[Tagging] Ford and other river crossing : (was : waterway=wadi problem)

[John Willis]

> 
> Is a bridge in flood usable? I think not.

This discussion is about rare, special bridges that are used for such a purpose. They are usually in places that flood where emergency access is still required, or they are the only means of accessing an otherwise inaccessible area. 

Normally, when the water reaches the top of the support pylons and begins contacting the bridge itself are considered unsafe and the bridge could possibly fail, so this isn't a discussion about almost all bridges in the world. 

Javbw