High Quality Content by WIKIPEDIA articles! The South Eastern Freeway is a 66 kilometre four-lane divided carriageway road in South Australia linking the Adelaide-Crafers Highway to the Princes Highway at the Swanport Bridge, a one kilometre long bridge over the River Murray, near Murray Bridge. The Adelaide-Crafers Highway and South Eastern Freeway are seamlessly connected with minimal signage to distinguish them - as a result they are generally considered by South Australians to be a single road, usually referred to simply as the Freeway, as it was the first freeway in South Australia, and is still the longest. It is a part of the National Highway network linking Adelaide to Melbourne and signed as National Highway M1. The three roads mentioned above constitute part of the primary road link between the state capital cities of Adelaide and Melbourne - the other components are the Dukes Highway and Western Highway.