London mayor Boris Johnson has finally approved planning permission for Thomas Heatherwick’s controversial Garden Bridge.

After planning was approved by both Lambeth Council and Westminster Council earlier this year, Johnson’s official approval of the project means that the construction of the £175m (US$294m, €216m) bridge can begin next year.

In a statement, Johnson said: “The Garden Bridge will provide a fantastic new landmark for London whilst supporting regeneration and economic growth on both sides of the Thames. It will create a stunning oasis of tranquillity in the heart of our city and boost our plans to encourage walking in the city.”

The Garden Bridge plan will connect the South Bank and Temple areas of London. The bridge is to become a new green space for London and focus will be placed on its garden layout. The landscape designer, Dan Pearson has been working closely with Heatherwick on the project, alongside architecture practice Arup. Plants, trees and woodland aspects will all be incorporated into meandering walkways.