Peter Masson wrote:
"R.C. Payne" wrote in message
...

If you allow reused infrastructure from older transport forms
incorporated into new ones, then the Higham and Strood tunnels must
count, as they were dug for the Thames & Medway canal in 17xx.


1819-24
Peter

Are they really that new? I had always assumed they were older than
that, but a quick google confirms these dates.

Robin