Importance of Unmanned Aerial Vehicles for Inspection and Investigation of Long Span Bridges

Inspection was urgently required for a suspected corrosion in few suspenders of a suspension bridge, where dirt and water easily accumulate which was directly above the sockets and at suspender clamps, the location was inaccessible for gantry, similar was the situation when multiple holes of size 100mm were noticed in RCC pile-pier foundations which needed a close up inspection. There is no other alternate methods other than, inspection through UAV’s or drones.