Construction — cost effective roads

Smart concrete could pave the way for high-tech, cost-effective roads The Golden Gate Bridge in San Francisco averages more than 100,000 vehicles daily. Photo by Saketh Garuda for Unsplash Luna Lu, Purdue University and Vishal Saravade, Purdue University Every day, Americans travel on roads, bridges and highways without considering the safety or reliability of these structures. Yet much of the transportation infrastructure in the U.S. is outdated, deteriorating and badly in need of repair. Of the 614,387 bridges in the U.S., for example, 39% are older than their designed lifetimes, while nearly 10% are structurally deficient, meaning they could begin...