Bridgewater Bridge

Bridgewater Bridge
The Bridgewater Bridge
Coordinates42°44′42″S 147°13′33″E / 42.74500°S 147.22583°E / -42.74500; 147.22583
Carries Midland Highway
CrossesDerwent River
LocaleHobart, Tasmania, Australia
BeginsGranton
EndsBridgewater
Named forBridgewater
OwnerDepartment of State Growth
Preceded byBlair Street Bridge
Followed byBowen Bridge
Characteristics
Designbox girder
MaterialConcrete
Total length1.2 km (0.7 mi)
Clearance below16 m (52.5 ft)
No. of lanes4
History
Constructed byMcConnell Dowell
Construction startOctober 2022
Opened1 June 2025
ReplacesTruss bridge with vertical lift (1946-2025)
Location

The Bridgewater Bridge is a 1.2-kilometre-long (0.7 mi) concrete box girder bridge that carries the Midland Highway across the Derwent River in Hobart, Tasmania, Australia. This bridge connects the Hobart suburbs of Bridgewater and Granton. It accommodates a four-lane highway and a grade-separated footpath and cycle lane. It is the fifth such bridge at this location to carry this name.

The bridge was funded by the Australian and Tasmanian Governments at a cost of $786 million and constructed by McConnell Dowell. it is expected to service 22,000 trips per day. It is the first bridge at the location to have a marine navigation clearance of greater than 16 metres - consistent with the Bowen Bridge.

It was opened in June 2025 to replace the fourth Bridgewater Bridge (Bridgewater Bridge and Causeway), a steel truss vertical-lift bridge and specially-built causeway. This was a two-lane road bridge that also carried the South Railway Line until it's closure in 2014. This bridge had been in operation since 1946, and was the oldest surviving lift span bridge in Australia; lifting of the bridge caused considerable traffic delays in the bridge's final years.