Landslide Repair in Minnesota

Landslide Repair in Minnesota

Engineered landslide repair across Minnesota—I-35. Design/build solutions for MnDOT corridors and critical infrastructure.

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Failed slope by river requiring shoreline stabilization

Landslide Repair Across Minnesota

Minnesota's landslide risk concentrates along the Mississippi and Minnesota River bluffs and Lake Superior's North Shore, where extreme freeze-thaw cycling — Minnesota sees some of the widest annual temperature swings of any state in this program — progressively fractures till and shale into a loosened mass that MnDOT's river-bluff corridors experience as recurring, worsening slope movement.

GSI sees this alongside other Steep Slope Stability Issues work across the state's infrastructure network.

Geohazard Mitigation in Minnesota

Landslide Repair in MN?

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How GSI Delivers Landslide Repair in Minnesota

Soil Nail Wall Reinforcement

GSI's soil nail walls for Minnesota's river bluffs are designed around the state's extreme freeze-thaw range, using corrosion and fatigue-rated hardware suited to temperature swings from -30°F to over 100°F annually. GSI's soil nailing experience informs this approach.

Deep Drainage Systems

Spring snowmelt infiltration into freeze-thaw-fractured till drives most Minnesota bluff reactivation — horizontal drains intercept that seasonal pulse specifically, rather than managing groundwater at a constant assumed rate. This draws directly on GSI's Soil Nail Launcher™ work.

Launcher Technology for Difficult Soils

Till that has been fractured by Minnesota's extreme freeze-thaw cycling often cannot hold a conventional borehole open through installation — the Soil Nail Launcher™ avoids that dependency entirely. GSI's horizontal drains capability supports this step.

Where relevant, landslide emergency response is factored into the Minnesota project plan from day one.

Minnesota Landslide Repair Process

GSI follows a systematic five-step process to deliver landslide repair solutions in MnDOT corridors and beyond.

Step 1

Site Assessment

GSI engineers evaluate conditions and severity at your Minnesota site.

Step 2

Root Cause Investigation

In-house geologists investigate the specific conditions driving the issue, referencing Minnesota's North Shore volcanic basalt and Prairie du Chien dolomite bluffs.

Step 3

Engineered Solution Design

Custom design matched to Minnesota's site-specific geology, hydrology, and infrastructure loading.

Step 4

Design/Build Execution

One team executes the engineered solution under a single MnDOT-ready contract.

Warranty

Design/build/warranty coverage on every landslide repair solution installed in Minnesota.

Warranty

Design/build/warranty coverage on every landslide repair solution installed in Minnesota.

Rows of soil nails installed on highway cut slope, Minnesota DOT

Why Minnesota Trusts GSI for Landslide Repair

Engineered for Minnesota's conditions. GSI engineers Minnesota slope repairs for the state's extreme freeze-thaw range — hardware and sequencing suited to temperature swings most other states' slopes never experience. This is reinforced by GSI's work in general contractors and asset owners.

Design/build delivery. The same organization designs and installs — avoiding the miscommunication between separate design and build firms.

MnDOT specification compliance. Project documentation and field methods comply with state DOT standards beginning with the first engineering package.

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Minnesota Clients Report on Landslide Repair

MnDOT partners and Minnesota infrastructure owners describe GSI's landslide repair results.

Landslide Repair for Homeowner in Colorado

I would like this to be a letter of appreciation and gratitude on a job well done. Our house was first threatened by a landslide back in June, 2017 and it has been a journey that has been both stressful and scary. And yet, every cloud has a silver lining and in this case the support, encouragement and character of everyone we met from GSI has indeed been a gift throughout this journey.

GSI was recommended by Steve Pawlak and we met Nathan Thompson early on. Nathan is a person who inspires trust and our first impression was verified throughout the process that led to a retaining system that has saved our house. As with everyone, and I mean everyone we met, we felt we had a group of people who were on our side.

There were challenges that were overcome; the patience needed along with several visits to get the project underway, a renegotiated plan and bid when the insurance settlement squeezed the payment amount, and a time crunch that led to a change in plans where the panels were poured on the hillside, that allowed for the project to be started as quickly as possible.

The crew that showed up to do the work was respectful, always ready to explain what was happening and was also timely, hard working and ready to go the extra mile. A great group of people with positive attitudes who seemed to genuinely work well together.

Watching Spike work on that excavator was awe inspiring. One of my favorite moments was filming him on my phone to show my office secretaries at the Elementary School. I recorded a "holy shit" without knowing it when he pulled off an amazing stunt coming off a ledge and then being horrified when that came out while I was sharing the video at school. I was able to laugh later.

Thank you again and if I can ever serve as a reference, please let me know.

Erosion Control for Water Infrastructure in Minnesota

I am sending this to you from Duluth Minnesota where 4 of your employees just finished working on a wall they had put in for us previously. That was a few years ago after Duluth suffered a flood. We are on Lake Superior and St. Louis County wanted to help stop erosion. The guys worked during the rain and just kept on going, like little Energizer bunnies. Nice fellows, all of them!! They are certainly a credit to your company and I feel it is always good to give thanks to people for a job well done. Please let them know how much we appreciated their dedication to get the job done. We will always wish you and your team good days ahead!!

Emergency Landslide Repair in Wyoming

In 2017, another well above normal snowpack winter and heavy spring rains resulted in 23 new landslides, which damaged or threatened WYDOT roads. WYDOT turned to GSI to help respond to these emergency situations. GSI was able to respond very quickly and in most cases had personnel on site to assess the site within 24 hours. They would provide a proposal for remediation with a preliminary design and estimated costs within 48 hours in most cases. During 2017, GSI was selected to perform remediation with contracts at six separate sites. In all cases, they were prepared to mobilize to the sites and begin work within a week of being given notice to proceed.

A unique element of these emergency contracts was a partnership, between WYDOT and GSI, by which WYDOT provided some logistical support such as traffic control and providing water for drilling operations so that GSI could focus its efforts on performing the specialty work. This arrangement resulted in cost effective, efficient, successful projects. When responding to emergency landslide repair, time truly is money, the sooner a landslide can be remediated before it has a chance to grow, the less expensive it is to repair. In the past, WYDOT has experienced situations in which, landslides could possibly have been remediated quicker, experienced further failure during drawn out conventional design and contracting methods resulting in higher costs due to the additional failure. GSI uses various types of innovative geo-technology in their landslide remediation projects….

All of these projects were completed on schedule, even with cold weather conditions and snow storms ….

All of the stabilization projects that GSI completed for WYDOT included a warranty to repair any of the remediation that would happen to fail, but to date none of the work that they have performed has required any repair. I would highly recommend GeoStabilization International to perform emergency landslide and slope remediation work. They have the resources, personnel, and expertise to respond to your emergency in a timely, professional manner.

Landslide Repair in Minnesota

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