On July 17, 1997, the 32nd Indiana Monument was added to the National Register of Historic Places. The porous limestone monument has been severely damaged over time by artificial pollutants and natural weathering, and most of the original inscription has faded away. A wooden structure was erected to protect the monument from further decay. Due to its deteriorating condition, the monument was removed from the national cemetery in December 2008 for conservation treatment at the University of Louisville. Conservation Solutions, Inc. (CSI), who treated the monument, recommended that it should be removed to an indoor display. Conservation methods included "cleaning, re-attaching flaking and spalled stone surfaces, removal of inappropriate patch materials and patching".