The new Highway 63 Bridge project replaces the old Eisenhower Bridge that had been deemed "Fracture Critical". The new river crossing section of the bridge includes two large river piers supported on 9' and 10' diameter drilled shafts bearing up to 14 feet into bedrock and 90 feet below river elevation. Pier 1 is located on the Minnesota side and accessed via a small access road alongside an active railroad track and Pier 2 is located on the Wisconsin side and was drilled from a barge. The case study details the mass concrete performance, self-consolidating concrete (SCC) mix performance, concrete placement techniques, thermal modeling, thermal integrity results (TIP) and challenges associated with the access and construction of the foundations for the new bridge
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