Happy Valentine's Day

Last year on the way to the Katherine Dunham Museum in East St Louis.
Call to see if the museum is still open for touring during Black History MOnth and covi :/

Galloping Gertie

Click on the title.

I asked Bad Tim what went wrong:
Modernists were jumping all over each other to create a sleeker, more streamlined suspension bridge, and this one was the absolute masterpiece. Unfortunately, they neglected to account for the heavy winds thru the narrows and didn't realize that they would create a resonance in the span. it was like striking a tuning fork. Once the vibration got started, the wind kept feeding it until it started swaying like that.

This is why suspension bridges are often double-deckers or have deep, open trusses under their decks. It makes the deck stiffer so it won't oscillate a lot of them also use grates for the deck instead of concrete, so the wind can blow thru without setting off the wave action.

It was a gorgeous bridge, though, wasn't it? It's tragic about the dog.