 Due to the suburb 's relative isolation and hilly geography , it contains very few roads and does not conform to Adelaide 's typical grid pattern – despite the suburb 's age . The earliest road to be built was Mount Osmond Road , and done so by early developers in 1882 to make the suburb more attractive to prospective buyers . Mount Osmond Road remains one of two sealed roads which can today access Mount Osmond and is located to the south of the suburb . It begins as the first interchange on the South Eastern Freeway ( formerly Mount Barker Road ) and then winds around the Mount to the top of the mount and around the golf course . The other sealed road that provides access to Mount Osmond is Hayward Drive , which starts in Beaumont and then winds around the hills to meet the rest of the suburb 's road network . 
