VIDEO: FIRST LOOK at the Black Hill/Beresfield Interchange – M1 Extension

Project Overview

The M1 Pacific Motorway Extension to Raymond Terrace is a transformative infrastructure project in New South Wales, Australia. It involves the construction of a 15-kilometre, four-lane divided motorway connecting the existing M1 Pacific Motorway at Black Hill (Beresfield) to the upgraded Pacific Highway near Raymond Terrace. This project addresses the final bottleneck between Sydney and Brisbane, removing five traffic-light intersections and bypassing local congestion points at Hexham and Heatherbrae. The extension is part of a broader initiative to improve travel times, safety, and freight efficiency across the east coast corridor.

Jointly funded by the Australian and NSW Governments, the project is part of a $2.1 billion investment that also includes the Hexham Straight Widening. The extension is being delivered through two main construction packages and is expected to open to traffic in 2028.

Project Objectives

• Deliver a high-speed, grade-separated motorway connection between the M1 and the Pacific Highway
• Remove congestion at Hexham and Heatherbrae
• Improve road safety by separating local and through traffic
• Reduce travel times by a minimum of 9 minutes during peak periods
• Support long-term freight efficiency and economic growth in the Hunter and Mid North Coast

History and Planning

Planning for a motorway link north of Black Hill began in 2004. The initial route and concept designs were refined over the following years through extensive community consultation. In 2010, the preferred corridor was announced. Design updates continued through 2018, incorporating community and stakeholder feedback, including concerns about environmental impacts, access, and noise.

The Environmental Impact Statement (EIS) was exhibited from July to August 2021. Fifty-eight submissions were received, covering a range of topics including biodiversity, flooding, traffic impacts, and construction concerns. As a result, several design changes were made to reduce ecological impacts and improve local access.

Timeline of Key Milestones

Construction Packages

Southern Package – Black Hill to Tomago

Delivered by a joint venture between John Holland and Gamuda, the southern package covers approximately 10 km of motorway. This section includes the construction of three interchanges at Black Hill, Tarro, and Tomago, as well as the 2.6 km viaduct over the Hunter River floodplain. The area presents engineering challenges due to soft soils and flood risks, requiring deep piling and elevated structures.

As of early 2025, key works underway include the completion of bridge piers and headstocks, drainage installation, embankment formation, and ongoing deck pours for the viaduct and interchange bridges. The package includes nine new bridge structures and extensive ground improvement works.

Northern Package – Tomago to Raymond Terrace

Seymour Whyte is delivering the 5 km northern package, comprising the Heatherbrae Bypass and Raymond Terrace interchange. Major structures include the Masonite Road overpass, Windeyers Creek bridge, and bridges for ramp connections. The Raymond Terrace interchange will rejoin the new motorway with the Pacific Highway north of Heatherbrae and provide improved access to industrial and residential areas.

By late 2024, the project reached a key milestone with the installation of the first concrete bridge girders and the beginning of deck construction. Landscaping, pavement works, and noise wall installation are progressing along sections of the corridor.

Integration with Hexham Straight Widening

The M1 extension is being delivered in parallel with the Hexham Straight Widening project, which involves expanding a 6 km section of the Pacific Highway from four to six lanes between Sandgate and Hexham Bridge. That section carries over 50,000 vehicles per day and is a key freight route to the Port of Newcastle.

The Hexham Straight project is being delivered by an alliance of Georgiou Group, Daracon Contractors, and SMEC. Construction began in mid-2023 and is expected to finish in 2026. Together, the two projects will streamline traffic flow through the lower Hunter region and improve reliability for local and interstate journeys.

Environmental Protections

The project is subject to strict environmental conditions, including measures to minimise impact on native flora and fauna, preserve water quality, and protect Aboriginal heritage sites. Key strategies include:

• Use of viaducts to avoid sensitive wetland and floodplain areas
• Fauna crossings and fencing to enable safe wildlife movement
• Noise walls near residential areas such as Lenaghans Drive
• Stormwater drainage systems to manage runoff and sediment
• Monitoring programs to track noise, vibration, and air quality

The project team has also implemented species-specific actions, including relocating colonies of the Southern Myotis (fishing bat) prior to bridge works near Hexham.

Community Engagement

Community consultation has been ongoing since the early 2000s. Public feedback has directly influenced project outcomes, including adjustments to interchange locations, local access provisions, and noise mitigation strategies. During the EIS consultation period, residents raised concerns about traffic impacts, flooding, and environmental damage, resulting in design refinements.

Transport for NSW maintains a community contact line and project email and continues to publish newsletters and updates through its online portal. Temporary traffic changes and night works are communicated to affected residents with advance notice, and in some cases, noise respite measures are provided.

Traffic and Freight Benefits

• Bypasses five traffic signals between Black Hill and Raymond Terrace
• Removes up to 25,000 vehicles daily from existing local roads
• Enhances travel times for commuters and freight operators
• Improves network redundancy and flood resilience
• Facilitates efficient freight access to the Port of Newcastle

Infrastructure Features

• ITS infrastructure including variable message signs and cameras
• High-capacity road pavement with low-noise surfacing in select areas
• New service roads and overpasses to maintain local connectivity
• Design speed of 110 km/h throughout the new alignment
• Median separation and safety barriers to reduce head-on collisions

Economic Impact

• Supports approximately 2,700 jobs during construction
• Stimulates economic activity in the Hunter and Port Stephens regions
• Provides long-term benefits for freight, tourism and regional growth
• Improves access to employment hubs and industrial precincts

Further Information

Project updates, detailed maps, and construction notices are available at the Transport for NSW project portal. Enquiries can be directed to m1rt@transport.nsw.gov.au.

Last updated: 1 April 2025

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