General contractors subcontracting specialty geotechnical work face a recurring problem: subs who can drill but can't manage the submittal, respond to field conditions, or carry the design liability the owner requires. That mismatch creates RFI delays, schedule holds, and change order disputes that land on your prime contract.
GeoStabilization International operates as a fully self-perform geotechnical subcontractor with in-house geotechnical engineers and 700+ field employees. When conditions change at the face, we adapt the design and keep production moving — no sub-sub coordination, no engineering gap.
GeoStabilization International provides specialty geotechnical subcontract services across slope stabilization, earth retention, rockfall mitigation, and ground improvement — every scope self-performed by our engineers and field crews.
From soil nail wall installation to tieback-supported soldier pile walls, GSI stabilizes slopes and supports excavations on highway, commercial, and infrastructure projects. Our Soil Nail Launcher™ installs over 1,800 LF of nails per day on accessible terrain.
Catch fences, draped mesh, rock bolting, and scaling are executed by our rockfall specialty crews with purpose-built limited-access drill rigs and spider excavators that reach terrain standard equipment cannot.
Compaction grouting, micropiles, and underpinning address bearing capacity, settlement, and foundation deficiency scopes. Our confined-space rigs handle interior and restricted-access installation environments.
When a geohazard event threatens your schedule, GeoStabilization International's emergency teams mobilize within 24 hours to stabilize failures and restore access.
Most specialty geotechnical subs subcontract their engineering and rent their equipment — three separate accountability chains on your project. When something goes wrong, every party points at the other two. GeoStabilization International employs its own geotechnical engineers, owns its drill rigs and access equipment, and fields its own OSHA-certified installation crews.
On complex projects, that integration means your RFI cycle is measured in hours, not weeks. When the drill encounters an unexpected obstruction or a soil horizon shifts the nail pattern, our field engineer makes the call on site and documents the change. That's what 20+ years and 8,000+ projects looks like in the field.
GeoStabilization International responds to subcontract scope inquiries within one business day. Call or complete the form below.
