The first comprehensive plan for Sydney motorways, the
Cumberland County Plan, was released by
the then county council in 1948 and adopted in 1951 by the NSW Government. The Plan envisaged a radial motorway network centred on Sydney's CBD. Though construction of the roads progressed slowly – by 1971 only isolated sections were complete – the Plan ensured corridors were reserved, providing property owners with certainty about future infrastructure. This changed in 1976 with the election of the
Australian Labor Party under
Premier Neville Wran. Wran, faced with his predecessors' ambitious infrastructure plans, inner-city opposition to motorway projects (including a powerful
'Green Bans' movement) and a deteriorating financial situation, halted work on inner-city projects, scaled back the under-construction
Eastern Suburbs railway line and eliminated a number of the Cumberland Plan's inner-city road reservations. Though Wran's decision to sell off the M4 East corridor was later criticised, the Cumberland Plan's radial concept was anyway beginning to lose relevance. The city's passenger and freight gateway had shifted south of the CBD, with long-distance passengers increasingly arriving via
Sydney Airport, not
Circular Quay or
Central station; and
Port Botany increasingly supplanting
Sydney Harbour as the city's main shipping hub. At the same time, employment was decentralising. Retailers were clustering in new suburban shopping malls; factories were moving to less constrained greenfield sites in the outer suburbs; and many companies were moving to suburban campus-style office parks. The
Western Motorway, now known as the M4, was completed from
Lapstone to
Concord in 1992. The
South-Western motorway, known as the M5, reached from
Prestons to
Beverly Hills by 1995. The unfinished M5 East section of the orbital, between Beverly Hills and the airport, remained contentious. Although a surface corridor had been reserved for much of the route, the
Labor government of
Bob Carr was anxious to minimise the surface impact. After last-minute revisions to the design, the resulting motorway, opened in 2001, was too steep for laden trucks returning from Port Botany, significantly increasing vehicle emissions and frequently overwhelming the ventilation system. The WestConnex plans for the widened Campbell Street bridge over the canal to Alexandria used part of the
Johnstons Creek Route corridor.
Labor proposals in the 2000s The Labor government proposed a number of schemes in the 2000s.
M4 East In July 2002, the M4 East scheme was proposed with three options: The preferred option would also widen the existing motorway between Homebush Bay Drive and Concord Road. Members of the government were divided over the M4 East proposal and ultimately did not proceed with it in early 2005 due to community opposition. The preferred option eventually formed the basis of the concept design for the M4 East project of the WestConnex. Despite the M4 East and Marrickville Tunnel not eventuating, the government continued to develop the schemes. In October 2007, the government was considering a '3-in-1' tolled motorway being dubbed the Gateway. The proposal was estimated to cost at least $7 billion, and would be funded by a proposed retail sale of electricity. The three motorway sections that make up the proposal were: • The first section would head north and connect to Victoria Road, possibly around Iron Cove bridge • The second section would extend the M4 to the city CBD via the Anzac Bridge • The third section would link the M4 to the Airport through a 5 km tunnel (similar to the Marrickville Tunnel) The government continued to develop the schemes secretly in 2009, with funding to be provided by the federal
Labor government. The M4 East failed to receive funding in the
2009/10 federal budget.
Marrickville Tunnel Also in 2004, the Marrickville Tunnel scheme between the M4 East and Mascot was being considered by the government. The scheme did not progress and was never placed on public display. The concept of the scheme was later developed to become the M4–M5 Link project (and later the M4–M8 extensions) of the WestConnex.
Inner West Motorway In March 2007, prior to the
state election later that month,
The Daily Telegraph claimed the government was planning the Inner West Motorway, which was similar to the Marrickville Tunnel. It would be a tunnel which would run from St Peters underneath Enmore, Stanmore, Camperdown and Annandale to City West Link and Victoria Road. This claim was dismissed by the government. In 2010, a report by consultancy Evans & Peck proposed the Inner West Bypass which followed a similar route. The bypass was estimated to have a $12 billion price tag, and would require four to five ventilation stacks. Under the proposal, the bypass would connect to another tunnel that would follow the alignments of Victoria Road and the cancelled
Lane Cove Valley Expressway, joining the
M2 Hills Motorway at Lane Cove. From there, another tunnel would follow the alignment of Pacific Highway and join the
F3 Sydney–Newcastle Freeway.
