Heathrow Plans Runway Over M25 In 30-Year Expansion
The title of this post, is the same as that of an article in Saturday’s copy of The Times.
This picture, which I downloaded from this page on the Heathrow web site, shows the proposed expansion.
For comparison this Google Map shows the Airport recently.
These are some of my thoughts.
The Position Of The Third Runway
As can be seen, the new third runway is to the North-West of the North Runway.
- It will extend all the way to the M25.
- The M25 will be lowered and the new runway and two parallel taxiways will cross the road on a series of bridges.
This enlargement from the first image shows the crossing of the M25 and two other roads.
Note.
- The runway is on the left, which increases the spacing with the North Runway
- How openings between the runway and the taxiways will allow natural light onto the motorway.
- In the picture you can see five angled taxiways joining the runway from the two taxiways. Does this design mean that aircraft spend a minimum of time queuing for take-off? Similar but not so extreme layouts can also be seen on the two existing runways.
What intrigues me, is what looks to be a hole in front of the ends of the taxiways.
Could it be rail or road access to the airport?
This map from Network Rail shows the route of the proposed Western Rail Approach To Heathrow.
It looks like the dark holes could be the railway, between Langley and Terminal 5.
This section of the rail link is supposed to be in tunnel, but I wonder if costs could be saved if it is in a buttressed cutting, designed in cooperation between Heathrow and Network Rail.
Obviously, it will need to be in tunnel to cross under the M25.
I think that rather cleverly, the runway has been slotted in with the best use of the limited land available.
A Phased Construction Program
The Times says this about the construction program.
Only the runway would be built by the opening date of early 2026.
Other facilities such as new terminals, car parks, hotels and transit systems would open from 2030, with an expansion of Terminal 5 the priority
This means that the extra runway capacity can be used initially to better accommodate the same number of flights.
If Heathrow get it right passengers. should see the following.
- They would suffer less from construction.
- Fewer taxi delays on the ground.
- Less long fuel-burning taxiing between gate and runway.
- More flights leaving on time.
It might also enable air traffic controllers to allocate aircraft noise in a fairer manner.
Car Psrking
Two huge new car parks are to be built North and South of the Airport, which in conjunction with new hotels would be connected to the terminals by an underground transit system.
This article on International Airport Review is entitled Heathrow To Launch First Airport Ultra Low Emission Zone.
So doesn’t the building of large car parks contradict this policy.
It would unless, the car parks are designed for the future.
- Electric cars only.
- Intelligent chargers for every parking space.
- Whilst the cars are parked and connected, they would be a massive energy storage battery for the National Grid.
When you arrived back to your car after a week in Greece, there would be enough power in the battery for your next journey.
By 2030, there will be a substantial need for parking for electric cars at railway stations and airports. Parking solutions like this will help reduce the carbon footprint of airports.
Conclusion
2030 is ten years away and Heathrow will have to work hard to build an airport fit for those times.
The M25 is a nightmare much of the time. I have long phone conversations with my daughter while she is stuck on M25, A2 etc. She lives in North Kent – don’t know if she had seen this but I can imagine her face when she does.
Comment by Liz Parkinson | June 16, 2019 |