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Latest news See all
Lift off at St Peters Interchange with the first Super T installed
Applications open for community grants
Changed traffic conditions May Street St Peters
Changed traffic conditions on Campbell Street and Princes Highway St Peters
WestConnex powers Sydney's employment potential from the ground up
School holiday fun as western Sydney park is transformed into interactive art gallery
NSW Government launches SMC transaction
WestConnex New M5 community site tours
What's happening now
New M4 tolls
Stretching 7.5km between Parramatta and Homebush and having increased from six to eight lanes, the New M4 is an even faster way to bypass 28 sets of traffic lights on...
New M5 Air Quality Community Consultative Committee
Sydney Motorway Corporation (SMC) established the New M5 Air Quality Community Consultative Committee (AQCCC) in September 2017 to provide input and advice on the location of...
Fighting fit at any age
In January 2017, Sydney Motorway Corporation provided a grant to Concord Senior Citizens Club to purchase four new playing tables for its table tennis group, so the...
Helping pre-schoolers have the best possible start to school
Sydney Motorway Corporation will help 20 pre-schoolers with hearing loss within the WestConnex corridor to go through The Shepherd Centre’s Ready Set Go school readiness...
Our commitment to protecting local heritage is enshrined in the WestConnex Sustainability Strategy includes an overarching objective to “protect and enhance the natural...
Skills and training
As the organisation delivering WestConnex, Sydney Motorway Corporation is driving initiatives and opportunities that build skills, provide employment opportunities and...
Learn more about the M4 East: information centre open
The M4 East Community Information Centre is now open and located on the ground floor at 52 Railway Parade, Burwood.Come along to speak to a member of our project team about...
M4 East Urban Design and Landscape Plan
The M4 East team would like to thank you for taking the time to provide feedback on the project’s draft Urban Design and Landscape Plan (UDLP). The...
Extending the M4 Motorway in tunnels between Homebush and...
King Georges Road Interchange Upgrade
Upgrade of the King Georges Road Interchange between the M5...
Duplicating the M5 East from King Georges Road Interchange...
Photos & Videos
Millions of tonnes of spoil removed to build the New M5 tunnels
WestConnex drives Western Sydney jobs
New M5: Super T girder lift
New M4: Concord Road girder lift
WestConnex - faster, safer, more reliable
M4-M5 Link: Rozelle Interchange and Iron Cove Link
M4-M5 Link mainline tunnels animation
First tunnel breakthrough - SMC exclusive
Community Connections Program
Engineers Australia Experience It! conference supported by WestConnex
New M4 tunnel breakthrough
WestConnex tunnelling update
Ramsay Street cut and cover
Keeping our city moving
Tunnelling begins at Bexley North
New green space in St Peters
Cleaning up the Alexandria landfill site
New inner west park and tunnel link
Upgrade at King Georges Road interchange takes shape
New life for historic sandstone
The Hulk finishes M4 Widening work
Angelo from Granville
M4 Widening equipment goes west
Tunnelling begins in Homebush
FAQs See all
Traffic modelling tells us the expected demand for WestConnex and the number of traffic lanes needed. The motorway has been designed to meet traffic demand now and in the future.
The number of lanes varies across the project:
- M4: the M4 Motorway has been widenedfrom three lanes in each direction to four lanes in each direction between Parramatta and Homebush. The new M4 East tunnels between Homebush and Haberfield will be three lanes in each direction.
- New M5: when the tunnels open, there will generally be two lanes in each direction between Kingsgrove and St Peters. The tunnels can accommodate three lanes in each direction in future, with additional approvals needed for this change.
- M4–M5 Link: The M4-M5 Link will provide twin underground tunnels with four lanes in each direction between Haberfield and St Peters.
Roads and public transport investment aren’t ‘either-or’ options. Roads, rail, light rail, ferries and buses are all part of the transport solution.
WestConnex is just one of more than 80 projects outlined in the NSW Long Term Transport Master Plan to address the state’s complex transport needs. It is a critical part of all of these integrated strategies to tackle congestion and increase productivity for a growing city.
Not all trips in Sydney can be undertaken by public transport. By 2036, more than 70 per cent of the proportion of increased travel demand in Sydney will be by car. By 2036, 45 per cent of public transport will be via bus services, which rely on the road network.
The NSW Government is investing $41.5 billion (2016–17 NSW Budget) in transport projects during the next four years. This includes both roads and public transport – upgrading the bus fleet, and building the CBD and South East Light Rail, Sydney Metro and Parramatta Light Rail.
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