PBS NewsHour

U.S. needs safer bridges. Super strong concrete could help

Clip: 02/12/2020 | 5m 26s | Video has closed captioning.

There's a dire need to repair aging infrastructure in the U.S., and an innovative building material could be a game changer. Embedded with steel fibers, ultra-high performance concrete is about five to 10 times stronger than standard concrete -- and unaffordable for most government-funded projects. Special correspondent Cat Wise reports from Iowa on how researchers are working to bring costs down.