This article is about the freeway in South Australia. For the freeway in Melbourne, also known as the South Eastern Freeway, see Monash Freeway.The South Eastern Freeway (previously signposted as Princes Highway) is a 76 kilometre controlled-access highway in South Australia. It carries traffic over the Adelaide Hills between Adelaide and the River Murray, near Murray Bridge, connecting via the Swanport Bridge to the Dukes Highway which is the main road route to Victoria.