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 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.

CJC was engaged to provide expert advice associated with airfield works integration and aviation requirements. This also includes supporting the design management, transaction management and general project management. CJC is supporting the Dubbo Airport team in preparing tender documentation and will also likely provide on-site support during construction works.

CJC was engaged to provide constructability services in accordance with the PS Specifications. Specifically for Value Management which includes attendance and input into the 20% and 80% design value management workshops. Constructability which is a facilitation of a 20% and 80% design constructability workshops and the preparation of report following each session. This includes a site inspection and the preparation of detailed construction staging drawings/traffic sections at for both design phases. Additionally CJC will also provide a constructability review of the ARUP 20% and 80% design drawing set and produce a high level construction program.