When I was in Haiti, some waterways would be so filled with trash that you could walk over the water.

A much less disgusting method to use trash to help cross the river was shown in 50 Tons of Plastic Recycled into a Footbridge. Students at Rutgers and Cardiff Universities worked together to design and build a 90′ bridge made from used water bottles and other plastic trash. The plastic beams don’t need painted and should have a long life span. The photo below shows the attractive bridge that spans the Tweed River in Wales.

A Welsh startup called Vertech plans to use the process to make more structural elements from trash, reducing landfill space and making a profit. It’s another construction related business opportunity.