Ison Road Extension contract awarded to Decmil

Ison-Road-Extension

ison road, Ison Road Extension, Ison Road Rail Overpass,

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The Ison Road Extension in Victoria is due to be completed in 2026 and will be delivered by Decmil.

Decmil has been awarded the contract to build the 1.3-kilometre, four lane road between the Ison Road Overpass and the Geelong Road Princes freeway interchange.

The Ison Road Extension is set to be completed next year and will eventually cater for more than 29,000 daily journeys to help meet Wyndham West’s growing transport needs.

Together, the Ison Road Extension and Overpass will form the new link between Ison Road and the Princes Freeway at Werribee.

These upgrades will also allow the nearby dangerous and congested level crossing at Galvin Road in Werribee to be closed to traffic once the new connection opens.

The link will also include walking and cycling paths to Geelong Road, boosting local active transport.

Crews have already clocked nearly 150,000 hours building the Ison Road Overpass and completed the road deck late last year. Workers will finish the bridge build and prepare the site for construction on the Ison Road Extension.

The Ison Road Extension is expected to create more than 220 direct and up to 400 indirect jobs during its construction phase.

The $80 million project is jointly funded through the Victorian Government and council, with $60 million from the Victorian Government’s Growth Area Infrastructure Contribution (GAIC) fund.

Works to be completed by Decmil include:

Structures:

  • provision of an overpass over the Geelong-Melbourne rail line
  • bridge girders to span an ultimate 8 tracks, 4 each side of the central pier
  • retaining walls and visual/anti-throw screens
  • on and off structure concrete barriers
  • design and construction of Rail Infrastructure associated with the project.

Roadworks:

  • new four-lane road (two lanes in each direction, with allowance for future six traffic lanes
  • clearing and Grubbing works
  • construction of earthworks formation
  • pavement construction utilising deep strength asphalt pavements
  • median and roadside barriers.

Drainage:

  • stormwater drainage, subsurface drainage,
  • flood mitigation treatments
  • water Sensitive Urban Design and associated infrastructure.

Incidental:

  • proving, relocation and/or protection of Utility Services
  • rail ancillary works including protection or relocation of existing rail infrastructure
  • pavement markings including installation of raised reflective pavement markers
  • installation of Road Furniture (e.g. Signs, Guideposts, removal of fencing etc)
  • landscaping and urban design works
  • public lighting works
  • property Inspections
  • shared user path.

Source: © Copyright State Government of Victoria

Source: Big Build, Copyright © 2025, State Government of Victoria, Australia

Source: Decmil

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