The total length of London Bridge is 269 metres (860 feet) and the longest span is 104 metres (340 feet). These are the measurements for the bridge in London, England, not the one in Arizona.
Span 57
1223 metres
The old (1830) London Bridge is now in Lake Havasu City, Arizona.
span bridge
A bridge's span is the length that crosses the gap.
The span is the distance between supports. The sum of the span lengths is the bridge length.
I think you probably mean "bridge span" rather than "spam bridge." A bridge span is the part of the bridge between its supports.
Because the original bridge was the ONLY bridge in London at that time.
its the span of a bridge for which the cost of building both substructure and superstructure is same....
A span of gap is something in a gas leak or under a bridge that smokes.
Tower Bridge and London Bridge.
the span