The Ohio Department of Transportation is putting together plans to build a planted-soil freeway sound barrier dubbed the 'Chia Pet' sound wall. It is the state's first eco-friendly try at muffling highway noise. Earth-filled bags impregnated with seeds will be allowed to grow in a 12' by 400' stretch of Interstate 70 near Columbus.
Ohio hopes that its Chia Pet sound wall efforts won't be a repeat of the mishap that Wisconsin had when its earth-filled plastic sound barrier walls collapsed and weeds spread in the aftermath.
Eco-Friendly Noise Mufflers
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