With almost half of federal highways and major roads in the U.S. classified below "good condition," the country is in need of serious transportation innovation.

Senior Sustainability Scientists Narayanan Neithalath, Timothy James and Kamil Kaloush are exploring how to improve the nation's transportation infrastructure by creating safer, less expensive, and more environmentally-friendly and durable structures.

A few of their techniques? Integrating innovative materials such as recycled tires and longer-lasting concrete, and building sensors to monitor structural safety.

According to Neithalath, "We can use less resources, we can make bridges last longer and we can make them less risky. Sustainability is a collaboration of all these different things.”