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Project Details

Proposed Solutions

The project focuses on relieving congestion, traveler safety, and seismic resiliency on I-205 between Stafford Road and OR 213.

I-205 Widening

  • The project adds a third lane in each direction on the seven-mile stretch of I-205 between Stafford Road and OR 213. 
  • Widening I-205 requires blasting in order to remove the rock from the rock slope located in West Linn on the northbound side of I-205 between the Sunset Avenue overcrossing and just south of the OR 43 interchange. We will conduct additional analyses next year to determine impacts of the blasting, potential mitigations and duration of the work.

Bridge Replacements

  • Widening I-205 requires rebuilding West A Street and Sunset Avenue, which cross over I-205. The Tualatin River, Borland Road, and Woodbine Road bridges will also be replaced.

Seismic Upgrades

  • The project upgrades the Abernethy Bridge and the eight other I-205 bridges in the project area to withstand a major earthquake. I-205 is designated as a statewide north-south lifeline route, which means it must be operational quickly after a disaster renders other roadways unusable. This critical route will provide supplies and services to the region.

Interchange Improvements

In order to improve safety and travel-time predictability on I-205, the project makes changes to on- and off-ramps and intersections around interchanges.  

  • OR 43 interchange: the project removes the current I-205 northbound on-ramp from OR 43 northbound. Northbound traffic will instead use a new left turn to access the existing on-ramp loop to I-205 northbound. Consolidating these two separate northbound access points eliminates the merging and weaving that currently occurs and reduces rear end crashes. The Broadway Street bridge overcrossing will also be removed. See inset below.
  • Analysis is still underway for other intersection improvements at OR 43 and OR 99E. We will present these findings later in the design process.

Traveler Information SignsTraveler Information Signs (ODOT RealTime)

The project includes ODOT RealTime traffic information signs to help travelers get to where they’re going more safely and efficiently. These signs can display traffic flow information, roadway conditions, and advisory speeds limits.

Timeline

Preliminary Design Phase: July 2017 - June 2018

The purpose of this phase is to determine how and when the project could be constructed. In February 2018, ODOT will present methods and cost to construct improvements along I-205 and discuss the potential of moving forward with this project. ODOT currently has funding to complete preliminary design. Funding discussions regarding final design and construction will occur with the Oregon Legislature in the 2018 Legislative Session, which begins in February 2018. Keep checking back here for updates.