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Land Bridge Blends Natural and Manmade

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Commuters driving along Highway 14 in Vancouver, Washington, can witness a not-often-seen feat of architecture: a new land bridge heavily covered in vegetation. And it's green in more than color: with sustainability in mind, all of the bridge’s rainwater is canalized to an underground storage pipe that feeds the bridge’s native plants.

Two Seattle-based landscape architecture firms built the Vancouver Land Bridge, to commemorate the bicentennial of the Lewis and Clark Expedition. The bridge, they hoped, would blur the lines between structure and natural land.

 

The team used native plants, including red alder, Pacific dogwood, Oregon white oak, and California oatgrass, to vegetate the overpass.

Connecting the Columbia River with Fort Vancouver, the bridge provides a stunning view of the river and surrounding area. And while the bridge might appear simple, its curved design required 20 retaining walls. 


 
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