Indiana's landslide exposure centers on the Ohio River bluffs in the southern counties, where interbedded limestone and shale along US-50 create a layered slope structure prone to bedding-plane failures — a mechanism distinct from the residual-soil slides more common elsewhere in the Midwest, and one INDOT's standard soil-slope repair specifications don't directly address.
It's a recurring example of the Steep Slope Stability Issues conditions INDOT and local owners manage statewide.
Because Indiana's Ohio River bluff failures often follow a specific shale bedding plane rather than a generalized soil failure surface, GSI's soil nail design targets that plane directly rather than applying a generic depth-based reinforcement pattern. This is one application of GSI's broader soil nailing expertise.
Groundwater moving along the same shale bedding planes that drive bluff failure is intercepted by horizontal drains positioned to target that specific water pathway, not just general slope seepage. GSI's Soil Nail Launcher™ experience informs this approach.
Interbedded limestone and shale produces inconsistent borehole conditions within a single slope — the Soil Nail Launcher™ installs reinforcement without depending on uniform rock conditions along the bore path. This draws directly on GSI's horizontal drains work.
GSI's landslide emergency response experience also informs how these Indiana projects are scoped from the start.
Engineered for Indiana's conditions. GSI identifies and targets the specific shale bedding plane driving Indiana's Ohio River bluff failures — a bedrock-controlled mechanism that generic soil-slope repair specifications don't address. Supported by general contractors and asset owners.
Design/build delivery. Engineering and field crews work as one team — preventing the disconnects between engineering and field execution.
INDOT specification compliance. Documentation and installation methods align with DOT standards beginning with initial documentation.
INDOT partners and Indiana infrastructure owners describe GSI's landslide repair results.
GSI's engineers are ready to assess landslide repair conditions at your Indiana site.
