Perspective: Drone Inspection Service Helps Extend Life of a Short-line Railroad Bridge
The sounds one hears any day around the Ottawa Lift Bridge in Illinois have not changed for more than a century: the Illinois River rushing underneath, passing barges blaring their horns, the rhythmic "clunk clunk" of freight trains slowly crossing the iron railroad bridge. But recently that timeless medley was interrupted by a new sound: the methodical hum of unmanned aerial vehicles (UAVs), or drones, flying in precise...
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