The Mississippi River bluffs erode from sustained river current, while Lake Superior's North Shore erodes from wave action, two unrelated water sources that both demand attention from MnDOT.
Minnesota's Mississippi River bluffs and Lake Superior's North Shore both face erosion, though from different water sources, river current along the Mississippi corridor and lake wave action along the North Shore. The state's extreme freeze-thaw range, among the widest of any state in this program, compounds both erosion zones and separately destabilizes glacial till slopes statewide.
It's one of several Seepage and Internal Erosion Problems conditions showing up on MnDOT corridors statewide.
Across erosion control, slope instability, retaining systems, GSI tailors its Minnesota response to the terrain and climate that actually drive the risk.
Across Minnesota, Mississippi River current and Lake Superior wave action causes this. GSI treats it with coastal and bluff stabilization.
This stems from glacial till slopes fractured by extreme freeze-thaw cycling in Minnesota. GSI's fix is soil nailing.
river bluff and North Shore erosion undermining highway slopes is the driver here. GSI addresses it in Minnesota through tiebacks.
The Mississippi River bluffs erode from sustained river current, while Lake Superior's North Shore erodes from wave action, two unrelated water sources that both demand attention from MnDOT.
Minnesota experiences some of the widest annual temperature swings of any state in this program, intensifying both erosion damage and glacial till slope instability beyond what milder climates produce.
Glacial till slopes statewide can fail as extreme freeze-thaw cycling progressively fractures the material, a risk distinct from but related to the state's erosion challenges.
Yes, particularly where river bluff or North Shore erosion has undermined highway-adjacent slopes enough to require structural retention.
GSI maintains emergency response for Minnesota's Mississippi River corridor and seasonal flooding events.
GSI specifies hardware and materials rated for Minnesota's full temperature range, from deep winter cold to summer heat, rather than a standard-climate specification.
Corridors prone to washouts and scour often need updated warning signage alongside the structural repair. RoadGuard installs highway signage and sign structures built to the same standards as the roadway itself.
From erosion control to retaining systems, GSI's engineers are ready to assess your Minnesota site.
