffic impacts. Check back for more information as construction begins.
The Corridor Bottleneck Operations Study found areas on I-205 within this project area where auxiliary lanes could improve safety and reduce recurring congestion.
Feb 16, 2018 | News and Alerts
Traffic Impacts Saturday, Feb. 16 to Friday, Feb. 23:
No traffic Impacts
Project description: This project will improve operations and safety on I-205 between Johnson Creek Boulevard and the Glenn Jackson Bridge. Work will include paving the freeway, ramps and intersections; building auxiliary lanes in three locations; installing ODOT RealTime signs; improving the entrance to the multi-use path at Glisan Street; and improving sidewalk curb ramps within the project area. Construction will begin in 2018.
As part of this project starting in 2018, geotechnical investigations will begin in December 2017 to obtain more information about the physical properties of the underlying surface of the roadway, such as stability and drainage rates. Geotechnical drilling is being conducted so project engineers can confirm engineering properties for the design of ODOT’s new RealTime signs.
Can I merge onto I-205 from the new auxiliary lanes? How do they work?
Yes! Auxiliary lanes are extra lanes constructed between on- and off-ramps that allow drivers more room to safely merge onto the highway, in this case I-205.
Traffic can still access I-205 from the auxiliary lanes (between the exit and entrance ramps) by simply merging onto the main travel lanes. Auxiliary lanes also allow drivers entering the highway to stay in one lane as they travel to the next exit and avoid merging with traffic on the main travel lanes of I-205. This reduces congestion and improves safety by decreasing merging and weaving through lanes.
Please watch the project video to see how auxiliary lanes work.
The Federal Highway Administration has found that approximately 40 percent of all congestion nationwide can be attributed to recurring congestion – or “bottlenecks.” In 2009, ODOT started a new approach to deal with recurring localized freeway bottlenecks in the Portland metro area. The Corridor Bottleneck Operations Study identified areas of recurring congestion along five key Portland metro area highways (Interstate 5, Inerstate 84, Interstate 405, I-205 and U.S. 26) and recommended low-cost, highly effective solutions to improve safety and reduce congestion at these locations. In many cases, auxiliary lanes were the recommended solution.
The Corridor Bottleneck Operations Study found areas on I-205 within this project area where auxiliary lanes could improve safety and reduce recurring congestion. An auxiliary lane typically provides a direct connection on the freeway from one interchange ramp to the next. These “entrance-to-exit” lanes reduce the conflicts that cause congestion and crashes, by separating slower movements from the freeway mainline. Diagrams and benefits of the new auxiliary lanes are outlined on the project details page.
For an overview of the study, download the CBOS fact sheet.
For more information about this project, contact:
Dee Hidalgo, ODOT Community Affairs Coordinator
Phone: (503) 731-8237 | Email: Dee.Hidalgo@odot.state.or.us
Don Hamilton, ODOT Public Information Officer
Phone: (503) 731-8265 | Cell: (503) 704-7452 | Email: Don.B.Hamilton@odot.state.or.us
Kimberly Dinwiddie, ODOT Public Information Officer
Phone: (503) 731-8281 | Cell: (503) 539-8454 | Email: Kimberly.Dinwiddie@odot.state.or.us
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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