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Project-Details





U.S. 30: NW Bridge Ave Rockfall Emergency Repair

Construction Phase

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


​​​​​​​​​​Emergency repair work is complete 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. 


Impacts

Traffic Impact

​Update 4/23/22:

Emergency repairs are complete. NW Bridge Avenue (U.S. 30 Bypass) is open. Thank you for your patience during our work.

Construction Impacts

The slope stabilization required installation of reinforcing anchors in the slope. 

Additional time was needed due to unpredictable drilling conditions in this area, additional anchors needed due to the condition and geometry of the rock slope, and the availability of materials.

Our work crews ran two drill rigs, determined to be the safest operations for work equipment due to the limited space and work areas. ​

We have completed repairs as of April 23, 2022. NW Bridge Ave. (U.S. 30 Bypass) is reopened. ​

Schedule

Our contractor stabilized the slope, drilled, installed anchors and placed mesh and border cables on the slope before securing the anchors.

NW Bridge Ave. was repaved and restriped after work on the slope was safely stabilized.

Our schedule is subject to change based on unforeseen weather and work site conditions.

Details

About

​​We performed emergency repair work in response to a rockfall that occurred on January 5, 2022. The rockfall occurred on the hillside next to NW Bridge Avenue, (U.S. 30 Bypass) southeast of the west end of the St. Johns Bridge. 

Enough rock had to be removed to safely drill the anchors that will reinforce the slope. Our contractor had two drills working to install the anchors needed to reinforce the slope and anchor the pinned mesh in place. Drilling activities were challenging in this unstable rock slope area. 

Drilling_Bridge Ave_Picture.JPG

Pictured above: our contractor drilling the last of the supplemental anchors on the rock slope above NW Bridge Avenue (U.S. 30 Bypass), April 20, 2022.

Rockfall_at NW Bridge Ave_Progres_Feb 2022.JPG

Pictured above: Rock slope area after scaling and hazardous vegetation removal. Crews are drilling on the hillside above NW Bridge Avenue (U.S. 30 Bypass), southeast of the west end of the St. Johns Bridge, February 2022.

Rockfall_at NW Bridge Ave_January 2022.JPG

Pictured above: Rockfall debris on the hillside on NW Bridge Avenue (U.S. 30 Bypass), southeast of the west end of the St. Johns Bridge, January 5, 2022.

Rockfall_at NW Bridge Ave_2-January 2022.JPG

Pictured above: Rockfall debris and vegetation on the hillside on NW Bridge Avenue (U.S. 30 Bypass), southeast of the west end of St. Johns Bridge, January 6, 2022.

Location

U.S. 30BY |

​​NW Bridge Avenue (U.S. 30 Bypass)

Cost and Funding

Federal Emergency Funds

Contractor

​Triptych Construction (rockfall mitigation contractor)

Benefits

ODOT geotechnical engineers have determined that a pinned mesh rockfall system needs to be installed to stabilize the slope and minimize the potential for additional rockfall events in this area.

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. 

​Si desea obtener información sobre este proyecto traducida al español, sírvase llamar al 503-731-4128.
 
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Contacts & Media

Project Contacts

Community Affairs Coordinator
Dee Hidalgo
Email
dee.hidalgo@ODOT.oregon.gov
Phone
503-731-8230

Public Information Officer
Don Hamilton
Email
don.hamilton@odot.state.or.us
Phone
503-731-8265

Last Updated

4/23/2022 8:47 AM

Project Number

R1-Maintenance_Emergency Repairs