Tunnel Archives - CJC

West Gate Tunnel

Witney Jimenez — Mon, 15 Dec 2025 06:32:49 +0000

A Full-Circle Moment on One of Victoria’s Biggest Projects

More than 26 years ago, Colin Calder, Pushpa Nadanapatham, Michael Eager and Van Bardzamian worked together in Melbourne on the original Western Link (CityLink) project; the last major corridor linking Melbourne’s west to the CBD and north. Two decades later, the team has reunited at CJC, returning once again to the very same transport spine they helped shape in the 1990s.

Now, Colin and team members across CJC, have delivered the next generation of that network: the West Gate Tunnel project, one of the most complex infrastructure undertakings in Victoria’s history.

Strengthening a City-Shaping Project

The West Gate Tunnel will transform how Melbourne moves, providing a vital second river crossing, easing pressure on the West Gate Bridge, and removing 9,000 trucks a day from inner-west streets. With twin tunnels, major freeway upgrades, and a new elevated roadway above Footscray Road, it is a once-in-a-generation upgrade to the state’s transport network.

CJC was deeply embedded across the project, delivering a blend of project leadership, commercial strength, and construction oversight on behalf of Transurban. Our team managed key interfaces, supported milestone delivery, led contract and commercial processes, and provided on-the-ground supervision across complex surface works and bridge packages.

This included coordinating construction on Melbourne’s busiest traffic corridors, overseeing major steel erection activities, managing stakeholder engagement, and driving the Completion Obligations process across a multi-party PPP environment.

Did You Know?

6.8 km twin tunnels beneath Yarraville.
9,000 trucks removed from residential streets every day.
46,000 tonnes of steel used across the bridges and elevated structures.
450 tonnes this individual girder was the project’s heaviest lift. The largest girder was 95 m.
17 km of continuous upgraded transport corridors.

CJC Expertise

Project Delivery & Construction Management

Commercial & Contract Management

Interface & Stakeholder Management

Quality Assurance & Site Supervision

Risk, Compliance & Performance Management

Contract Administration & Technical Advisory

GUIDING YOUR PROJECTS TO SUCCESS WITH DECADES OF EXPERIENCE

Our Experts, exceptional results

Combining decades of experience to deliver exceptional project management & construction solutions, ensuring your projects are completed on time, within budget and to the highest standards of quality & safety.

Colin Calder

Group Managing Director

Michael Papadopoulos

General Manager - Commercial

Paul Boyes

Commercial Manager

Matthew Kehoe

General Manager - Digital Construction

Brad Gerbhardt

State Lead - VIC & SA

Manoj Chintalapati

Document Controller

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Sydney Metro West – Central Tunnelling Package

SEOSpecialist — Thu, 13 Nov 2025 00:37:13 +0000

Overview

Sydney Metro West includes the construction of twin 11-kilometre metro railway TBM tunnels from The Bays to Sydney Olympic Park and excavation and civil works for five new stations at The Bays, Five Dock, Burwood North, North Strathfield and Sydney Olympic Park.

The project is valued at $2 billion.

CJC’s Role

CJC was engaged for project management looking after all tunnelling work, excavation, and civil works for The Bays Station.

GUIDING YOUR PROJECTS TO SUCCESS WITH DECADES OF EXPERIENCE

Our Experts, exceptional results

Rachael Oertel

Senior Project Engineer

Dan Taylor

Project Manager

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Sydney Metro West – Eastern Tunneling Package

SEOSpecialist — Thu, 13 Nov 2025 00:18:56 +0000

Overview

Sydney Metro West works is across three key packages to construct the civil tunnels and shafts of the metro. The Eastern Tunnelling Project is the section from The Bays to Hunter Street CBD, with the line running through Pyrmont. It also includes the construction of the station boxes at Pyrmont and Hunter Street in Sydney’s CBD.

The project is valued at $1.6 billion.

CJC’s Role

CJC was engaged to provide full project management support for the tender and design phase of the Eastern Tunnelling Project.

GUIDING YOUR PROJECTS TO SUCCESS WITH DECADES OF EXPERIENCE

Our Experts, exceptional results

Dan Taylor

Project Manager

Rachael Oertel

Senior Project Engineer

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West Gate Tunnel Melbourne

SEOSpecialist — Fri, 26 Sep 2025 04:48:06 +0000

Overview

The West Gate Tunnel Project will deliver a vital alternative to the West Gate Bridge, providing a much needed second river crossing, quicker and safer journeys and remove thousands of trucks from residential streets.

CJC’s role encompasses several key roles and responsibilities as part of the Surface Works Delivery including Senior Delivery Director, Commercial, Project Management and Subject Matter Experts (SME) services, all integrating seamlessly within the Client’s Team.

CJC’s Role:

As subject matter experts (SMEs), CJC offers expertise in various domains, including steel fabrication and erection, precast fabrication and erection, specialist bridge erection, heavy lift reviews, programme reviews and analysis, as well as road opening strategy and delivery.

Our Commercial Team is involved in the day-to-day commercial management of the Project across all site and state issues. They are also responsible for providing commercial strategies from project delivery to completion.

Our responsibilities across the delivery of the West Gate Tunnel Project encompasses; collaboration with Contractor’s Management Team to meet project deliverables, managing compliance and progress of construction, liaising with State Departments, developing, and implementing road opening strategies, and facilitating the handover of assets to the Clients’ Operations Team.

