Excavation contractors in Forest County, WI

Northern Wisconsin is the sand-and-clay lake country: glacial outwash and pitted outwash across the northwoods, heavy red lacustrine clays around Lake Superior, and Precambrian bedrock in the Penokee range. The northwoods profile cuts fast in loamy sand but collapses readily, so trench shoring is routine; hydric soils and wetlands run 20-40 percent of most counties, and the Oneida-Vilas-Florence chain carries shallow crystalline bedrock (within 50 inches on 15-40 percent of land) with stony, bouldery glacial drift that complicates trenching. Around Lake Superior and Green Bay, the red clay plain (Douglas, Bayfield, Ashland, Oconto, Marinette) brings the classic lake-clay problems: wet, sticky, slow-draining silty clay with high seasonal water, frost-susceptible subgrade, and shallow seasonal flooding. The Door-area dolomite ridges reach into the northern counties only sparsely. Shrink-swell is negligible statewide; frost is 42 inches.