WSDOT moves onto SR 410 Nile Valley landslide for continued monitoring.

WSDOT and contractor crews started building rough access trails to access the landslide that covered SR 410 with millions of cubic yards of debris three weeks ago. These trails will allow geotechnical experts to bring in off-road drill rigs. Geotechs anticipate moving the drill rigs onto the slide early next week to collect rock and soil samples and to install instruments to monitor movement and water accumulation in the landslide.