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:

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

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.

CJC was engaged by RMS (now TfNSW) in the role of Project Manager. Our role was responsible for managing the construction, commissioning and integration of the Intelligent Transport System (ITS) network for the Smart Motorway. Tasks included construction management of site activities, assessment of claims and variations and liaison with stakeholders on the testing and commissioning of the ITS network.

CJC was engaged to undertake a peer review of the reference design and program as well as provide expert bridge construction advice.

RMS (now TfNSW) engaged CJC to undertake a peer review of the Sydney Gateway master program. The scope of the review included:

1. General review of the functionality and suitability of the program for the planning approval and procurement phase/s of the project.
2. General review of assumptions made for the program basis.
3. Detailed review of the construction methods, durations and sequence that form the level 3 activities and, in particular, the bridge structure components, with a focus on elements of higher program risk.

CJC was engaged to review the constructability of this design solution and conduct a Constructability and Health and Safety in Design (HSiD) Workshop. This included assessing the methodology chosen to complete the work which requires access underneath the bridge.

CJC was also engaged to undertake a reference design for the access system of a suspended platform and provide advice to TfNSW on the platform procurement.

RMS engaged CJC to undertake an initial Constructability and Risk Workshop. The purpose of the workshop was to discuss the likely construction process with the RMS project team members, key project personnel and stakeholders, as well as identifying constructability issues and opportunities.

The initial Constructability and Risk Workshop focused on the installation works and did not consider the off-site manufacture or transport of components to Australia.

CJC prepared a Constructability and Risk Workshop Report outlining the outcomes of the initial workshop. This advice is to be considered in further developing/progressing the project.

Sydney Metro recognised the significant risks during the proposed possessions, when erection of the bridge was planned over the intercity railway lines. CJC was engaged during the construction phase to provide a peer review of the construction methodology and associated temporary works required to erect the bridge. In addition, our team provided on-site supervision and support for Sydney Metro during possessions.

CJC worked collaboratively with Sydney Metro and Laing O Rourke to review all drawings, methodology and program, providing advice on risk mitigation measures while making suggestions to improve the possession program. CJC also visited the fabrication workshop during trial assembly and provided technical advice to Sydney Metro regarding the 130m long bridge.