Scientists Unveil Space-Based Tool to Predict Bridge Failures Early

Quick Smiles:

• University of Houston team uses satellites to detect tiny bridge shifts worldwide.
• New radar method identifies risks before disasters strike.
• Helps prioritize fixes, saving lives and costs globally.

A University of Houston scientist leads an international study of 744 bridges, combining radar and satellite imaging to calculate risks accurately.

This innovative approach reveals structural damage long before it happens, closing gaps in bridge monitoring.

Published in Nature Communications by lead author Pietro Milillo, the technique complements traditional inspections.

“We can significantly lower the number of bridges classified as high-risk, especially in regions where installing traditional sensors is too costly,” Milillo told University of Houston press.

Multi-Temporal Interferometric Synthetic Aperture Radar detects millimeter-scale displacements from time, decay, and nature.

North American bridges face challenges from age but benefit from professional inspections, while the method aids underserved areas.

Structural Health Monitoring sensors are limited, but satellites provide frequent, cost-effective checks everywhere.

“Remote sensing offers a complement to SHM sensors, can reduce maintenance costs, and can support visual inspections, particularly when direct access to a structure is challenging,” said Milillo.

“For bridges specifically, MT-InSAR allows for more frequent deformation measurements across the entire infrastructure network, unlike traditional inspections, which typically occur only a few times per year and require personnel on the ground.”

Share this uplifting breakthrough in protecting our bridges for a safer world!

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