Matt Shanahan, PE, GE


Matt Shanahan, PE, GE

Matt Shanahan is a Principal who founded and manages GRI’s Vancouver office and has 30 years of geotechnical engineering experience in the Pacific Northwest. His experience includes bridges, roadway improvements, landslide evaluation and stabilization, deep foundations, riverbank stabilization and repair, deep excavations, and development of plans and specifications.

Why Matt for the Interstate Bridge Replacement?

Matt has developed relationships with many local agencies throughout Washington State as a direct result of managing several on-call contracts and successfully managing, budget and schedule, and delivering quality work products. Matt has worked on or managed over 300 projects in Washington, including being the contract manager for both Statewide WSDOT On-Call Contracts for Geotechnical services and the Unstable Slope Management Program.


  • American Society of Civil Engineers
  • American Council of Engineering Companies, Regional Director