From USFS-
SR 504 Landslide Update! Out of an abundance of caution WSDOT has moved the road closure on State Route 504 back to milepost 43 near the Coldwater Science and Learning Center. This means that until further notice the Coldwater Lake area and Hummocks Trail will not be accessible. Please note that the Science and Learning Center is not currently open to the public. Those wishing to sight see along the SR504 corridor our encouraged to stop at the Castle Lake Viewpoint and not park in front of the closure gates on SR504. Access through these gates is needed for ongoing assessments and for emergency purposes.
Since water is still moving through the debris flow and it is still considered an active slide, no debris will be removed from the roadway until a geotechnical assessment can be made and work can proceed safely.
Given the extent of the damage to the bridge, road, power and fiber optic lines it is unlikely that Johnston Ridge Observatory will reopen to the public this season. This is a preliminary assessment. More updates will be shared in the coming days and weeks as additional information about the slide and slide damage is revealed.
We understand that this situation may cause some visitors frustration and ask for your patience and understanding as we work to keep people safe and chart the best course for repairs.