From WSDOT: Visitors to Johnston Ridge Observatory should expect an extended closure of the highway after landslide washed out bridge
Road to Mount St. Helens observatory closed indefinitely after ‘catastrophic’ landslide
Excerpt from The Olympian via Yahoo!:
A popular observatory near Mount St. Helens is indefinitely closed as engineers evaluate a massive landslide that blocked State Route 504.
Johnston Ridge Observatory, located within Mount St. Helens National Volcanic Monument, overlooks the north side of the mountain that collapsed in a 1980 eruption.
SR 504, which leads to the observatory, closed Sunday evening due to a debris slide that covered the upper portion of the roadway and washed away Spirit Lake Outlet Bridge. A dozen people and a dog had to be evacuated from the observatory by helicopter following the landslide.
It’s unclear when the roadway may reopen again, according to a Tuesday news release from the Washington State Department of Transportation. The debris fell about 2,000 feet from a hillside adjacent to the highway and caused “catastrophic damage” to the 85-foot bridge span, according to WSDOT.
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