WestConnex Acquisition & Valuation

WestConnex was acquired by Transurban Group, La Caisse, AustralianSuper, CPP Investments and Abu Dhabi Investment Authority for $21B in September 2021.

WestConnex acquisition price

$21B

Acquired by Transurban Group, La Caisse +3 · Sep 2021

Key investors in WestConnex

WestConnex Overview

About WestConnex

WestConnex is a tolled motorway network serving metropolitan Sydney. It serves motorists, freight operators and businesses using road connections between western Sydney, the central city and the airport or port corridors, and its products or services sit inside day-to-day operating or consumer workflows rather than acting as a passive holding vehicle. The business earns revenue through regulated and contractually defined toll charges paid by road users. Founded in 2015 and based in Sydney, WestConnex operates across Sydney through interconnected tunnels, widened motorways and associated operations and maintenance systems. The network combines multiple concession assets developed in stages and is intended to remove traffic from local roads while improving cross-city connectivity. A Transurban-led consortium acquired 51% from the New South Wales government in 2018 and later increased its interest. Customers choose the company for a long-dated concession, strategic urban routes and electronic tolling integrated across a large network, while its capital base supports the people, technology, physical assets and regulatory capabilities needed to deliver those services. Its profile in this research is that of an operating company with identifiable customers and commercial revenue, even where long-term institutional shareholders own a material stake.


Founded

2016

HQ

AustraliaSydney

Status

Acquired

Customer focus

B2C

Revenue model

Usage-based

Valuation

$3.1B (Oct 2026)

WestConnex Acquisition

WestConnex was acquired by Transurban Group, La Caisse, AustralianSuper, CPP Investments and Abu Dhabi Investment Authority for $21B on 21 September 2021.

WestConnex is Australia's largest road infrastructure project, a toll road network in Sydney. In September 2021, the Sydney Transport Partners (STP) consortium, led by Transurban, agreed to acquire the remaining 49% equity stake from the NSW Government for AU$11.1 billion, achieving 100% ownership. CDPQ (La Caisse) joined as a new partner, contributing to 20.5% of the acquisition cost for a 10% stake in STP. Transurban's documents indicate an implied enterprise value for 100% of WestConnex of AU$33 billion in 2021, up from AU$25 billion in 2018, including net debt. The deal was fully equity-funded, with Transurban raising AU$4.22 billion, and expected to support capital releases exceeding AU$600 million until FY25. Financial close occurred in October 2021. Upon completion, the NSW government received a total of AU$20.4 billion from the full sale of WestConnex.

WestConnex acquisition details
AcquirerDateTypePrice
  • Transurban Group
  • La Caisse
  • AustralianSuper
  • CPP Investments
  • Abu Dhabi Investment Authority
21 Sep 2021Strategic M&A$21B

Sources: transurban.com, bloomberg.com, infrastructureinvestor.com, lacaisse.com

WestConnex Valuation

WestConnex is currently valued at $3.1B, based on its secondary sale in October 2026. Read the announcement ↗

The round was led by Transurban Group.

WestConnex valuation by funding round

WestConnex valuation by funding round
DateStageValuation
Oct 2026Secondary$3.1B

WestConnex Funding History

WestConnex has 1 recorded secondary share sale and no primary funding rounds.

WestConnex funding rounds
DateStageInvestorsValuationDeal Summary
Oct 2026SecondaryTransurban Group (lead)$3.1BTransurban Group agreed on 30 September 2026 to acquire Canada Pension Plan Investment Board's 10.5% interest in Sydney Transport Partners, the vehicle that owns WestConnex, as part of a broader A$4.5 billion cash transaction that also included CPPIB's stake in NorthWestern Roads Group. The deal lifts Transurban's ownership in Sydney Transport Partners to 60.5% from 50.0% and was described as an all-cash acquisition funded through committed debt facilities, with completion expected in calendar 2027 subject to regulatory approvals and other project consents. The transaction fits Transurban's strategy of increasing control over high-quality, long-dated Sydney toll-road assets and expanding its economic interest in WestConnex alongside Westlink M7 and NorthConnex. The seller, CPPIB, is exiting portions of its Australian toll-road portfolio after a long-running co-investment relationship with Transurban, and the acquisition was framed as a change in ownership interests rather than a new project development or a public-listing event. WestConnex is Sydney's major integrated motorway network held through Sydney Transport Partners, while Transurban is the long-time operator and co-owner of the asset. The broader portfolio includes Westlink M7 and NorthConnex under NorthWestern Roads Group, and the concession interests extend through to 2060, giving the combined toll-road portfolio substantial remaining operational life and scale.

Who has invested in WestConnex?

1 investor has backed WestConnex across its funding rounds, including Transurban Group.

Lead investors include Transurban Group.


WestConnex Investors

Investors in WestConnex by funding rounds participated
InvestorHQRoundsRoleFirst check

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WestConnex Competitors

WestConnex competitors include listed companies like Ventia, Shenzhen Expressway Corp, Hill & Smith and Primoris Services, and private ones like NorthWestern Roads Group and Road King Expressway International.

Public and private companies comparable to WestConnex
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
NorthWestern Roads GroupAustraliaSydneyPrivate--$3.1B-
VentiaAustraliaAustraliaPublicly listed$4.3B$386M$3.2B0.9x
Shenzhen Expressway CorpChinaChinaPublicly listed$1.4B$735M$3B4.8x
Hill & SmithUnited KingdomUnited KingdomPublicly listed$1.1B$213M$2.9B2.5x
Primoris ServicesUnited StatesUnited StatesPublicly listed$7.6B$505M$3.4B0.6x
Road King Expressway InternationalChinaShenzhenPrivate--$1B-
Last FYEV/RevenueEV/EBITDA
RevenueEBITDALast FYLTM2027ELast FYLTM2027E
Ventia$4.3B$386M0.9x0.9x9.7x9.5x
Shenzhen Expressway Corp$1.4B$735M5.6x4.8x10.6x10.3x
Hill & Smith$1.1B$213M2.7x2.5x14.3x11.7x
Primoris Services$7.6B$505M0.6x0.6x8.9x13.7x
Elecnor$4.9B$250M0.4x0.4x8.8x8.0x
Infraestrctura Visble$390M-9.7x---
Atlas Arteria$110M$40M42.9x37.4x117.9x154.5x
Guangdong Expressway$671M$640M8.0x8.1x8.4x9.8x

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Common questions about WestConnex

When was WestConnex founded?WestConnex was founded in 2016.
Where is WestConnex headquartered?WestConnex is headquartered in Sydney, Australia.
Is WestConnex publicly listed?No, WestConnex was acquired by Transurban Group, La Caisse, AustralianSuper and 2 other investors in September 2021.
Who acquired WestConnex?WestConnex was acquired by Transurban Group, La Caisse, AustralianSuper, CPP Investments and Abu Dhabi Investment Authority in September 2021.
How much was WestConnex acquired for?WestConnex was acquired for $21B in September 2021.
What is WestConnex's valuation?WestConnex was last valued at $3.1B in its secondary sale in October 2026.
Who are WestConnex's investors?WestConnex's investors include Transurban Group.
Which companies are comparable to WestConnex?Companies comparable to WestConnex include NorthWestern Roads Group, Ventia, Shenzhen Expressway Corp, Hill & Smith, Primoris Services and Road King Expressway International.

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