A road in Illinois has to be shut down for two months because of the migration of snakes in that area. Snake Road In Illinois Closes For Two MonthsThis past summer has been crazy with so many road closures because of construction. ironman100 ironman100 loading...Down in southern Illinois, LaRue Road in the Shawnee National Forest has been closed until October 30th because of snakes. People are allowed to walk down Snake Road, but I would take a hard pass on that one. According to NBC Chicago...Nearly three miles of a southern Illinois road have been shut down for a rather unusual reason: a snake migration - albeit a massive one.