North Dakota's landslide exposure concentrates in the Badlands' banded sedimentary formations and the Missouri River bluffs, where I-94's western reaches cross slopes built on interbedded clay, lignite, and sandstone units of dramatically different strength — a stratigraphy that produces complex, layered failure surfaces NDDOT's standard maintenance approach hasn't fully resolved.
GSI treats this as one of several Steep Slope Stability Issues issues the state's infrastructure owners regularly face.
GSI's soil nail pattern for North Dakota's Badlands slopes is designed around the specific interbedded clay and lignite layers driving failure, rather than a uniform reinforcement pattern that ignores this layered stratigraphy. This draws directly on GSI's soil nailing work.
Groundwater perched on low-permeability clay interbeds within North Dakota's Badlands stratigraphy is intercepted by horizontal drains positioned at the specific interface driving instability. GSI's Soil Nail Launcher™ capability supports this step.
North Dakota's soft lignite and clay interbeds are prone to borehole collapse during conventional drilling — the Soil Nail Launcher™ installs without needing these weak layers to hold an open hole. This is one application of GSI's broader horizontal drains expertise.
GSI often considers landslide emergency response alongside this work when scoping North Dakota projects.
Engineered for North Dakota's conditions. GSI targets the specific weak clay and lignite interbeds within North Dakota's Badlands stratigraphy — not a generic reinforcement pattern applied uniformly regardless of layer strength. GSI's general contractors and asset owners experience backs this approach.
Design/build delivery. The same organization designs and installs — preventing the disconnects between engineering and field execution.
NDDOT specification compliance. Project documentation and field methods comply with state DOT standards beginning with initial documentation.
NDDOT partners and North Dakota infrastructure owners describe GSI's landslide repair results.
GSI's engineers are ready to assess landslide repair conditions at your North Dakota site.
