bridge under construction fell apart, onto railroad, just before train needed to move through that area on Thursday evening (April 2nd, 2020) on the Rhine Valley railway line near Auggen and was largely derailed.

best humorous comment on Reddit was

"Fact is, there is no way to discern which path a train will take, so you really have to be watchful. If only there were some way of knowing the routes trains travel; maybe some sort of marks on the ground, like twin iron bars running along the paths trains take. You could look for trains when you encounter the iron bars on the ground, and avoid these sorts of collisions. But such a measure would be extremely expensive. And how would one enforce a rule keeping the trains on those paths?

https://www.reddit.com/r/ThatLookedExpensive/comments/fu5sjc/cargo_train_ran_into_bridge/
https://www.baden.fm/nachrichten/schweres-zugunglueck-bei-auggen-betonteil-auf-gleise-der-rheintalbahn-gestuerzt-626271/