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North America’s Leader in Geohazard Mitigation

From emergency landslide repairs to long-term rockfall mitigation, GeoStabilization International delivers rapid, engineered solutions that keep critical infrastructure open and safe. With emergency response, patented technologies, and a proven design/build/warranty model, we restore stability in days, not weeks.

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Solutions

Our solutions address the full range of geohazard challenges—designed to restore safety, protect infrastructure, and prevent future failures.

  • Earth Retention – Design and construction of retaining walls, soil nails, and GCS® walls to stabilize slopes and support excavations.

  • Emergency Response – Rapid mobilization for landslides, rockfalls, scour, and other geohazards—often restoring access within days.

  • Foundations – Deep foundation systems, including micropiles and anchors, to support structures in difficult soil or access conditions.

  • Ground Improvement – Grouting, soil stabilization, and drainage techniques that strengthen the ground and control water movement.

  • Rockfall Mitigation – Scaling, mesh, drapery, and barrier systems that prevent loose rock from reaching roadways, railways, or facilities.

  • Bridges – Scour protection, abutment stabilization, and deep foundation solutions to safeguard bridge structures from erosion and failure.

Soil Nail Launcher installing nails on a roadside slope.
Collapsed roadway with guardrail damaged by a landslide exposing soil beneath.
Drill rig installing soil nails into a shotcrete-covered slope beside a road.
Worker operating orange drilling equipment for grouting on a muddy construction site.
Rock slope alongside roadway secured with rockfall mesh and bolts.
Bridge abutment stabilized with shotcrete and retaining wall beneath roadway.
Soil Nail Launcher installing nails on a roadside slope.
Collapsed roadway with guardrail damaged by a landslide exposing soil beneath.
Drill rig installing soil nails into a shotcrete-covered slope beside a road.
Worker operating orange drilling equipment for grouting on a muddy construction site.
Rock slope alongside roadway secured with rockfall mesh and bolts.
Bridge abutment stabilized with shotcrete and retaining wall beneath roadway.
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Expert Solutions. Proven Results.

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Technology

We combine proven engineering with proprietary innovations and specialized equipment to deliver faster, safer, and more effective geohazard solutions.

  • Soil Nail Launcher™ – Fires nails into slopes at speeds up to 250 mph for immediate stabilization with minimal disruption.

  • Shotcrete – Sprayed concrete applied by robotic or manual methods to protect slopes and retaining structures.

  • Spider Excavators – All-terrain walking excavators capable of working on slopes up to 50°, eliminating the need for costly access roads.

  • RailJET® – Purpose-built system for geohazard mitigation in rail-adjacent or limited-access environments.

  • Horizontal Drains – High-speed installation of drains to relieve groundwater pressure and enhance slope stability.

  • Micropiles – High-capacity, small-diameter deep foundation elements ideal for restricted-access or unstable ground conditions.

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Excavator-mounted drill installing soil nails into a steep grassy slope.
Excavator applying shotcrete to stabilize a roadside slope.
Spider excavator operating on an extremely steep rocky mountainside.
Worker operating RailJET drilling equipment on a railroad track.
Water flowing from a horizontal drain installed in an exposed slope.
Excavator-mounted drill installing soil nails into a steep grassy slope.
Excavator applying shotcrete to stabilize a roadside slope.
Spider excavator operating on an extremely steep rocky mountainside.
Worker operating RailJET drilling equipment on a railroad track.
Water flowing from a horizontal drain installed in an exposed slope.

Who We Work With

Worker suspended by ropes drilling into a rock face above a quarry.

Industries We Serve

We partner with asset owners, agencies, and contractors across North America to protect people, property, and infrastructure from geohazards.

  • Transportation – DOTs, railroads, and municipalities rely on GSI for rapid slope stabilization, scour mitigation, and rockfall protection.

  • Mining & Quarries – Highwall stabilization, rock scaling, and haul road protection that improves safety without disrupting production.

  • Energy & Utilities – Slope reinforcement, foundation stabilization, and scour protection for pipelines, substations, and renewable energy facilities.

  • Commercial & Industrial – Retaining wall repairs, soil stabilization, and erosion control for private developments and industrial operations.

  • Municipal & Government – Scalable mitigation strategies for public works, parks, and other civic infrastructure.

