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HW10 Old Pacific Highway Upgrade, Ourimbah, Stage 3

HW10 Old Pacific Highway Upgrade, Ourimbah, Stage 3
HW10 Old Pacific Highway Upgrade, Ourimbah, Stage 3
HW10 Old Pacific Highway Upgrade, Ourimbah, Stage 3
HW10 Old Pacific Highway Upgrade, Ourimbah, Stage 3
HW10 Old Pacific Highway Upgrade, Ourimbah, Stage 3
HW10 Old Pacific Highway Upgrade, Ourimbah, Stage 3
HW10 Old Pacific Highway Upgrade, Ourimbah, Stage 3
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

  1. Stormwater pipe installation
  2. Earthworks (bulk and detailed works)
  3. Clear and grubbing and property adjustments
  4. Service relocation management
  5. Pavements
  6. Bridge substructure
  7. 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

HW10 Old Pacific Highway Upgrade, Ourimbah, Stage 3

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