GUIDING YOUR PROJECTS TO SUCCESS WITH DECADES OF EXPERIENCE

Our Experts, exceptional results

Colin Calder

Group Director

Michael Papadopoulos

General Manager - CJC Commercial Services

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Western Harbour Tunnel and Beaches Link

SEOSpecialist — Thu, 25 Sep 2025 06:54:31 +0000

Overview

The Western Harbour Tunnel will connect to WestConnex at the Rozelle Interchange, cross under Sydney Harbour between the Birchgrove and Waverton areas and connect with the Warringah Freeway at North Sydney. As part of the project, the Warringah Freeway Upgrade will make the road safer and more efficient.

This project is valued at $12.5 billion.

CJC’s Role

CJC was engaged by Roads and Maritime Services (now Transport for NSW) to undertake a constructability assessment for the development of the Reference Design for surface and structures works. This involved working closely with the RMS Project Team to develop the design, and input into cost estimates, programmes, risk assessments and the environmental impact statement.

GUIDING YOUR PROJECTS TO SUCCESS WITH DECADES OF EXPERIENCE

Our Experts, exceptional results

Craig Stoddart

Director - CJC Design & Constructability

Craig Murray

Tenders and Compliance Manager

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Mascot Tunnels Mechanical and Electrical (M&E) Upgrade

Jaweria Saeed — Tue, 05 Nov 2024 06:25:00 +0000

Scope

RMS (now TfNSW) upgraded the existing electrical supply and utilities within the Mascot Tunnel complex along General Holmes Drive, underneath the Sydney Airport north-south runway and taxiways. The upgrade consists of works on both eastbound and westbound tunnels.

RMS engaged CJC to undertake a constructability assessment on three concept design options for the upgrade of electrical components and utilities within the tunnels under Sydney Airport runways at Mascot.

CJC role

The constructability assessment included developing detailed construction method statements, construction staging, a construction program and traffic management measures. Three design options were provided and assessed including:

Directly replacing/upgrading the existing electrical components and other utilities.
Constructing two new substations on the eastern and western side of the tunnel along with the upgrade of other utilities.
Constructing a single substation on the western side of the tunnel, along with the upgrade of other utilities.

Guiding Your Projects to Success with Decades of Experience

Our Experts, exceptional results

Combining Decades of Experience to Deliver Exceptional Project Management & Construction Solutions,  Ensuring Your Projects are Completed on Time, Within Budget and to the Highest Standards of Quality & Safety.

Michael Eager

Managing Director

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M6 Extension Stage 1

Jaweria Saeed — Wed, 21 Aug 2024 06:25:00 +0000

Scope

The M6 Extension Stage 1 project will provide a motorway standard link between the New M5 at Arncliffe and the existing M1 Princes Motorway at Loftus. It will connect St George, Sutherland Shire and the Illawarra regions to the Sydney Motorway network.

The 3.8km section provides the critical link to the major gateways of Sydney Airport and Port Botany, reinforcing the national importance of the new motorway.

The project will also provide an Active Transport Corridor (ATC) for pedestrians and cyclists between Bestic Street and Scarborough Park North, through the existing reserved M6 corridor.

The project will maintain and enhance connectivity to local and regional destinations, including Bicentennial Park, C A Redmond Fields and areas of open space around Muddy Creek.

CJC role

CJC was engaged to provide constructability and utilities advice for the tender design before issue to the preferred tender teams. Further advice was provided to cost estimators and construction programmers.

Have a look at the interactive map on the Transport for NSW page.

GUIDING YOUR PROJECTS TO SUCCESS WITH DECADES OF EXPERIENCE

Our Experts, exceptional results

Craig Stoddart

Principal | Project Manager

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Australia Avenue & Homebush Bay Drive Intersection Upgrade

Jaweria Saeed — Mon, 29 Jun 2020 06:24:00 +0000

Scope

Transport for NSW (TfNSW) is proposing to upgrade the intersection of Australia Avenue, Homebush Bay Drive and Underwood Road. This roundabout is one of the four gateway intersections providing access between the arterial road network and the Sydney Olympic Park precinct.

The idea of relocating an existing Homebush Bay Drive pier was proposed to TfNSW. CJC undertook a feasibility assessment of the pier relocation, including the development of mark-up drawings for TfNSW Bridge Branch.

CJC Role

CJC Management was initially engaged by Transport for NSW (TfNSW) to undertake a constructability assessment of four proposed options at the strategic design stage. The four options were two tunnel underpass upgrades, a signalised intersection at-grade upgrade and a diverging diamond at-grade upgrade. The scope of the assessment included preparing staging drawings, developing a construction method statement (CMS), undertaking a utilities impact assessment, presenting the outcomes of the assessment at a constructability options workshop, and preparing a report to record the outcomes of the options assessment.

CJC was then engaged to undertake an options assessment of twelve options, including those four options from the original options assessment. The scope included the development of an options matrix and facilitation of a constructability and health and safety in design (HSiD) workshop.

CJC presented as a Constructability Subject Matter Expert at Value Management Workshops in determining the chosen Diverging Diamond Interchange design out three finalised options.

GUIDING YOUR PROJECTS TO SUCCESS WITH DECADES OF EXPERIENCE

Our Experts, exceptional results

Craig Stoddart

Principal | Project Manager

Rachael Oertel

Project Engineer

Peter Brown

Senior project Engineer

Florian dieterle

Principal Engineer

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