Keller’s Foundation Drilling feature: ground improvement lessons for HSR engineers
Reviewed by Tom Sullivan

First reported on Geoengineer.org – News
30 Second Briefing
Keller engineers Samuel DeMott and Matt Redfern detail ground improvement and deep foundation works for California High-Speed Rail’s Dutch John Cut and Cole Slough Bridge foundations in the May/June ADSC Foundation Drilling Magazine. The feature focuses on managing challenging Central Valley alluvium and soft delta deposits using techniques such as drilled shafts and ground treatment to control settlement and lateral deformation under high-speed rail loadings. For practitioners, the case study offers design–construction lessons on stiffness matching, construction tolerances and performance verification for rail structures on weak ground.
Technical Brief
- Lessons on integrating ground treatment with deep foundations are directly transferable to other high-speed rail corridors.
Our Take
Keller’s presence in ADSC’s Foundation Drilling Magazine for California work aligns with our other recent coverage of the firm in Deep Foundations Magazine, signalling an active push to showcase complex foundation solutions across multiple US geotechnical publications.
This feature comes as Keller North America formalises its field/project engineer development programme and reshapes leadership in its US Foundations unit, suggesting that high-visibility projects in California are being used as reference cases to support both talent development and market positioning in the United States.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.


