I-35W Bridge Collapse, Wow

I first knew something was amiss when all phone circuits were busy as I tried to call my mom.

I have no idea how many times I’ve driven across that bridge.

Roads in northern cities suffer extremes. Bitter cold in the winter, scorching heat in summer, expanding and contracting over and over every day. Water seeps in and freezes, heaving the road, widening the cracks. Bridges add water underneath, rusting and corroding. Because they are open underneath they freeze faster and become hazardous, so they are the first to be deiced, often with salt which furthers the corrosion. As with any bridge the load rests on just a few points, vulnerable to washouts and collisions at the very least.

Hopefully we can learn what caused this so it never happens again.