Examining the Time-Dependent Behavior of the I-35W St. Anthony Falls Bridge for Long-Term Monitoring

Monday, September 29, 2014 - 3:00pm

About the Event

A better understanding of the time-dependent behavior of post-tensioned concrete structures is critical for developing long-term maintenance strategies. This presentation discussed how researchers are using data from a monitoring system on the I-35W St. Anthony Falls Bridge to investigate such time-dependent behavior.

The project included monitoring nearly 500 sensors installed during construction of the bridge for strain, load distribution, vibrations, temperature, and the overall movement of the bridge. Using the collected data, the researchers also developed models to better predict the behavior of the bridge over time. Going forward, this data can be used as a baseline for detecting damage or potential problems in the structure.


Cathy French is a CSE Distinguished Professor with the Department of Civil, Environmental, and Geo-Engineering. Her research interests are related to the behavior of reinforced and prestressed concrete structural systems. She is interested in the durability and application of new materials to the infrastructure, and the effects of earthquakes on structural systems.

Carol Shield is a professor with the Department of Civil, Environmental, and Geo-Engineering. Her primary research interests are in the use of composite materials in the infrastructure, modeling, and experimental investigation of the behavior of prestressed concrete structures, and methods of seismic simulation.