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U.S. 30 Bypass: NW Bridge Ave. Rockfall Prevention

Design Phase

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

​​​​​We are designing a rockfall prevention project to the rock slope above NW Bridge Avenue (U.S. 30 Bypass) southeast of the St. Johns Bridge to prevent additional rockfall.  The project includes removing hazardous vegetation, scale loose rock and install pinned mesh to prevent rockfall.


Traffic Impact

​Anticipated traffic impacts and closure information will be provided before construction begins.

Construction Impacts

​Construction is planned for 2023. Traffic impacts will include daytime and nighttime full closures of NW Bridge Ave. (U.S. 30 Bypass) with detours for travelers and for freight traffic. 

We will share more details and information about schedule, traffic impacts including closures, detours and noise before construction begins.

TriMet's Line 16 bus between Portland City Center, St. Johns and Sauvie Island will be impacted during construction for this project. Check​ closer to construction for more details.


Construction is planned for 2023. Schedule is subject to change based on unforeseen weather and site conditions.



​We are designing a rockfall prevention project to improve safety on the rock slope above U.S. 30 Bypass (NW Bridge Avenue), on the southeast end of the St Johns Bridge to prevent additional rockfall. ​

The project includes removing hazardous vegetation, scaling loose rock and installing a pinned mesh system to prevent rockfall.​


U.S. 30 |

​​NW Bridge Avenue (U.S. 30 Bypass)

Cost and Funding

​ $​3,463,704

What Problem Will This Improve?

​This location has a history of known rockfalls. Within the past five years, there have been five rockfalls on the rock slop above NW Bridge Ave. (U.S. 30 Bypass).

This project will make improvements to prevent additional rockfall in this area in the future.

We recently completed emergency rockfall repair work in this area, slightly east of this future project on NW Bridge Ave. in response to a rockfall that occurred on January 5, 2022.  The rockfall occurred along the hillside above NW Bridge Avenue (US 30 Bypass), southeast of the west end of the St. Johns Bridge.

More information about the current emergency repair work can be found by visiting the project website.

Additional Information

For ADA (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. 

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Contacts & Media

Project Contacts

Community Affairs Coordinator
Ellen Sweeney

Public Information Officer
Don Hamilton

Last Updated

7/20/2022 4:36 PM

Project Number