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Coast Stabilization Contractor

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Shoreline stabilization

Experts in Bluff & Shoreline Slope Stability

GeoStabilization International is the coast stabilization contractor of choice for challenging bluff and shoreline environments. For more than 20 years, our teams have delivered stabilization and excavation support across North America, helping contractors, DOTs, and developers protect infrastructure, property, and lives while maintaining schedule and budget control. Our corrosion-resistant systems, including launched fiberglass soil nails and SuperNail™, perform reliably in salt-spray and chloride-rich environments with minimal disturbance to sensitive coastlines.

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Why Choose GSI as Your Coast Stabilization Contractor

  • Low-Impact Access – Top-down construction, rope access, compact drills, and spider excavators minimize vegetation clearing, beach access needs, and shoreline disturbance.
  • Rapid Mobilization – Nationwide teams and specialized equipment enable quick response for storm-damaged or actively moving slopes.
  • Exclusive Technologies – Soil Nail Launcher™ and SuperNail™ systems stabilize collapsing soils and steep slopes where conventional methods cannot safely operate.
  • Cost and Schedule Certainty – Value-engineered designs reduce change orders, closures, and total installed cost while maintaining long-term performance.
  • Safety and Quality Management – Comprehensive safety programs, work-at-height procedures, and detailed verification testing meet or exceed industry standards.
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Our Capabilities

As a trusted coast stabilization contractor, GSI delivers design-build stabilization systems tailored for coastal and bluff environments:

  • Coastal and Bluff Stabilization – Launched fiberglass soil nails and SuperNail™ systems with wire mesh or shotcrete facings for durable performance in corrosive settings.
  • Erosion Control – Surface protection, targeted regrading, and localized armoring to limit raveling and washout.
  • Drainage and Pore-Pressure Relief – Weeps, subdrains, and perforated drains that manage groundwater and prevent slope saturation.
  • Limited-Access Construction – Rope-access and compact drilling from above the slope to avoid heavy excavation or haul roads.
  • Emergency Response – Rapid mobilization following storms, slides, or bluff undercutting that endangers structures or roads.
Coastal stabilization

How GSI Solves Coastal and Bluff Instability

 

Site Assessment & Modeling

Evaluate slope geometry, soil stratigraphy, and groundwater conditions to define stabilization needs.

Engineering and Design

Select fiberglass soil nails or SuperNail™ systems with appropriate lengths, spacing, drainage, and facing details.

Top-Down Installation

Launch nails from the slope crest, apply pressure grouting, and verify performance through testing.

Facings and Finishes

Install high-strength mesh or shotcrete with optional textured or architectural finishes for visual integration.

Verification and Turnover

Conduct testing, provide as-built documentation, and deliver maintenance recommendations for sustained performance.

Coastal wall

The GSI Advantage

  • Corrosion Resistance: Fiberglass and coated components ensure long-term capacity in coastal environments.
  • Faster Schedules: Top-down construction and rapid mobilization shorten project timelines.
  • Proven Experience: Thousands of successful stabilization projects completed nationwide.
  • Integrated Delivery: Design-build execution simplifies coordination and reduces project risk.

Client Reviews

Landslide Repair for Transportation Infrastructure in Oregon

GSI under commits and over delivers. Work is always completed ahead of time and on budget… [They are] competitive with more conventional slide repairs, but much more timely and minimizes impacts to traffic.

Slope Stabilization and Landslide Repair in Pennsylvania

[We have] worked with GeoStabilization International (GSI) for over 10 years. GSI is our “go to contractor” for difficult slope stabilization projects. We have worked with GSI to stabilize steep slopes and remediate landslides on numerous projects along highways, pipelines and railroad right-of-ways. We have found them to be an excellent partner and one of very few contractors capable of working in areas with remote/difficult access. Their experienced equipment operators are able to work efficiently under difficult and often hazardous conditions, and yet maintain the project schedule… [We have] recommended GSI to clients and subcontracted them sole source on … design-build projects. I have no reservations recommending GSI for geohazard mitigation type work on pipeline right-of-way or other projects requiring slope stabilization.

Slope Stabilization for Mining Operations in California

Your crew finished up yesterday afternoon, leaving our slope in good shape. They worked safely, were responsive and enthusiastic, and hard-working. I'd be happy to have any of these guys on a future project with [our company].

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Need to stabilize your coastline or bluff? GSI’s design-build specialists deliver durable, low-impact stabilization that protects property and infrastructure for decades.

Request a coast stabilization assessment or proposal today.

855.579.0536

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    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