About
We are stablizing the hillside by NW Bridge Avenue in NW Portland by installing a pinned mesh system on the rock hillside above NW Bridge Avenue (U.S. 30 Bypass) southeast of the St Johns Bridge.
The project includes removing hazardous vegetation and loose rock, and installing a pinned mesh system to prevent future rockfall events. The pinned mesh system will be an extension of the 2022 emergency rockfall response work, pictured below.
Above: Above: Pinned mesh system is installed on the hillside by NW Bridge Avenue in 2022 in the emergency response to a rockfall event.
Above: A close-up view of a pinned mesh system.
Location
U.S. 30
|
NW Bridge Avenue (U.S. 30 Bypass)
Cost and Funding
$3,463,704
Benefits
Future rockfall events will be greatly minimized after a pinned mesh rockfall system is installed to stabilize the slope.
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 slope above NW Bridge Avenue (U.S. 30 Bypass).
We recently completed emergency rockfall repair work on this hillside in response to a rockfall event on January 5, 2022. This project will make improvements to prevent additional rockfall in this area in the future.
More information about the emergency repair is available on the project website.
Photo: A picture of the rockfall event on NW Bridge Avenue in 2022.
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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Other projects in the area:
About: We are improving safety and preventing rockfall on NW Bridge Avenue (U.S. 30 Bypass) southeast of the St. Johns Bridge. The project removes hazardous vegetation, scales loose rock and installs pinned mesh to prevent future rockfall.
About: We are improving the long-term safety and lifespan of the St. Johns Bridge by repairing the concrete on the pier columns and arches under the bridge. Repairing the concrete will protect the bridge's steel internal frame and reinforcements from corrosion, maintaining the service life of this beloved Portland Historic Landmark.
About: We are improving safety and preventing rockfall on NW Bridge Avenue (U.S. 30 Bypass) southeast of the St. Johns Bridge. The project removes hazardous vegetation, scales loose rock and installs pinned mesh to prevent future rockfall.
About: We are preparing to construct 26 stormwater treatment facilities near three highways in Portland to protect fish, wildlife, water quality, and public health. These facilities filter water runoff and reduce pollutants from entering the Willamette River. Each treatment system will be connected to existing stormwater systems to reduce cost by expanding the performance of our current system.
About: The Oregon Department of Transportation (ODOT) is designing repair work to strengthen and lengthen the life of four culverts under U.S. 30 between NW Portland to Scappoose.