Architecture

Vincent Callebaut aims to span the Seine with veggie-growing gardens

Vincent Callebaut aims to span...
The Green Line would connect Paris' 12th and 13th Arrondissements, improving pedestrian access between the two areas
The Green Line would connect Paris' 12th and 13th Arrondissements, improving pedestrian access between the two areas
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The Green Line would connect Paris' 12th and 13th Arrondissements, improving pedestrian access between the two areas
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The Green Line would connect Paris' 12th and 13th Arrondissements, improving pedestrian access between the two areas
The Green Line would include 20,000 plants, trees, and shrubs
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The Green Line would include 20,000 plants, trees, and shrubs
The Green Line would feature hot water solar panels that provide electricity and hot water for nearby businesses
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The Green Line would feature hot water solar panels that provide electricity and hot water for nearby businesses
The Green Line's overall design is inspired by the skeleton of a fish
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The Green Line's overall design is inspired by the skeleton of a fish
The Green Line would involve the creation of extensive garden space on the banks of the river
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The Green Line would involve the creation of extensive garden space on the banks of the river
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Turning Paris from a City of Light to a City of Green has long been an ambition of architect Vincent Callebaut, and his firm's latest project in this vein envisions a greenery-filled footbridge in the French capital. Named the Green Line, the tree-packed bridge would also be used for growing fruit and vegetables, with an ambitious array of sustainable tech like solar power and wind power included for good measure.

Bringing to mind London's ill-fated Garden Bridge, the Green Line would connect Paris' 12th and 13th Arrondissements, improving pedestrian access between the two areas. Its overall design draws inspiration from the skeleton of a fish and its upper deck would span a length of 220 m (721 ft), while the arching lower deck would span 160 m (524 ft).

As well as the pedestrian walkways, the bridge would contain 3,500 sq m (roughly 37,500 sq ft) of vegetable gardens and orchards, plus there would be another larger 8,500 sq m (91,500 sq ft) of gardens on the nearby riverbank. According to Callebaut, the Green Line would create an impressive 87,500 kg (96 tons) of produce per year in the form of kale, Swiss chard, asparagus, peas, blueberries, and more. The riverbanks would also host office space, retail space, and training rooms, while the river itself would include fish habitats with water filtration systems.

The Green Line would include 20,000 plants, trees, and shrubs
The Green Line would include 20,000 plants, trees, and shrubs

It's ambitious stuff and matched with an ambitious array of sustainability features, too. Hybrid solar panels would produce both power and hot water and work alongside 56 wind turbines, some kind of biogas system (it would be fed non-edible parts of the plants grown to produce energy), while the river would also be used as a heat sink too. Surplus energy would be routed to nearby buildings.

The project also involves Bollinger + Grohman, Greenaffair, and Sempervirens and was commissioned by Ceetrus for an architecture competition. We've reached out to the firm to confirm its status, but it looks like this one is best taken as food for thought.

Source: Vincent Callebaut Architectures

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Leif Knutsen
Another important feature not mentioned, perhaps the most important, is that it would provide a number of GREEN jobs maintaining the structure, gardens, as well as an electric cargo bike distribution network.
Jobs are needed for all and the only jobs that can approach 100% employment and not kill the planet are GREEN jobs.
"The last great exploration on Earth is to survive on Earth." Robert Swann
With modular construction, the majority of the bridge could be built off-site and barged to the location minimizing local disturbance.