and 1910. As of 2016, approximately 33 of these identified Kirkbride Plan hospital buildings still exist in their original form to some degree: 24 have been preserved indicating that the building is still standing and still in use, at least, in part. 11 of the 24 preserved properties received secondary condition codes of deteriorating, vacant, partial demolition or a combination, while the remaining nine have been adaptively reused. Of the 40 hospital buildings that no longer exist (either via demolition or destruction from natural occurrences, such as earthquakes), 26 were demolished to be replaced with new facilities. The highest concentrations of Kirkbride Plan hospitals were in the Northeast and Midwestern states. Fewer Kirkbride Plan hospitals were constructed on the West Coast: In California, the Napa State Hospital was a notable Kirkbride Plan hospital, though the original structure was severely damaged during the 1906 San Francisco earthquake, and was ultimately demolished. The two surviving Kirkbride structures on the West Coast are both located in the state of Oregon, at the Oregon State Hospital, and the Eastern Oregon State Hospital, the latter of which now houses the Eastern Oregon Correctional Institution. While the vast majority of Kirkbride hospitals were located in the United States, similar facilities were built in Canada, and the Callan Park Hospital for the Insane in Sydney, Australia (constructed in 1885) was also influenced by Kirkbride's design. Preservation efforts Due to their intricate architectural features and historical significance, Kirkbride Plan hospitals have attracted conservation efforts from local and national groups, and (as of 2016) approximately 30 of the buildings have been registered with National Register of Historic Places. Local conservation groups and historical societies have made attempts to save numerous Kirkbrides from demolition: The Danvers State Hospital in Danvers, Massachusetts is one example, in which a local historical society filed a lawsuit in 2005 to stall demolition of the building. The majority of the Danvers State Hospital was demolished in 2007 spite of the lawsuit, with only the center portion of the building receiving restoration and conversion into apartments. The Northampton State Hospital in Northampton, Massachusetts, was demolished in 2006. Many of the surviving Kirkbride Plan buildings in the United States have undergone at least partial demolition and have been repurposed, often with the center portions of the buildings being most commonly preserved. The center complexes of the Hudson River State Hospital in Poughkeepsie, New York, and the Oregon