Jan then Ian wrote:
> > You'd still have to flood that bridge with an entire meter of
> > water for it to fail!
>
> It would only have to be 1m of snow or 10cm of water, which might
> conceivably happen, esp if the bridge had sides.
When these bridges were built there was no way of removing snow from the
roads. They packed it down with a team of horses pulling a heavy
roller! By spring there was a season's worth of compressed snow and ice
underfoot.
When snowplows came along in the early part of the last century,
suddenly the rural folks in winter had the best roads yet: smooth (no
ruts) and hard ("mud season" lasted 2 months and whenever it rained) It
gave them a feel for paved roads, which they started asking for.
Morgan Sparks
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