I understand this is the first of maybe 11 to be constructed on this dangerous road to slow the traffic and give better access on and off.
It was built in less than 3 weeks on a (the) major trunk road here. Disruption was minimal with a few tailbacks this last week for the unavoidable stuff.
In Harlow, Essex, they have recently finished a minor remodeling of a roundabout on the A414, a reasonably busy road and it took 15 months with a lot of disruption.
So much for Manana. It seems the Brits could learn something about getting on with a job!