Silver Bridge
For 39 years, a tiny hidden crack grew to a length of only 3 millimeters - but ultimately enough to trigger the 1967 collapse of the Silver Bridge, which connected West Virginia and Ohio. Here's an interesting video (with animation) that explains what happened.
The event is also linked to the area's infamous "Mothman" sightings, which led to this book and this movie.
The event is also linked to the area's infamous "Mothman" sightings, which led to this book and this movie.
