The Sydney Harbour Tunnel is a twin-tube road tunnel in Sydney, Australia. The tunnel was completed and opened to traffic in August 1992 to provide a second vehicular crossing of Sydney Harbour to alleviate congestion on the Sydney Harbour Bridge. It is one of two transportation tunnels under the harbour, the other being a set of rail tunnels for the Sydney Metro.
The Sydney Orbital Network is a 110 kilometre motorway standard ring road around and through Sydney, the capital of New South Wales in Australia. It runs north from Sydney Airport, underneath the CBD to the North Shore, west to the Hills District, south to Prestons and then east to connect with the airport. Much of the road is privately owned and financed by tolls.
Warringah Freeway is a 3.5-kilometre (2.2 mi) divided freeway in Sydney, New South Wales that is part of the Sydney Orbital Network. The primary function of the freeway is to provide an alternative high-grade route from the Sydney Harbour Tunnel and Bradfield Highway at Milsons Point to the A8 and Gore Hill Freeway. The freeway reduces traffic demands on Pacific Highway throughout Sydney's Lower North Shore, bypassing North Sydney and Crows Nest, and provides a vital link to access most of the suburbs in Sydney and is also a major route to the north, south, east and west of the central business district.
The M4 Motorway is a 55-kilometre (34 mi) series of partially-tolled dual carriageway motorways in Sydney, New South Wales designated as route M4. The M4 designation is part of the wider A4 and M4 route designation, the M4 runs parallel and/or below ground to Great Western Highway, Parramatta Road and City West Link, which are part of route A44.
Burnt Bridge Creek Deviation is a 1.7-kilometre-long (1.1 mi) major arterial road in the Northern Beaches area of Sydney, Australia, and is a constituent part of the A8 route. It takes its name from Burnt Bridge Creek which flows beneath the road, although there is no sign of the "burnt bridge" which gives the creek its name.
Sydney Bypass refers to a number of roads, existing and proposed, that motorists can use to avoid the congested approaches to the Sydney central business district (CBD). The main bypasses are:
The Spit Bridge, a steel and concrete girder bridge with a bascule lift span across the Middle Harbour, is located 10 kilometres (6.2 mi) north-east of the central business district in Sydney, Australia. The bridge carries The Spit Road (A8) from a point called The Spit, and connects the suburbs of Mosman, on the south bank and Seaforth, on the north bank.
The A8 is a route designation of a major metropolitan arterial route through suburban north-eastern Sydney. This name covers a few consecutive roads and is widely known to most drivers, but the entire allocation is also known – and signposted – by the names of its constituent parts: Pittwater Road, Condamine Street, Burnt Bridge Creek Deviation, Manly Road, Spit Road and Military Road.
The John Holland Group is an infrastructure, building, rail and transport business operating in Australia and New Zealand. Headquartered in Melbourne, it is a subsidiary of China Communications Construction.
Various railway lines have been proposed for Sydney, Australia, including both heavy rail extensions to the existing network, and more recently proposals for metro style lines–one of which was completed in 2019.
Australian toll roads are found in the eastern states of New South Wales, Victoria and Queensland. The majority of toll roads in Australia are in Sydney, but there are also toll roads in Melbourne, Brisbane, Ipswich and Toowoomba.
WestConnex is a 33-kilometre (21 mi) predominantly underground motorway scheme in Sydney, New South Wales, Australia. A joint project of the New South Wales and Federal governments, the motorway scheme created around 26 kilometres (16 mi) of new tunnels between Homebush and Kingsgrove, passing underneath Inner West suburbs including Haberfield and St Peters. The first of the tunnels, the M4 East, opened to traffic in July 2019. The second of the tunnels, the M8 Motorway, opened to traffic a year later in July 2020. The third of the tunnels which extend the M4 and M8 opened to traffic in January 2023. The final component of the scheme, the Rozelle Interchange, opened to traffic in November 2023.
Ghella is an Italian and international civil engineering company, specialized in the construction of large public infrastructural works and underground excavations through the use of tunnel boring machines. The company builds rapid transit systems (subways), railways, highways and hydraulic works. Ghella is also active in the renewable energy sector, with photovoltaic and hydroelectric power generation plants. The company has built, in joint venture with Acciona, the first stage of the Mohammed bin Rashid Al Maktoum Solar Park. Today Ghella employs more than 3.600 people, lives 14 countries and operates in 4 continents, especially in Europe, the Far East, the Americas and Oceania.
Sydney Metro City & Southwest is a 30-kilometre (19 mi) rapid transit project currently under-construction in Sydney, Australia. The project will extend the Metro North West Line from Chatswood on the North Shore, to Bankstown in the city's south-west via the Sydney central business district.
Sydney Metro West is a rapid transit underground rail project currently under construction in Sydney, New South Wales, Australia. It involves constructing a rail line from Hunter St in the northern Sydney City Centre (CBD) to Westmead in the western suburbs of Greater Sydney which will generally run parallel to the existing Main Suburban and Main Western railway lines, but via different suburbs and different stations, with the main aims being the doubling of rail capacity between the City Centre and Greater Western Sydney and the relief of overcrowding on the Western Line. The line will form part of the Sydney Metro network. Early construction began in 2020, with tunnelling starting in 2023. The line is anticipated to open from 2032.
Sydney Metro Western Sydney Airport, previously known as Sydney Metro Greater West, is a rapid transit rail project currently under-construction in Greater Western Sydney. The project involves the construction of a 23-kilometre (14 mi) line as part of the Sydney Metro system. The line will operate between St Marys, where the line will connect to the Main Western railway line, and Badgerys Creek Aerotropolis via the Western Sydney Airport. It is intended to provide public transport for the upcoming Western Sydney Airport. Construction of the line started in December 2022 and is expected to be completed in late 2026 in time for the opening of the airport.
The M6 Motorway is an under-construction motorway in Sydney, New South Wales consisting of twin, 4-kilometre long tunnels linking the M8 Motorway at Arncliffe to President Avenue at Kogarah. This section started major construction in November 2021 and is expected to open in late 2025. The possibility of future extensions to the south will be accommodated by providing stub tunnels in the project.
The M8 Motorway is a 15.2-kilometre (9.4 mi) tolled dual carriageway motorway in Sydney that is designated the M8 route marker. It consists predominantly of tunnels and includes tunnel connections to the future Western Harbour Tunnel and the M6 Motorway.
The Rozelle Interchange is an underground motorway interchange in Sydney, New South Wales, Australia. It was built as part of WestConnex and opened to traffic on 26 November 2023. The interchange includes a toll-free bypass of Victoria Road between the Iron Cove Bridge and the Anzac Bridge known as the Iron Cove Link.
The Beaches Link is a planned underground motorway scheme in Sydney, New South Wales, Australia. It would consist of a series of motorway tunnels running north-south between Burnt Bridge Creek Deviation at Balgowlah and the Warringah Freeway at Cammeray, providing direct access from the Northern Beaches to the Sydney central business district.
Warringah Freeway, Cammeray 
Rozelle Interchange, Rozelle 
