Colo Heights Bridge, Upper Colo

Project Summary:

Menai Civil was engaged by Hawkesbury City Council to reconstruct the ageing Upper Colo Bridge at Colo Heights, replacing the existing damaged structure with a stronger and more durable crossing for the local community. The original timber bridge, recognised as a heritage item, was carefully deconstructed, with salvaged timber elements repurposed into street furniture and public artworks to preserve the bridge’s historical value in a meaningful and lasting way.

Delivered within a flood-prone riverbank environment, the project required careful planning, temporary works, environmental controls and ongoing adaptation to severe weather events. Despite repeated flooding impacts throughout construction, Menai Civil successfully delivered the bridgeworks contract, completing the new bridge structure, approach roads and associated civil works to restore safe and reliable access for the Upper Colo community.

Scope of Works:

Demolition and reconstruction of existing damaged Upper Colo Bridge
Site preparation and temporary traffic controls
Installation of environmental controls
Tree and vegetation removal and site clearing
Bulk excavation and earthworks
Installation of coffer dams and temp work platforms
Demolition of existing structure
Installation of piles, pile caps and abutments
Removal of temporary works
Installation of bridge deck
Construction of approach roads
Signage and line marking

Project Outcomes:

Delivered a stronger and more durable bridge structure supported by driven precast piles.
Improved structural performance through the construction of FRP abutments, pile caps, columns, headstocks and deck works.
Installed precast pretensioned girders to support the new bridge span and long-term serviceability of the crossing.
Constructed new pavement approaches to provide a smooth and reliable connection to the upgraded bridge.