"Clive D. W. Feather" wrote in message
...
In article , Richard J.
writes
if you are talking in the country then i Believe causey arch is the
oldest surviving "raiL" bridge in the world
But surely it's not "still performing the service for which it was
built", i.e. as a railway bridge?

The arch might not be, but much of the embankment that the Tansfield (?)
Railway runs on is artificial construction from the same period, and still
performing the service of "railway embankment".

Tanfield. And yes, they do claim to be the oldest 'operating' railway in the
world