Controversial £1.8m plans put forward to improve traffic flow at Bisham roundabout have been scrapped following intervention from Theresa May.
In a letter to the Maidenhead MP, project director David Brewer has confirmed the Highways Agency (HA) will 'not be taking forward' the designs which would have adapted the roundabout on the A404 to include widening the northbound and Marlow Road approaches.
It was also proposed that a dedicated left-turn for Bisham be built.
The plans were drafted in conjunction with the Royal Borough and announced in April.
Mr Brewer's letter, written on Friday, states the HA's decision to step back is due to 'the complexity of issues raised.'
He has also stated the need for further work and consultation with residents before an alternative is drafted.
David Brewer refers to the 'sentiments' of Bisham Road resident Mike Post in his correspondence who, along with fellow villager Philip Kersey, alerted the Home Secretary to the fundamental problems with the scheme.
Ms May then wrote to the HA herself and grateful Mike Post is convinced her intervention was the decisive factor in blocking the plans.
The 69-year-old also contacted the HA directly and said he remains baffled at how it generated such a flawed set of plans.
"Everyone agrees how stupid it is. We are not highways engineers," he said.
"We should be able to rely on experts."
Mike, who is affected by tailbacks of roundabout traffic outside his house, has suggested part-time traffic lights and later an overpass as a more effective solution.
A Highways Agency spokesman said: "We recognise the scheme proposed would not provide the benefits we expected.
"We are reviewing the scheme and will work closely with the Royal Borough of Windsor and Maidenhead to develop alternative proposals."
This is the second time the Highways Agency has gone back to the drawing board.
Proposals for the roundabout to become a signalled crossroad, at a cost of £4.2m, were parked in January.
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