London underground roads plan unveiled

A13 Baring A new mini-tunnel for the A13 would free up land for future development the mayor said

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The mayor of London has announced plans to redesign some of London's busiest roads by having stretches of them go through tunnels.

Boris Johnson said work could begin at five locations which would allow the land the road was on, to be developed.

The roads are the A4 in Hammersmith, the A13 in Barking Riverside, the A3 in Tolworth, the A316 at Chalkers Corner and the A406 in New Southgate.

But the mayor said tolls could be used to help pay for the work.

He made the announcement during his trip to the US.

Boris Johnson in Boston Boris Johnson is on a six day visit to the US
A3 Tolworth The A3 at Tolworth would be built over
The fly-under proposal for the A4 in Hammersmith A 'fly-under' at the A4 in Hammersmith will replace the existing viaduct

Mr Johnson began his six-day visit with a walkabout in sub-zero temperatures around Boston's "big dig" regeneration project, which saw major highways diverted underground.

He said the Boston scheme had helped improve air quality and speed up traffic.

"It's the sort of thing we can do in Hammersmith where the A4 is a very old mouldering flyover, which we could take underground, releasing a huge amount of land that could be turned into a park, several parks, and other amenities, plus releasing a lot of land for housing," he said.

"You could use some of the proceeds from that housing to pay for it and you would probably also have to look at tolling as well."

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The road redesign proposals:
  • A new mini-tunnel for the A13 to free up land for future development while reconnecting the borough of Barking with the new Barking Riverside development, which is the location for just under 11,000 new homes
  • Decking (building over and around the road) the A3 in Tolworth providing additional land for new homes
  • A small 'fly-under' on the A316 at Chalkers Corner in Richmond would add facilities for cyclists and pedestrians and remove a major pinch point for traffic
  • A 'fly-under' at the A4 in Hammersmith will replace the existing viaduct and the town centre would be reconnected with the River Thames, creating new opportunities for development and open space
  • Decking or a mini-tunnel at the A406 in New Southgate on the North Circular would unlock land for new homes and connect the area around the proposed Crossrail 2 station
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Transport for London will now work with local boroughs on the proposals and an analysis including funding options will be presented to the mayor in May.

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