Willow Creek Paving Stones is a family-owned business, and we are proud of our reputation as a reliable supplier of consisten ... tly durable and beautiful hardscaping products. Using the highest quality aggregates and materials in Minnesota, we manufacture interlocking concrete pavers that can withstand the most extreme freeze-thaw cycles in the Midwest, exceeding even the strictest ASTM specifications, including: • ASTM C936 Solid Concrete Interlocking Paving Units • ASTM C1645 Freeze-Thaw and De-icing Salt Durability of Solid Interlocking Paving Units Our state-of-the-art facilities in Kimball and Faribault, Minn., keep our products readily available in an eight-state distributor network, meeting the highest performance standards and aesthetic demands of homeowners, landscape professionals, architects and engineers alike throughout Iowa, Minnesota, Montana, Nebraska, North Dakota, South Dakota, western Wisconsin and Wyoming. read more