Roseville Bridge crosses Middle Harbour in Sydney, Australia. It is the only crossing besides Spit Bridge.
The bridge is 17.4 metres overhead. However, the adjacent Pipe Bridge has only 11 metres. This limitation, combined with only 1.5 metres depth of water, make it out of reach for most cruising vessels.
The original bridge was opened in 1924 and was a low-level two-lane bridge. It was located downstream of the current bridge, and connected Babbage Road to what is today called Healey Way, which is the entrance to Davidson Park within Garigal National Park. The suburbs east of Middle Harbour grew rapidly in the years following the opening of Roseville Bridge and in 1966 the NSW Liberal government under Premier Robin Askin (the member for Collaroy at the time, later the member for Pittwater) opened the current six-lane, high-level bridge. Along with the bridge, a significant upgrade of the approach roads was completed, which became the six-lane Warringah Road. This upgraded section of road is approximately 2km in length.
The 1924 bridge survived the opening of the new bridge, and provided pedestrian access only, until it was demolished in 1974, along with Roseville Baths. Almost nothing remains from these structures.
In 21st century Sydney, Roseville Bridge is part of a major thoroughfare from the Pacific Highway at Roseville to the Northern Beaches and suburbs east of Middle Harbour. Due to the halt of the construction of the Warringah Expressway across Middle Harbour to Wakehurst Parkway and the Burnt Bridge Creek Deviation (which is the only part of the Warringah Expressway built on the Northern Beaches) by the Labor Wran government, there are today only two other major roads to these areas: Mona Vale Road, and Spit Road which crosses Middle Harbour downstream from Roseville Bridge using the Spit Bridge.