Sydney Infrastructure & Transport Pipeline to 2025

Sydney Infrastructure Projects
A collage of the biggest infrastructure projects in Sydney

There is a major Infrastructure boom currently taking place in Sydney with a total of $74 Billion of infrastructure being delivered in the state of NSW where Sydney is the major beneficiary of the spending.

City shaping projects which will shorten commute times & grow Sydney’s status as a global city, as a candidate city for the world’s top 10 global cities this investment was necessary to take the greater Sydney metropolitan region to the next level by global standards.

Here is a compilation of the top 5 infrastructure projects happening in Sydney which are due to be completed over the next decade.


Map of Westconnex

Westconnex is Australia’s largest transport infrastructure project, the biggest every project undertaken in Australia’s history. It will be the longest under city urban road tunnel in the world.

M4 Widening

  • An upgrade of the existing M4 to 4 lanes each way between Parramatta & Homebush

King Georges Road Interchange Upgrade

  • Upgrade to the King Georges Road interchange to remove a major traffic bottleneck

M4 East

  • 6.5km long extension of the M4 east heading towards the city, with 5.5km of the motorway being underground in a tunnel.

New M5

  • Duplication of the M5 from the King Georges Road Interchange to a new interchange at St Peters which will be 9km long. Includes a provision to connect the road to the future F6 Extension.

M4–M5 Link Main Tunnels

  • two 7.5km tunnels will be built in each direction connecting the M4 East in Haberfield & the New M5 at St Peters with provisions to connect the road to the future Western Harbour Tunnel, & Beaches link.

Rozelle Interchange, Iron Cove Link & Sydney Gateway

  • The interchange in Rozelle will be mostly underground and located at the site of the old Rozelle Rail Yards. It will deliver up to 10 hectares of new green space.
Westconnex M4 East
Westconnex M4 East - Source: NSW Government

Here are the opening dates for each respective section:

2017 – M4 Widening & King Georges Road Interchange Upgrade
2019 – M4 East
2020 – New M5
2022 – M4–M5 Link Main Tunnels
2023 – Rozelle Interchange, Iron Cove Link & Sydney Gateway

Total length: 33k

Total cost: $16.8 Billion


NorthConnex Entrance - Source: NSW Government

NorthConnex is a major road infrastructure project taking place in Sydney’s North-West which is currently under construction.

It is a 9km twin tunnel with each tunnel catering to that specific traffic flow which will go underground (up to 90m at the tunnel’s deepest point, under the North West Rail Link Tunnel) connecting the M2 Hills Motorway & Pennant Hills Road to the M1 Pacific Highway Interchange.

It will mean there will be no traffic lights between Newcastle & Melbourne.

NorthConnex Map
NorthConnex Map - Source: Transurban

Opening Date: 2019

Total Length: 9km

Cost: $3 Billion

Sydney Metro Stage 1

Sydney Metro Map Stage 2
Source: Transport NSW

The Sydney Metro Stage 1 is part of the Sydney metro project which is the largest public transport project in Australia.

It involves creating a new train line which will be both underground & above ground (Skytrain) including 8 stations from Epping Station to Cudgegong Road in Box Hill.

Here is the list of new stations:

  • Cherrybrook
  • Castle hill
  • Showground
  • Norwest
  • Bella Vista
  • Kellyville
  • Rouse Hill
  • Cudgegong Road

Also, the current Epping to Chatswood line will be converted into Sydney Metro specification where it will connect to Sydney Metro stage 2 at Chatswood.

Opening Date: 2019

Total Length: 36KM (23km of new track & 13km of upgrading existing track)

Cost: $8.3 Billion

Sydney Metro Stage 2

Sydney Metro Under the Harbour Bridge
Source: Transport NSW

The Sydney Metro Stage 2 is an extension of Stage 1 and is part of Australia’s largest public transport infrastructure project.

