Omaha Drive and Boat Ramp Stormwater Upgrade

NZ
Auckland Council
2024

Abergeldie was engaged by Auckland Council Healthy Waters to deliver the Omaha Drive and Boat Ramp Stormwater Upgrade, which involved constructing stormwater infrastructure adjacent to the boat ramp. The upgraded system enhances stormwater capacity and resilience, improving flood management by effectively capturing and conveying runoff and overcoming the limitations of the previous soak hole-based system. These improvements reduce water stagnation, minimise environmental degradation, and ensure long-term sustainability.

Scope of works 

The scope of works involved: 

  • Upgrading and realigning the stormwater network along Omaha Drive and within Omaha Boat Ramp Reserve.
  • Construction of a new outfall and wingwall, recessed into the existing gabion wall. 
  • Construction of inlet structures including megapits and a street catchpit.
  • Traffic management. 
  • Reinstatement works.

Efficient project delivery to ensure minimal traffic disruption

Managing traffic at the busy boat ramp was a key challenge, particularly during the summer weekends and holidays when overflow parking impacted Omaha Road. To minimise disruption, the team implemented an efficient construction strategy aimed at reducing project duration and traffic impact.

By deploying three drain-laying crews and a dedicated reinstatement crew, the team expedited works and successfully completed the project weeks ahead of schedule. This early delivery meant the boat ramp was back in full swing during the peak holiday period, improving locals' and visitors' parking and boat trailer access.

Navigating multiple utility services nearby to excavation works

The project’s location required careful management of multiple utility services, with excavation works that required precision and ongoing monitoring to prevent damage and ensure smooth progress. The team employed hydro excavation in high-risk areas, reducing the chance of accidents or service disruptions. Regular coordination with Auckland Transport and open communication with neighbours helped address concerns and maintain strong stakeholder relationships throughout the project.

Commitment to social procurement and local engagement

The team prioritised social procurement throughout the project, with 50% of the workforce identifying as Māori and 80% Auckland locals, with 12% from the Rodney district. This approach not only supported local employment but also strengthened the regional economy. All subcontractors engaged were also locally owned.