Mum receives the Xrefer brainteaser via feed from Peter Scott's library blog - so from time to time we research those questions she can't answer.
Like today:
Based on the example of the Forth Bridge (or Forth Rail Bridge, or Firth of Forth Bridge) (specifically from the answer it is meant the rail rather than the road bridge), a bridge that consists of two outer spans that project towards one another and support a suspended central span is a cantilever bridge.
Reading along the way that there is apparently a colloquial expression " Painting the Forth Bridge" referring to a never-ending task, we were reminded of Sisyphus, one of the characters we met in the underworld through a library book of Greek myths borrowed on a tangent from curiosity about minotaurs.
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