110- Structural Integrity (Rebroadcast)

99% Invisible is honored to accept a 2015 Third Coast International Audio Festival award for Structural Integrity, a story of architectural engineering gone wrong, and then covertly made right. When it was built in 1977, the 59-story CitiCorp Center had a potentially fatal flaw that could have caused the building to collapse during a sever storm, and take out the entire Midtown Manhattan skyline with it. This flaw (and the plan to fix it) was so secret, that even the person who found the problem only discovered the full story decades later.