This super strong concrete could repair aging bridges. Here's what's standing in the way

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.
Stream your PBS favorites with the PBS app: to.pbs.org/2Jb8twG
Find more from PBS NewsHour at www.pbs.org/newshour
Subscribe to our CZcams channel: bit.ly/2HfsCD6
Follow us:
Facebook: www.pbs.org/newshour
Twitter: / newshour
Instagram: / newshour
Snapchat: @pbsnews
Subscribe:
PBS NewsHour podcasts: www.pbs.org/newshour/podcasts
Newsletters: www.pbs.org/newshour/subscribe