Bridge Pile Repair Using Underwater FRP Sleeve and Steel Reinforced Grout Status: CompleteProject Start Date: 05/06/2022 Summary: Structural repairs to a bridge that has supportive elements in a river, lake or other body of water can mean high costs and substantial disruption to the environment and area traffic. To remove the water and prepare the site for repairs, engineers would typically build a temporary wall and run pumps to keep the area dry for the duration of the project. The bridge’s deck might also be removed for easier access, and boat and vehicle traffic might be rerouted until the work is completed. In recent years, innovative construction materials and methods have been developed to offer a potentially faster and easier solution for repairing a bridge’s piles without removing the surrounding water. After learning of other states’ successes with these proprietary bridge pile repair systems, MnDOT and LRRB partnered on a demonstration project in Minnesota to compare two vendors’ systems on a bridge near St. Cloud. Both systems provided viable results, giving engineers in the state a new option to consider when repairing in-water bridge supports. Final Deliverables: Related Materials: Related Research:
