Equipment Type

Drones Monitor Activity in Unstable Rock Slide Area

Washington State DOT engineers use bird's eye view of sliding rock slabs to assess rock and debris slide

March 27, 2017

Washington has been experiencing heavy rainfall, and the saturated steep hillsides along State Route 503, 20 miles east of Woodland, started to slide on March 13, carrying rocks, mud and trees onto the roadway. WSDOT's concern is that the potential of more slides is likely, but because the hillside is dangerously unstable, safely assessing the situation to develop clean up and repair plans has been difficult.

Instead of risking workers in the slide area, WSDOT used a drone to survey the damage and determine what the hillside may do next according to what they see in the inaccessible slide area.

Here's what WSDOT's drone videoed:

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