Tasmanian Infrastructure
The Tasmanian Government fosters a coordinated approach to the planning, delivery and access for transport and recreation infrastructure in Tasmania. Infrastructure is vital for economic growth, social inclusion and sustainable development. It provides the systems and facilities that allow people, goods and information to flow and that supply services like energy and water. The Bridgewater Bridge and proposed Macquarie Point Stadium projects are prime examples of major projects being undertaken by the Australian and Tasmanian Governments. And with 54 major dams, 30 hydropower stations and 2 major windfarms, Hydro Tasmania is Australia's leading clean energy business and largest generator of renewable energy, making Tasmania a renewable energy superpower with energy that's clean, reliable and affordable.
$786M BRIDGEWATER BRIDGE
The new $786M Bridgewater Bridge is being constructed downstream from the existing bridge, providing a new connection between the Brooker and Midland Highways to the north of Hobart. The scope of the project includes a new four-lane bridge with two lanes in each direction, a speed limit of at least 80km/h, a shared path for cyclists and pedestrians, safety screens and barriers, a separated interchange connecting the Brooker and Lyell Highways in Granton and connections to local roads in Bridgewater and Granton.
The navigation clearance of the new bridge will match the Bowen Bridge further downstream. However, the existing Bridgewater Bridge, with its vertical lift mechanism, will be retained, limiting the passage of larger ships up the Derwent River.
$775M MACQUARIE POINT STADIUM
The Macquarie Point Stadium is a proposed multi-purpose stadium at Macquarie Point, on the Hobart waterfront.
The new stadium will have capacity of up to 23,000 seats, a 1,500 person function room, a transparent roof and will be designed to Australian Football League specifications. The stadium will be located within a new Arts, Entertainment and Sports Precinct within the Macquarie Point area. The stadium includes a stage pocket in the northern stand to support concerts and events, a single continuance concourse that services the whole stadium, a seating bowl design and separated back of house and catering facilities with a below ground service road to separate vehicles and stadium visitors and users.
$365M SOUTH EASTERN TRAFFIC SOLUTION
The project, jointly funded by the Australian and Tasmanian governments, builds on recent interchanges at Midway Point and Hobart Airport and the Sorell Bypass. It incorporates the long-awaited upgrades to the Tasman Highway between Hobart Airport and Sorell.
The extensive overhaul will deliver dual lanes along the route through new causeways at Midway Point and Sorell, a second McGees Bridge, parking area and shared pathways. The improvements aim to eliminate bottlenecks and create consistent traffic flow along the busy corridor.
Construction will commence late 2025 and is expected to complete in 2028.
Hobart to Sorell
Sorell to Hobart
GORDON DAM
Operational since 1978, the world-famous 140 metre high concrete arch Gordon Dam was built by the Hydro-Electric Commission. It is one of the highest arched dams in Australia and the combination of Lake Gordon and Lake Pedder is both the largest water storage in Hydro Tasmania's electricity system and the largest in Australia (12.4 million ML).
The use of the double-curvature enabled the dam’s concrete volume and therefore cost to be significantly reduced. The dam and power station are associated with the construction of the first road into south-west Tasmania and the controversy over the flooding of Lake Pedder.
The headwaters of the Huon and Serpentine rivers are captured in Lake Pedder and diverted into Lake Gordon via the McPartlan Pass Canal. The Gordon Power Station is located underground below the lake and discharges back into the river via a 3 kilometre long tailrace tunnel. The power station contains three Francis Hydropower turbines each producing 144 MW of power with space for an additional two. Twin transmission lines carry the output to Hobart and the State grid.
The Gordon scheme is a major component of Tasmania’s electricity generation system, generating around 13% of Tasmania's electricity needs every year.
DEVILS GATE DAM
Devils Gate Dam is one of the thinnest concrete arch dams in the world. It was completed by the Hydro-Electric Commission in 1969 and is 84 metres high. The narrowness of the gorge and the computer-aided design of its double-curvature shape enabled engineers to minimise the volume of concrete and hence the cost of construction. Flood waters falling freely from the crest strike concrete slabs carefully positioned on the abutments to prevent undermining of the dam by erosion.
Devils Gate Dam is part of the Mersey-Forth scheme that comprises eight hydroelectric power stations. Devils Gate Power Station is the sixth station in the scheme and was commissioned in 1969 with a generating capacity of 63 megawatts. It houses a single Boving Francis turbine coupled to a Siemens generator. The machine features a unique bearing arrangement with separate thrust and guide bearings. The turbine has a partially embedded spiral casing with no relief valve or inlet valve.
After an upgrade completed over nine months, the generating capacity at Devils Gate is now 67 megawatts.
CETHANA DAM
Completed by the Hydro-Electric Commission in 1971, the 110 metre high Cethana Dam showed the world that high concrete-faced rock fill dams could be designed and constructed with minimal leakage, in contrast to overseas experience.
Being sited in a narrow gorge, the Cethana Dam was planned to be a concrete arch dam but when an adverse jointing pattern was revealed in the abutments, a concrete-faced rock fill design was adopted. The compaction of rock fill in layers and the elimination of horizontal joints in the face slabs contributed to an excellent result.
Engineers from around the world have inspected the dam and its features have been adopted internationally.
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