Magdeburg Water Bridge

I had never heard of the Magdeburg Water Bridge until now!  (As others have noted, this is actually a bridge to allow a canal to pass over a river, not a river over another river.)

The Magdeburg Water Bridge provides a bridge for a river over another river. Engineering! pic.twitter.com/EoaznXk0QR

— Tyler Hayes 🦾 (@thetylerhayes) February 23, 2023