I-74 Mississippi River Bridge
- Location Illinois
MethodsDrilled shafts, steel casing, marine construction
Michels installed 242 drilled shafts to support the piers for the new bridge. The installation of the drilled shafts was completed with the simultaneous use of up to four drill rigs. Utilizing barges, 233 drilled shafts were installed in the river. Michels crews also installed 7-foot and 10-foot permanent steel casing into bedrock for each shaft.