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Sydney Gateway

Engineering and Technical Opportunities

The Sydney Gateway is a major road interchange between the WestConnex and the airport terminals of Sydney Airport. Construction began in early 2021 and is expected to open in December 2024. The Sydney Gateway will provide a high capacity connection from Sydney Airport and Port Botany to the new Westconnex St Peters Interchange once completed. Sydney Gateway is part of the NSW Government’s vision to complete the missing links in the motorway network, improve traffic flow and reduce travel times.

Sydney Gateway will strengthen Sydney’s position as a global city, by expanding and improving the existing road and freight rail networks. Importantly, Sydney Gateway will provide a new route for around 10,000 trucks a day. This will divert trucks from local streets in Mascot by providing an alternative route, reducing travel times and congestion, and returning local streets to the community.

Project

Sydney Gateway

Client

Coffey/Tetra Tech

Location

Mascot NSW, Australia

Project Highlights

Approach and Innovation

The Sydney Gateway Project will be delivered in three stages;

Stage One will provide a new road connection linking the Sydney motorway network at St Peters Interchange with Sydney Airport’s International Terminal and Qantas Drive. This will include: 

  • St Peters Interchange Connection – a new elevated section of road extending from St Peters interchange to the Botany Rail Line, including an overpass over Canal Road
  • Terminal One Connection – a new section of road connecting Terminal One with St Peters interchange connection, including a bridge over Alexandra Canal and an overpass over the Botany Rail Line
  • Qantas Drive Upgrade and Extension – widening and upgrading Qantas Drive to connect Terminals Two and Three with the St Peters Interchange connection, including a high-level bridge over Alexandra Canal
  • Terminal Links – two new sections of road connecting all three Terminals, including a bridge over Alexandra Canal, and
  • Terminals Two and Three Access – a new elevated viaduct and overpass connecting Terminals Two and Three with the upgraded Qantas Drive.

Stage Two is the Port Botany Rail Duplication, which is being separately delivered by the Australian Rail Track Corporation.

Stage Three is an arterial road connection and flyover to Sydney Airport’s Domestic Terminals, including improvements to existing roads to reduce congestion and improve connectivity to Sydney Airport Domestic Terminals and towards Port Botany. Stage Three will consist of: 

  • A new section of road and an overpass connecting Sydney Airport’s northern lands on either side of the Botany Rail Line (the northern lands access), and
  • A new section of road, including a signalised intersection with the Terminal One connection and a bridge, connecting Sydney Airport’s existing and proposed freight facilities on either side of Alexandra Canal (the freight terminal access).

Value Added to the Project

JDK was engaged in the geotechnical site investigation work under the management of Coffey/Tetra Tech. JDK was able to undertake geotechnical investigation work autonomously alongside site safety and documentation management protocols effectively streamlining the delivery of Stage 2 of the investigative works of the project.