Pierre Shale — one of the most problematic slope materials in the Great Plains create persistent slope instability along corridors like US-16A, Needles Highway, and I-90. When slopes move, infrastructure fails — highways close, rail lines shift, and the cost of delayed action compounds.
Access Limited provides Pierre Shale landslide remediation and erosion control for SDDOT corridors engineered from site-specific investigation data.
Slope stabilization in South Dakota requires understanding that pierre shale — one of the most problematic slope materials in the great plains. Access Limited matches each site along US-16A, Needles Highway, and I-90 with the approach its failure mechanism demands — landslide remediation, soil nail walls, GCS® walls, erosion control, horizontal drains, embankment repair, or a combination.
When a slope has failed, Access Limited landslide stabilization identifies the failure surface and designs the intervention. 24/7 emergency response is available for active slides across South Dakota.
Soil nail walls reinforce unstable slopes using steel nails with shotcrete facing. The Soil Nail Launcher drives nails at rates far exceeding conventional drilling on SDDOT corridors.
GCS® walls provide slope stabilization through engineered lifts of geosynthetic-confined soil — suitable for heights and geometries where traditional concrete walls would be impractical in South Dakota.
Erosion control intercepts progressive material loss. Horizontal drains reduce the pore pressure that drives most South Dakota slope failures — designed from measured piezometric data at each site. UAS surveys provide terrain data that supports drain placement and erosion control design.
Soil Nail Launcher — Proprietary pneumatic nail installation at production rates that cut construction time on South Dakota corridors.
Spider Excavator Access — Reaching steep, unstable slopes where conventional equipment cannot operate.
Design-Build — In-house engineers design, Access Limited crews construct — one contract, one team.
Horizontal Drain Expertise — Pore water pressure reduction through measured piezometric data-driven drain arrays — the most effective single stabilization measure available.
See why SDDOT, NPS, and mining operators trust Access Limited for slope stabilization in South Dakota.
Access Limited provides Pierre Shale landslide remediation and erosion control for SDDOT corridors.
