opened it as object in josm ( strg-shift-O) and got an EMPTY relation route=“US 412”. no member → no address → bad luck

next try: http://betaplace.emaitie.de/webapps.relation-analyzer/analyze.jsp?relationId=448030

and the next: http://www.openstreetmap.org/browse/relation/448030

may be, that can help. have a look at the changeset

-walter-

b.t.w. podlatch was a joke