Johnson's 'bonkers' plan for £15bn bridge derided by engineers

Experts says PM's proposal for bridge between Scotland and Northern Ireland fraught with problems

Engineering experts have poured cold water over Boris Johnson's "bonkers" plan to build a bridge between Scotland and Northern Ireland for 15bn.

The prime minister - who first touted the idea of the 20-mile-plus bridge last year - put a price on his proposal for the first time last week, saying it would "only" cost the multibillion pound sum.