It involves a 30km line of track which goes in both directions from Chatswood to Bankstown which includes a tunnel underneath the Sydney Harbour & will include driverless trains with a 4-minute frequency in the peak.

It involves a several new stations which include:

  • Crows Nest
  • Victoria Cross
  • Barangaroo
  • Pitt St
  • Waterloo

Also, all stations from Sydenham to Bankstown will be upgraded to metro specifications to cater for the driverless metro trains.

Completion Date: 2024

Total Length: 30km (from Chatswood to Sydenham new underground tunnel track)

Cost: $10 Billion


Sydney Metro West

Sydney Metro West to Parramatta Train - Source: NSW Government

Sydney Metro West is another extension of the Sydney Metro project. It will be a congestion-busting line which will address the capacity issue which is currently taking place on the T1 Western Line which is getting worse by the day.

The Project is expected to reinvigorate the Bays Precinct which was destined to be a tech hub within Sydney & create many value capture options where fast commute times will be accessible to both Parramatta & the Sydney CBD.

There will be several new stations as part of the Sydney Metro West which have been announced, they are as follows:

  • Central
  • The Bays Precinct
  • North Strathfield or Concord West for transfer to the T1 Western Line
  • Sydney Olympic Park
  • Parramatta
  • Westmead

There are several other stations under consideration including:

  • Camellia/Rydalmere
  • North Burwood/Five Dock
  • Kings Bay
  • Pyrmont

Opening Date: 2027

Length: 25km+

Cost: $10 Billion+

Sydney CBD Light Rail

Queen Victoria Building Light Rail - Source: NSW Government

The Sydney CBD South-East light rail is a huge project which will run directly through the spine of the city’s CBD (George St) & will shape the CBD for many years & decade’s to come.

It will involve an overhead wire-free tram from Circular Quay to Central Station & then be going to Moore Park (sporting & entertainment precinct) where it splits off into 2 branch lines, one to the Randwick via UNSW & the other to Kensington via Anzac Parade.

Sydney CBD Light Rail Route
The Sydney CBD Light Route Route showing connection other other modes of transport - Source: NSW Government

The line will be 12km long & it will include 19 new stations with several interchanges including Circular Quay, Town Hall, & Central. Here is a list of stations:

  • Circular Quay
  • Grosvenor Street
  • Wynyard
  • Queen Victoria Building
  • Town Hall
  • Chinatown
  • Rawson Place
  • Central Station
  • Surry Hills
  • Moore Park
  • Carlton Street
  • Todman Avenue
  • UNSW Anzac Parade
  • Strachan Street
  • Kingsford
  • Alison Road
  • Wansey Road
  • UNSW High Street
  • Randwick

Opening Date: Original 2019, Estimated 2020+

Length: 12km

Cost: Original $2.1 Billion, Estimated $3 Billion+

Parramatta CBD Light Rail Stage 1

Parramatta Light Rail CBD Macquarie Street
Source: NSW Government

The Parramatta Light Rail stage 1 will fundamentally change the face of the Parramatta CBD. It will convert part of Church St known as “Eat Street” to pedestrian & light-rail only thereby activating the restaurants and shopfronts.

It will run from Westmead through the medical precinct going through North Parramatta into the CBD then onto Camilia, Telopea & Carlingford.

It will add several easy to use public transport stations within the Parramatta CBD making it a lot more accessible & potentially increase quality development within the CBD spurring major businesses to move into the precinct.

There are 15 stations as part of the first stage, here are the stations announced:

  • Western Sydney University Westmead
  • Westmead Hospital
  • Westmead Children’s Hospital
  • Parramatta North Urban Transformation Program
  • Factory St
  • Church st North
  • Prince Alfred Square
  • Church St Eat Street
  • Parramatta Square
  • Macquarie St East
  • Tramway Av
  • Camellia
  • Rydalmere
  • Dundas
  • Telopea
  • Carlingford
Parramatta Light Rail Stage 1 Map
Parramatta Light Rail Map - Source: NSW Government

There will be trams running at a frequency of 7.5 minutes in the peak & the line will be a total of 12km long.

