The timber piles of the existing I-5 bridge over the Columbia River is vulnerable to liquefaction in the event of a major earthquake. And there is no shortage of potential sources for the shaking in the area. A slip along the Juan de Fuca tectonic plate could be one potential source, as could a major fault zone along Portland’s west hills. These considerations are one of the reasons a new Columbia River Crossing project is being pursued. [Source: The Columbian via AGC SmartBrief. Image: The Columbian]
Related Articles
Nicholson Begins Chemical Grouting Work on Wilson Classical High School in Long Beach
June 6, 2016
rockman
Project Related
Comments Off on Nicholson Begins Chemical Grouting Work on Wilson Classical High School in Long Beach
Sierra El Mayor (Baja) 7.2 Magnitude Earthquake
April 7, 2010
rockman
Geologic Hazards
Comments Off on Sierra El Mayor (Baja) 7.2 Magnitude Earthquake
New GEER Report for January 2020 Puerto Rico Earthquake
August 10, 2020
rockman
Forensics and Failures, Geologic Hazards, Geologic Hazards
Comments Off on New GEER Report for January 2020 Puerto Rico Earthquake
The Geotechnical Extreme Events Reconnaissance (GEER) Association published their report last month on the January 7, 2020, Puerto Rico Earthquake. Here is the summary: A seismic sequence located along the southwestern coast of Puerto Rico […]