CMC Group

HW10 Old Pacific Highway Upgrade, Ourimbah, Stage 3

This project included the upgrade of approximately 1.8 km of the Pacific Highway at Ourimbah from south of Ourimbah Street to north of Walmsley Road. This section of the Pacific Highway was a two-lane, two-way carriageway and was reconstructed to a median separated four-lane, two-way road.

Construction involved the reconstruction of signalised intersections at Ourimbah Street, Teralba Street and Walmsley Road, a shared pedestrian and cycle path on the western side of the highway, demolition of two bridges and construction of three new bridges across Cut Rock Creek.

SCOPE

The scope of works included roadworks, utility relocations, bridge demolition, bridge construction, retaining wall construction and soft soil ground improvement works (controlled modulus columns). The project is directly adjacent to residents and businesses, community liaison and developing strong relationships was key to a successful project.

Major quantities include

Sensitive clearing and grubbing and 32 property resumptions and affected adjustments
Major Service Relocations – Telstra, Optus, TPG, NBN, Jemena, HV/LV Underground
43,000m³ imported fill
12,500m ground improvement columns
25,000t cement treated gravels
16,000t asphalt
3,200m drainage culverts (Ø375 to Ø1350 mm)
3 x concrete T-girder bridges

At the peak of construction, the following civil works crews worked concurrently

Stormwater pipe installation
Earthworks (bulk and detailed works)
Clear and grubbing and property adjustments
Service relocation management
Pavements
Bridge substructure
Environmental maintenance of sedimentation basins

The key benefits of this upgrade include

Construction of 3 new bridges
Demolition of an existing bridge
Relocation of major services including Telstra, Optus, Gas, NBN, Power and Water assets
Management of soft soils issues including the installation of over 200 ground improvement columns
Detailed traffic management planning to ensure two-way traffic access at all times along this section of highway
Planting of over 140,000 trees and shrubs

Ourimbah NSW

45M

Roads and Maritime Services

February 2016 - May 2018

Projects

HW10 Old Pacific Highway Upgrade, Ourimbah, Stage 3

SCOPE

Major quantities include

At the peak of construction, the following civil works crews worked concurrently

The key benefits of this upgrade include

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