|However, John Rennie's bridge was not to
survive as long as Peter de Colechurch's and plans were afoot
in the 1960's to replace the structure by a modern bridge. The
old bridge had sunk twelve inches at the southern end even on
completion and had continued to sink unevenly by an inch in
every eight years thereafter and could no longer cope with the
extent of modern traffic.
||Over in Arizona, USA, Robert McCulloch learned
that the British Government was putting the bridge up for sale.
He put in the winning bid for $2,460,000 and plans were drawn
up to move and rebuild the bridge in Lake Havasu City, Arizona.
|Each piece was marked with four numbers.
The first indicated which span, the second noted which row of
stones, and the last two numbers indicated which position in
that row. It was discovered, while dismantling the bridge, that
there were code numbers on each stone when it was originally
built: Rennie must have used the same system when the sections
left the quarries.