Skip to main content

Project Details

​​SW 12th Avenue bridge over I-405 maintenance

Project Completed

Region 1: Portland metro and Hood River County (Portland, Multnomah)

Work is complete on a maintenance project ​on the SW 12th Ave bridge over I-405. This work improved the weight capacity by reinforcing concrete with steel rebar, which will maintain the long-term safety and use of this heavily traveled bridge. 


Construction Impacts

Work is complete and no more construction impacts are expected.



Due to the changing nature of vehicle weights, bridge load ratings need to increase to meet current design standards. In addition, concrete compresses from use over time and needs maintenance. By adding more steel rebar into the bridge support columns, bridge stability and load capacity is improved.

What Are The Benefits of This Project?
Maintains the safety of our roads: This work will maintain long-term safety by ensuring this bridge can continue serving travelers.

Improves our roads: Steel rebar in the bridge columns and reinforced concrete will increase the stability and load capacity of the bridge.


I-405 | ​​SW 12th Avenue bridge over I-405

Cost and Funding


Additional Information

​For Americans with Disabilities Act or Civil Rights Title VI accommodations, translation/ interpretation services, or more information call 503-731-4128, TTY (800) 735-2900 or Oregon Relay Service 7-1-1. 

¿Habla usted español? Podemos proveer la información en esta publicación en español. Para recibir la información en español, por favor llamé al (503) 731-4128. ​

Contacts & Media

Project Contacts

Community Affairs Coordinator
Lili Boicourt

Community Affairs Coordinator
Ellen Sweeney

Get Project Alerts

Sign up for the newsletter!

Last Updated

11/21/2019 10:29 AM

Project Number


Your browser is out-of-date! It has known security flaws and may not display all features of this and other websites. Learn how