"M. H. Greaves" wrote in message
...
being no expert at all, i would say after reading a little of the history
about the bridge, they built it to get arms and equipment across to the
west
quickly, either during or before the first war and after its demolition
and
the war, it probably wasnt needed anymore, but i think also there may be a
little national humiliation involved!

If it was a matter of national humiliation they would scarcely
have built a museum there. Its simply no longer required.

Keith