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LEDs have been used to illuminate the reconstructed Interstate-35W bridge in Minneapolis-St. Paul. This is the first interstate highway to be lit using LED lighting.
From the article: "Lighting still accounts for as much as 20 percent of electricity used around the world, so improving lighting technology by even a little bit can lead to great savings in energy and reductions in greenhouse gases."
And the costs? "For large projects like these, the long-run savings in energy and maintenance, as well as the environmental concerns, generally outweigh the short-run costs."
It looks very cool. I can't wait to see it in person! Read the entire article on the StarTribune.com website: LED Lighting: A Bright Idea.