The auxiliary lane will provide additional distance for on-ramp traffic to merge onto I-205 and reduce conflict between merging vehicles. This smooths traffic flow, reduces the potential for crashes and improves reliability.
Additional improvements include:
- Paving I-205 northbound in the project area.
- Installing two new sign structures.
- Storm water and water quality evaluation and planning.
What is an auxiliary lane?
Auxiliary lanes are designed to separate the slower vehicles entering or exiting the highway from the higher speed vehicles continuing to drive along the highway. They are built either from one interchange to the next, or span several interchanges.
Auxiliary lanes reduce conflict, improve traffic reliability and allow for a more stable flow of traffic at interchanges. Ultimately, fewer crashes are expected as the weaving and merging occurs in a separate lane from the rest of the highway.
OR 224 to Sunnbrook Blvd/Sunnyside Road
Cost and Funding
Project cost: $6,500,000