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The California Department of Transportation (Caltrans) is one of the largest state departments of transportation in the nation, managing more than 50,000 miles of California’s highways, or about ...

They have created a 3D concrete bridge that absorbs CO2 like bones and uses 60% less material than a conventional bridge.

Detroit — The owners of the Ambassador Bridge have dropped plans to build a concrete mixing plant on a riverfront site where the final link of the popular RiverWalk bike and pedestrian path would go.