Opening Date: 2023

Length: 12km

Cost: $2 Billion

Parramatta CBD Light Rail Stage 2

Parramatta Light Rail CBD Western Sydney University
Source: NSW Government

The Parramatta light Rail Stage 2 will compliment stage 1 where it will start & connect with the existing proposed Stage 1 station of Camillia. From there it will continue either through Rydalmere or Camillia where it will go through the regentrified Melrose Park, follow onto Wentworth point via Hill road and into Sydney Olympic Park which will feed residents to the proposed Sydney Metro West station then finally finishing up at the Carter Precinct of Lidcombe.

The line is expected the be approx. 10km long & although frequencies are not announced as of yet, it is anticipated it will have similar frequencies of the stage 1 section of the light rail at 7.5 minutes in the peak.

Parramatta Light Rail Stage 2 Indicative Map
Parramatta Light Rail Stage 2 Indicative Map - Source: Transport for NSW

Here is 7 proposed station for the stage 2 Parramatta Light Rail:

  • Camellia
  • Rydalmere
  • Ermington
  • Melrose Park
  • Meadowbank
  • Wentworth Point
  • Sydney Olympic Park
  • Carter St

It will take 25 minutes to reach Camillia from Sydney Olympic Park and it will be 33 minutes from Parramatta to Sydney Olympic Park.

Opening Date: ~2025

Length: ~10km

Cost: ~$2 Billion

Western Sydney Airport

Western Sydney Airport Sign
Western Sydney Airport Sign

The Western Sydney Airport which is to be built out at government-owned land at Badgery’s Creek will be Sydney’s 2nd international airport after Kingsford Smith international & it will be an airport to serve the residents of Western Sydney.

Accompanying the airport will be an Aerotropolis which will spur growth in the immediate surrounds with residential, commercial, retail & industrial uses.

The Airport will include 1 runway which could later we increased to 2 runways & serve a total of 50 million passengers per year. The airport will be opened with a goal of serving 5 million passengers per year.

There will also be major road & rail upgrades where a new rail line will be built from St Marys to the Airport in time for the airport’s opening. Also several new major road projects will be built before the airports opening including the M12 Motorway (see more on this below), upgrading Briggelly road to a minimum of 4 lanes between the Camden Valley Way & The Northern Road and upgrading the Northern Road to a minimum of 4 lanes between Narellan & the M4 Motorway.

Total Airport Cost? $5 Billion.

Total Amount of Runways? 1 runway at 3km long.

Western Sydney Airport Completion Date? the year 2026.

M12 Motorway

M12 Motorway Proposed Route
M12 Motorway Proposed Route - Source: NSW Government

The M12 Motorway or the Western Sydney Airport Motorway is a brand new motorway which will be built from the M7 at Cecil Hills all the way to the Western Sydney Airport.

It will serve as a direct motorway connection to the new airport connecting to the existing Sydney Motorway Network. It will open with 4 for lanes (2 lanes in each direction) with a provision for 6 lanes (3 lanes in each direction).

It will be 16km long & is expected to cost $1.2 Billion to build. It is expected to open with the Airport in 2026.

M12 Motorway Sign

There will be a provision for a Mamre Road/Devonshire Road exit from the motorway aswell to act a a catylyst for potential growth in the region.

When will the M12 be open? it will open in the year 2026.

How long will the M12 motorway be in length? The 12 Motorway will be 16km long.

How much will the M12 Motorway cost to build? It will cost $1.2 Billion AUD.

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Dejan is the Founder & head journalist of Build Sydney. He obtained a degree in Computer Science and has a passion for urban development. He has a goal to report on Sydney's Journey from a major international regional city into a truly global city, most notably the changes in the urban landscape, high rise buildings, infrastructure and transport.