(NPR) The collapse of a bridge earlier this week in Tennessee is raising new alarms about the delicate state of infrastructure across the U.S.
Tennessee Department of Transportation engineers say that a concrete overpass spanning an interstate highway in Chattanooga fell when a truck carrying an oversize load hit the bottom of the bridge and sliced through steel beams underneath. One person driving underneath the bridge was injured, police say.
The accident is renewing concerns about the deterioration of bridges across the country. According to a new report from the American Road and Transportation Builders Association, more than 47,000 bridges in the U.S. are in poor condition and in need of urgent repairs. The organization, which analyzes data from the Federal Highway Administration and releases an annual report on bridges, estimates it will take more than 80 years to fix all of the nation's deficient bridges.
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