The Big Dig in Boston was a massive infrastructure build that would take a freeway that was blight on the city and put it underground, but a tragic accident raises concerns about its safety. A new bridge in Wales collapses before it is even completed, is it an issue with design or construction? A dam in Spain collapses, devastating a region. A Milwaukee bridge begins to sag and debris is seen falling from it without any warning.

TVmaze todavía no tiene resumen de este episodio.

TVmaze todavía no tiene resumen de este episodio.