Here's an interesting little nugget to file in the Department of "Bet Ya Didn't Know That."
Did you know that the Missouri Department of Transportation is recycling roof shingles for roads? It's true. Last year MoDOT used 53,000 tons of recycled asphalt shingles (enough to cover 17,000 homes) for roadwork projects across the state.
Shingles are mostly asphalt making them ideal for road construction. MoDOT estimates it saved about $20 million last year using recycled shingles and reduced the amount of petroleum (a key ingredient of asphalt) required for roadwork by 20 percent.
Following is a short video that explains how MoDOT turns the shingles into road asphalt.