On: Italy bridge: Genoa motorway collapse kills at lea...

[rootusrootus]

I recall that we always had to break stride when marching across bridges, but I also recall that this has long been debunked, a properly designed bridge is in no danger at all from people marching across it in step.

[seanmcdirmid → rootusrootus]

There was that British bridge, but it was suspension:

https://en.m.wikipedia.org/wiki/Broughton_Suspension_Bridge

It is easy to see how a suspension bridge would resonate fairly easily. Also see the Tacoma Narrows bridge.