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Researchers Develop Cost-Effective Rehab Method to Extend Life of Double-Tee Bridges

Posted: Nov 1, 2019

Researchers at South Dakota State University developed two rehabilitation methods for girder-to-girder joints on double-tee bridges. One of the methods, which costs 70% less than bridge superstructure replacement, will extend the service life and eliminate the need for replacement of many existing double-tee girders and bridges. Double-tee bridges are among the most common bridges on local roads in South Dakota. Unfortunately, longitudinal joints on these bridges often rapidly deteriorate. The rehabilitation methods developed in this MPC research offer a cost-effective, feasible and structurally viable method for upgrading existing double-tee bridges without replacing the girders.

Mostafa Tazarv, Ph.D.
South Dakota State University

Rehabilitation of Longitudinal Joints in Double-Tee Girder Bridges

NDSU Dept 2880P.O. Box 6050Fargo, ND 58108-6050