The Montagu Bay and Rosny Hill Interchanges are located on the eastern side of the Derwent River, within 1 kilometre of the Tasman Bridge. The Interchanges work together to link the Tasman Highway, the East Derwent Highway and Rosny Hill Road and are in close proximity to each other, separated by approximately 300 metres.
Generally, the Tasman Highway is a four-lane, dual carriageway road between the city of Hobart and its Airport. Additional lanes were provided between the Montagu Bay Interchange and the Rosny Hill Interchange resulting in three lanes in each direction. The close proximity of the two interchanges to each other created issues for merging and weaving traffic.
The Average Annual Daily Traffic in this location is 60,000 vehicles.