Dobroyd Point Seawall

Location

Haberfield, NSW

Year

2021

Client

Inner West Council

Enter Building Group was contracted by Inner West Council to upgrade existing seawall. The purpose of the project was to extend the seawall towards the waterside and improve public access to Bay Run in Haberfield. Given the extent of the site, the project was divided into two stages to minimise the disruption to public use of the Bay Run throughout the construction period. The scope of work consisted of:

  • Providing a temporary work platform for machinery near waterway
  • Importing over 1500 tonnes of ballasts and sandstone armour rocks
  • Excavation of toe and restoration to pre-construction profile
  • Supply and installation of sandstone seawall steps
  • Extension of stormwater pipes
  • Soft landscaping, including timber edging

Stage 1 involved construction of 97lm of a new seawall over the existing structure, a new sandstone lookout point, and soft landscaping. Throughout the construction period, Enter Building Group was able to identify an issue with the existing seabed, which was softer than anticipated to withhold the original seawall design. Based on decades of experience in marine construction, Enter Building Group assisted Council and Engineers with value engineering of an alternative seawall design. 

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stage1 pc

Similarly, Stage 2 involved supply and installation of bridging layers and sandstone rock amours over the exiting seawall structure as shown in the progress photos below from left to right. 147lm of the new seawall included a planter box for saltmarsh and sandstone seawall steps. For both stages of work, Enter Building Group had to work around low tides to build a work platform and excavate rock toe. Despite such a limit to work hours, the project was completed on time. 

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The major challenge with Stage 2 was traffic management for local community. In order to minimise the disruption to public use of this area as much as possible, Enter Building Group provided a detour access through carpark for cyclists and pedestrians during the week and this was dismantled at weekends to allow normal public access to the Bay Run. 

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BEFORE
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AFTER

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