Heathcote Road Upgrade

Project Overview

The Heathcote Road upgrade is an important project that will help reduce congestion, improve road safety, and provide more reliable journeys for all road users.

Heathcote is a major arterial road connecting Sydney’s southern suburbs to the motorway network in the south-west. It is also a key link for commuters who drive, walk or cycle to Holsworthy Train Station and the Holsworthy Army Barracks.

The NSW Government engaged Ertech to upgrade the 2.2-kilometre section of Heathcote Road between Infantry Parade, Holsworthy and The Avenue, Voyager Point.

The project includes five road bridges including one Super T bridge over an electrified rail and the demolition and replacement of two existing creek bridges. There is also a steel utility bridge over a creek.

Fast Facts

  • ClientTransport for NSW
  • LocationHolsworthy, NSW
  • Year of Completion 2025

Scope of works

Road and Supporting Infrastructure

  • Upgrade Heathcote Road from an undivided road to a divided road comprising 2 lanes through carriageways (eastbound and westbound) between Infantry Parade, Holsworthy and The Avenue, Holsworthy, including road widening to accommodate for an increase to the number of lanes per carriageway in some locations.
  • Install a central median to separate opposing traffic
  • Adjustments to some local roads and access roads
    Construct a noise wall at The Avenue
  • Construct a soil nail retaining wall at The Avenue, including precast concrete fascia panels
  • Install signalised intersections at Heathcote Road/ Macarthur Drive/Access Road intersection and Heathcote Road/The Avenue intersection
  • Construct a concrete shared user path along Heathcote Road
  • Adjust to existing public utilities and install new street lighting and public utilities
  • Property adjustments

Bridge Construction

  • Demolish existing road bridge and utilities/pedestrian bridge at Harris Creek, and construct twin bridges over Harris Creek
  • Construct a new Sydney Water utility bridge over Harris Creek
  • Demolish existing road bridge at Williams Creek and construct twin bridges over Williams Creek
  • Construct railway overbridge for Heathcote Road Liverpool-bound carriageway, including a reinforced soil wall and protection slab over an existing APA high-pressure ethylene gas main. The Rail Overbridge is highly skewed, requiring bulb-T girders. Because of the skew and crossfall, the deck is on a slope, which requires reinforcement that is nonstandard.