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Engineered Design Build Solutions

Bid Build
Project Partner

OUR PROCESS

Design/Build Solutions

Our design/build solutions are customized to the varying demands and site constraints of each geohazard we encounter. Every project that we take on is completed with one goal in mind: always provide the best value.

STEP 1

ASSESSMENT

No-obligation site visit by a qualified geotechnical engineer.

STEP 2

ANALYSIS

Fixed-cost proposal developed from available geotechnical and site visit information.

STEP 3

DESIGN

In-house engineering team assists or completes the design.

STEP 4

INSTALLATION

Rapid emergency response across the U.S.; designs optimized in real time.

WARRANTY

Multi-year performance warranty covers materials, installation, and overall system performance.

WARRANTY

Multi-year performance warranty covers materials, installation, and overall system performance.

Navigating the Bid Build Process

Here's how we excel in navigating this crucial phase

 

  • Site Assessment: We start each bid build with a detailed site analysis, evaluating geological conditions, risks, and challenges, to create accurate specs and cost estimates from the outset.
  • Strategic Planning: Using our data-driven insights, we design customized stabilization solutions that maximize efficiency and reduce risks.
  • Transparent Approach: From first consultation to project completion, we keep clients informed with regular updates and clear, open dialogue.
  • Quality Results: We uphold the highest standards of safety, craftsmanship, and materials to deliver results built to last.
Shoreline Stabilization working in a river

Why Choose GSI

  • 9,000+ Projects Completed – The most experienced geohazard mitigation contractor in North America.

  • Multidisciplinary Team – In-house geologists, geotechnical engineers, drill operators, and rope-access specialists.

  • Emergency Response – Rapid emergency response across the U.S.

  • Design/Build/Warranty Model – One accountable partner from initial assessment to final sign-off.

  • Proven Safety Record – Industry-leading safety practices and training.

Safety-First Solutions

We're proud to be industry-recognized for exceeding safety Standards

 

  • We operate in high-risk environments with zero compromise on safety
  • Emergency response plans practiced on-site
  • Our teams undergo continuous safety trainings

Recipient of the ADSC and AGHP Safety Awards and are Gold Shovel Standard Certified

ADSC Safety AwardGeoHazard Professionals Safety Recognition Gold Shovel Standard

Construction crew in safety vests and hard hats gathered for a roadside safety briefing.

Client Reviews

Geohazard Mitigation for Transportation in the Mid-Atlantic

Hey Jennifer,

I just wanted to say how much I enjoyed working with you guys on [our project]. Under the circumstances with that big of a job, and traffic volume that was being detoured it was a little stressful, however you all were so easy to work with, it made my job easier! Just wanted to thank you and Ryan for keeping me informed weekly and sometimes daily. Sara did an amazing job with the drill pattern and the engineering side of things. Kyle is one of the best superintendents I have worked with, he is good to his guys and got a lot of work done due to his ability to plan ahead and coordinate. Great experience for me and I really enjoyed working with you all, looking forward to our next job sometime. Please let everyone on the crew know that I really appreciate all their hard work, pleasure meeting everyone!

THANK YOU!”

Geohazard Repair in Kentucky

GSI, thanks for another successful project. It is always nice to work with you and your field crews. We are currently experiencing flooding here in [this area], so I am sure we will be utilizing your services once again in the near future. The repair was “headache free” and that is very nice, to have a company and crew, come in do their job. You would be surprised how many contractors come in and are not as safety oriented and headache free as yours and for that reason, I am writing this email to let you know as a manager I appreciate the professionalism.

Professional Project Support in British Columbia, Canada

I am writing this email to let you know that we are honored to work with GSI and your subcontractors as you have all demonstrated professionalism since your very first involvement of the project. Everyone on the project team is highly experienced, efficient and motivated. We also appreciate your professional work and your prompt response to our inquires. We understand that it is a project and a project site with many unique challenges. Many thanks again!

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Contact Us Today

If you are interested in a no obligation site visit to determine if our services fit your geohazard mitigation needs, call us at 855.579.0536 or fill out our contact form.

855.579.0536

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    A spider excavator drills into a steep hillside above a lake under cloudy skies.

    Our Awards, Certifications, & Memberships

    ENR Regional Best Project 2023
    ADSC Safety Award
    GeoHazard Professionals Safety Recognition
    Gold Shovel Standard Certified
    GSI is a Directing Member of the Association of Geohazard Professionals
    GSI is a TOP 10 Military Friendly Employer