OregonDOT:
Sunken grade on OR 6
OregonDOT:
Above OR 6
OregonDOT:
Soil movement next to the pavement
OregonDOT:
Inspecting the roadbed
OregonDOT:
Overhead view of the sunken grade on OR 6
OregonDOT:
Moving soil next to the road
OregonDOT:
A look at the sunken road
OregonDOT:
Measuring the movement