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Latest news See all
Changed traffic conditions at the Sydney Park Roundabout Alexandria
New M4 tunnels reach new lengths
Community partnership with Wests Tigers a roaring success
New M4 surface work nears completion
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
What's happening now
Widening the existing M4 Motorway from Parramatta to Homebush from three to four lanes in each direction. Today, more than 100,000 vehicles a day use the M4. It is a notorious...
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...
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...
Tunnels connecting to the New M4 at Haberfield and New M5 at St Peters via Rozelle.The M4-M5 Link project includes an interchange at Rozelle with provision for a future...
King Georges Road Interchange Upgrade
Upgrade of the King Georges Road Interchange between the M5 West Motorway and the M5 East Motorway at Beverly Hills, in preparation for the New M5 project.Work was fast-tracked...
Partnering with communities
Community Connections Program As part of the commitment of the broader WestConnex project to connect communities, Sydney Motorway Corporation has established the Community...
Duplicating the M5 East from King Georges Road Interchange Upgrade at Beverly Hills to a new interchange at St Peters. The New M5 will provide twin underground motorway...
Widening the existing M4 Motorway from Parramatta to Homebush...
Extending the M4 Motorway in tunnels between Homebush and...
King Georges Road Interchange Upgrade
Upgrade of the King Georges Road Interchange between the M5...
Photos & Videos
WestConnex: 2017 a year in review
New M4 tunnel drivethrough
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
WestConnex is generating more than 18 hectares of new open space for communities in the inner west.
We sometimes use parks and other government-owned land during construction. This helps us to avoid the acquisition of private property. When we use green space during construction, we always try to return it for community use when construction is finished.
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.
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