By Joanna FosterPosted 07.06.2012 at 1:03 pm 3 Comments
The 1,585-foot Fort Steuben Bridge spanned the Ohio River, linking Ohio to West Virginia for 84 years, but it took just seconds for it to drop in a controlled demolition in February. The Ohio Department of Transportation closed the aging concrete-and-steel suspension bridge in 2009 and finally hired general contractors Joseph B. Fay Company to take the bridge down.
A new paint made of power plant waste and carbon nanotubes can automatically detect structural faults, alerting authorities before damage occurs. It could be a cheaper, easier way to monitor facilities like bridges, mines and even wind turbines.
The rumbling you feel driving along a bridge may soon serve a purpose beyond just waking you up behind the wheel. Researchers at MIT have developed a tiny energy-harvester that is able to harness low-frequency vibrations like those made by a bridge or pipeline and converting them to electricity for wireless sensors.