Mamre Road Upgrade – Stage 1

Fast facts

About

Seymour Whyte is upgrading a section of Western Sydney’s Mamre Road as part of a contract awarded by Transport for NSW (TfNSW). This is a crucial element of the Mamre Road Upgrade Stage 1 project, which is integral to the Western Sydney Priority Growth Area initiative. It aims to reduce congestion, improve safety and travel times, and support future economic and residential growth.

The project involves upgrading a 3.8km section of Mamre Road between the M4 Motorway at St Clair and Erskine Park Road in Erskine Park. The current two-lane unseparated road will be transformed into a four-lane road with a large central median, allowing for future expansion to six lanes if traffic demand increases. Our scope of work includes:

• Upgrading three major intersections
• Constructing two large structural culverts and extensive drainage systems
• Building a noise wall
• Major utility relocation works

Social impact

Scheduled for completion in 2028, the project is dedicated to fostering social inclusion. It aims to allocate at least 1.5% of the contract value towards capability and capacity building for First Nations People and businesses.

Commitment to environmental sustainability

Seymour Whyte is dedicated to incorporating environmental sustainability initiatives into the project:

• Reducing excess material removal by approximately 45,000 tonnes and minimising the importation of material from external quarries by the same volume.
• Using reclaimed asphalt pavement and site-won excavated materials to promote circular economy principles.
• Reusing traffic control hardware, such as concrete barriers and solar-powered street lighting, from Seymour Whyte’s recently completed motorway projects.
• Utilising renewable energy sources for lighting.
• Reusing cleared vegetation.
• Encouraging active transport through a new shared path.

EPL – environmental monitoring reports

• Pollution Incident Response Management Plan (PIRMP)
• Environmental Protection Licence
• Project Community Information  
• Premise Map
• Pollution Monitoring Data