The subsurface layers of gravelly alluvium in Rockbridge soils are thin and disappear as the old terraces merge with marginal areas of bedrock-controlled uplands. The latter areas are dominated by Gale soils and Dubuque soils. Medium or rapid runoff. Moderate permeability in the loess and moderately slow in the clay pedisediments. Principally used for general farm crops including corn, small grain, and forages.
Steeper areas are in woodlots or are used for pasture.
Native vegetation was mixed hardwoods, mostly oaks. Rockbridge soils are inextensive. St. Paul, Minnesota. Richland County, Wisconsin, 1947. The Rockbridge series was classified as Gray Brown Podzolic soils in recently published soil surveys.