In today's episode, we bring to a close our three-part series on the collapse of a pedestrian bridge in Miami, Florida, in 2018.

In part one, you heard about the cracks in the bridge and how nothing was done about them. And in part two, you heard about the serious errors that were made in the bridge's design.

In this episode, we take a deep dive into two unanswered questions from this failure: just why did everyone ignore the cracks in the bridge; and why did a rigorous checking process not identify the errors in the bridge's design?

This show is produced in collaboration with Wavelength Creative. Visit wavelengthcreative.com for more information.