Putting Heathrow runway over M25 will be ‘cheaper and quicker’ Transport Secretary Chris Grayling says

The plan is for the runway to span the 12-lane highway

The Transport Secretary has defended the Government’s plan for Heathrow’s new runway to span the M25 using a ramp, arguing that the solution will be “cheaper and quicker” than alternatives.

Chris Grayling said that the new runway had to be “affordable for passengers” and that the ramp over the 12-lane motorway would only be a “gentle slope”.

Ministers yesterday gave their backing for the new runway, the design of which suggests using an 8m ramp to span Britain’s widest motorway at its widest point.

Mr Grayling said the proposal was “sensible”, seeking to assuage safety and security concerns of having sensitive infrastructure just metres in the air over a busy road.

“We’ve been very clear not just to [Heathrow] but to the other promoters of the schemes is that what they do has to be affordable for passengers as well. It’s not simply about landing extra costs on the shoulders of passengers,” Mr Grayling told BBC Radio 4’s Today programme

“One of the things that Heathrow has been looking at is doing what many airports have done around the world and building their runway over the top of the road rather than tunnelling the road underneath it.

“It’s a cheaper and quicker way of doing it and I’m of course very concerned to make sure that whilst this runway is built it doesn’t cause massive disruption on the M25.

Chris Grayling, the Transport Secretary (PA)

“I think this is a sensible way, it’s a gentle slope. It’s a hill, a very gentle hill upwards that the planes would take off rather than a flat service and it’s what happens at very many other airports around the world.”

Other proposals considered include putting the M25 into a tunnel, building the runway at a different alignment, or building it elsewhere.

MPs will vote on the new runway in 2017-18 following a public consultation.

The third runway is expected to be operational not before 2025, with construction slated for 2020-2021, barring any further roadblocks.