Marshfield Consulting Services

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T2D Constructability Advisory Services

Client

Department for Infrastructure and Transport

Project Overview

The 10.5km section of road between the Torrens and Darlington is the final piece of South Australia’s world-class multi-billion-dollar North-South Corridor (NSC) Program and the key to unlocking Adelaide’s traffic network. This section of the Torrens to Darlington Project is the most complex section of the NSC Program due to ground conditions, unique heritage assets and the social character of the surrounding areas. Around 60% of the Project will be underground tunnels and will result in a free-flowing motorway with 80 km/h posted speed and three lanes in each direction, similar to the existing NSC Program. Once completed, the Project will be the state’s biggest infrastructure project to date and will deliver a 78km non-stop traffic-light-free connection between Gawler and Old Noarlunga. The NSC Program Delivery Office has been established to deliver the Project. This Constructability Advisory Services contract is Project-wide and intended to provide expert support to the NSC PDO during the transaction phase through to award of the two main construction packages.

Scope of Works

Marshfield, as a sub-consultant to Systra Bamser, utilised our DIT and construction experience to assist the Department in the planning, development and procurement of the project and provide key expertise to ensure that constructability issues and opportunities are identified, appropriately addressed, and resolved.  Marshfield’s scope consists of:

  • construction safety assessments
  • cost assessment and efficiency advice.
  • constructible scope definition and opportunities
  • construction methodologies, productivity, and efficiencies
  • scope packaging, staging and interface management
  • land availability and occupation including opportunities for early handback and opening
  • minimising community and stakeholder disruption
  • construction, operation and maintenance costs and efficiencies
  • Assist with the writing of the Constructability Report for the reference design in accordance with DTI master specification PC-PL4
  • Assisted DIT to draft sections of the tender documentation prior to the Request for Tender phase