M5 duplication In 2009, the government released the M5 Transport Corridor Feasibility Study, which investigated strategic options for improving the M5 Motorway corridor. The study identified a preliminary preferred option, being the M5 East Duplication, consisted of duplicating the M5 East and construction of a new connection from the M5 East at Arncliffe to Euston Road, Qantas Drive and Gardeners Road. The strategic concept for the M5 East Duplication was placed on public exhibition between November 2009 and March 2010 for community and stakeholder feedback. Feedback received was used to further develop and refine the scheme to become the King Georges Road Interchange Upgrade and New M5 projects of the WestConnex.
Coalition proposal in the 2010s 2012 "First things first" strategy Elected in 2011 on a promise to create an integrated transport strategy for the city, the
Coalition government of Premier
Barry O'Farrell established an independent advisory body, led by former premier
Nick Greiner, to assess projects and determine priorities. Greiner's
Infrastructure NSW (iNSW) evaluated a number of long-standing motorway proposals, including the M4 East, the
F6 extension (now called the M6) and the
M2-F3 link (later called NorthConnex). iNSW released its strategy, entitled
First Things First: the state infrastructure strategy 2012–2032 , the following year. The plan identified a motorway, which it named "WestConnex", as the state's top road priority. The creation of WestConnex was one of the major points of agreement between two competing strategic transport reports, commissioned simultaneously in 2011 by the NSW Government, from iNSW and
Transport for NSW. O'Farrell accepted the recommendation, committing $1.8 billion to begin work. The initial scheme called for: • widening of the existing M4 between
Parramatta and
Homebush, especially at
James Ruse Drive • eastern extension of the M4 to
Camperdown • a tunnel (later the "M4 South" or "M4-M5 Link") from Camperdown to
St Peters for access to
Port Botany and
Sydney Airport • widening of the existing
M5 East • improvements to surface roads around the port and airport The tunnel from the M4 to St Peters component would provide the first step towards an inner-city bypass, which was originally planned to connect the airport to the
Victoria Road corridor.
Transport for NSW, which released its long-term integrated transport plan around the same time, committed to further planning work on the northern section of the bypass. iNSW estimated the benefit-cost ratio for WestConnex at "more than 1.5", noting that the removal of freight traffic from
Parramatta Road could also facilitate urban regeneration along the Inner West's main road link. With a
change of government in 2013, the federal government's opposition was reversed.
2013 State Significant Infrastructure Application Report By November 2013, the WestConnex was divided into three stages: • Stage 1(a): M4 Widening, between Church Street, Parramatta to Homebush Bay Drive • Stage 1(b) M4 East, extending the M4 to Parramatta Road and City West Link at Haberfield • Stage 2: M5 East Airport Link, between King Georges Road and St Peters • Stage 3: M4 South, between Haberfield and St Peters via Camperdown
Later modifications The scheme underwent a number of changes from the concept recommended by iNSW in 2012, in particular to the M4-M5 Link. In late 2014, the government realigned the M4-M5 Link to accommodate a link to a
future second harbour road tunnel, with a view to one day completing an inner-city bypass. This would mean a large interchange at the site of the abandoned Rozelle Rail Yards close to the
Anzac Bridge. The interchange, now known as
Rozelle Interchange, was later moved underground with a large park to be built above the interchange. Additionally, a tunnel under was added to bypass the congested
Victoria Road corridor and connect with the
Rozelle Yard interchange. On 9 November 2016, a new route for the M4-M5 Link took it under
Annandale and the
Hunter Baillie Memorial Presbyterian Church. An interchange with Parramatta Road at Camperdown was also removed. Stub tunnels were added to the New M5 to connect to a proposed
F6 extension to the
St George and
Sutherland Shire areas. The proposed F6 extension is now known as
M6 Motorway. In August 2019, the right turn from The Crescent northbound to eastbound was also proposed to be modified to an overpass, with changes to surrounding pedestrian and cycling links and the layouts of surrounding intersections. The modification was approved on 30 September 2020. == Objectives ==