Mulgoa Road / Castlereagh Road corridor upgrade

The Australian and NSW Governments are planning to widen and upgrade Mulgoa Road / Castlereagh Road to support current and future traffic demands and expected growth in the area. This includes $100 million to fast-track the first stage of the corridor upgrade between Jeanette Street, Regentville and Blaikie Road, Jamisontown.

Project information

Roads and Maritime Services is upgrading 6.5 kilometres of the Mulgoa Road / Castlereagh Road corridor between Glenmore Parkway, Glenmore Park and Andrews Road, Penrith. Mulgoa Road is a State arterial road and a main access route from Penrith to the M4 Motorway.

The Mulgoa Road / Castlereagh Road corridor connects Penrith’s Local Government Area, including its central business district, with other parts of greater Sydney. The improved road will improve road safety and reduce the congestion and traffic delays currently experienced.

The corridor carries significant traffic volumes of up to 3800 vehicles per hour during morning and afternoon peak periods.

There are a number of key developments served by Mulgoa Road / Castlereagh Road that have increased population, employment and traffic congestion in the area. These include Penrith Panthers Entertainment precinct, Penrith Station, Riverlink precinct, Penrith Stadium, Penrith Lakes and the Penrith Homemaker Centre, as well as the new urban land releases at Glenmore Park and Thornton.

The Mulgoa Road / Castlereagh Road corridor has been divided into five sections for planning and delivery.

  • Mulgoa Road, Penrith – Union Road to Museum Drive including Railway Bridge (construction started in December 2018)
  • Mulgoa Road, Jamisontown – Jeanette Street to Blaikie Road including M4 Motorway (construction planned to begin in 2020)
  • Mulgoa Road, Glenmore Park – Glenmore Parkway to Jeanette Street (pre-design, short term upgrade)
  • Castlereagh Road, Penrith – Museum Drive to Coreen Avenue (pre-design, short-term upgrade)
  • Castlereagh Road, Penrith Lakes – Lugard Street to north of Andrews Road (pre-design, short-term upgrade)
  • Mulgoa Road, Penrith/Jamisontown – Blaikie Road to Union Road (pre-design, medium-term upgrade)
  • Castlereagh Road, North Penrith – Coreen Avenue to Lugard Street (pre-design, long-term upgrade.

The preferred option would:

  • improve road capacity to cater to population and employment growth
  • manage congestion and delays along Mulgoa Road / Castlereagh Road during peak periods
  • reduce travel times and transport costs
  • improve road safety for all users
  • facilitate the movement of goods and trucks
  • create better access to public transport
  • provide safe and effective pedestrian and cycling infrastructure
  • improve urban design and visual aspects of the road corridor.

The preferred option includes:

  • three lanes in each direction
  • upgraded intersections – including traffic light intersections at Andrews Road, Coreen Avenue and Glenmore Parkway
  • bus priority at intersections
  • a separated path for pedestrians and cyclists on the eastern side
  • a footpath on the western side
  • landscaping along the corridor.

View or download the Mulgoa Road / Castlereagh Road corridor map.

Project documents

Community updates

Show filesHide files
File Title Size
August 2018 community update

Mulgoa Road, Jamisontown upgrade – have your say on review of environmental factors.


Project notifications

Show filesHide files
File Title Size
October 2018 project notification

Night and day work on Mulgoa Road from 5 November 2018.

August 2018 project notification

Night and day work on Mulgoa Road from 3 September to 29 September 2018.

April 2018 project notification

Night and day work -Mulgoa Road from April to June 2018.



Project map.

Project map

View or download the project map.


Corridor map

Corridor map

View or download the corridor map (JPG, 253Kb).

Contact us

For further information about this project contact:

Phone: 1800 733 084 (business hours)


Share this page: