What |
We're upgrading and naturalising a portion of the Colliers Drain and the Styx Mill Drain. |
|---|---|
Why |
To improve stormwater management, create a healthier waterway, and a better habitat for native plants and wildlife. The naturalised drain will be more resilient and better support the surrounding community and environment. |
Where |
Redbrook Road and Styx Mill Road, Casebrook. |
When |
Monday 2 March 2026 to Friday 11 September 2026. Monday to Friday, 7am to 6pm (weather/site condition dependent). |
Contact |
The contractor is CORDE. Phone 03 318 8320 (press 6 for construction), Monday to Friday, 8am to 5pm or email construction@corde.nz. |
Details
We’re carrying out significant upgrade works to naturalise the Styx Drain. This involves removing the existing timber lining, reshaping the channel, and creating a more natural waterway with native planting throughout the area.
- Removing the existing timber lined drain structure.
- Earthworks and channel reshaping to create a naturalised waterway.
- Adding natural features like rocks, logs and native plantings to create a habitat for birds and aquatic life.
- Replacing the existing Styx drain culvert under Styx Mill Road with a larger structure to improve flood capacity.
- Installing environmental protection measures during construction.
- Extensive native riparian planting along stream banks.
- Construction of a new pathway.
Traffic Impacts:
- Styx Mill Road will have manual traffic control (stop/go) in place from 16 March to 23 March 2026.
- Styx Mill Road will be closed between 23 March and 10 September 2026 to complete the culvert construction.
- Detour routes will be signposted.
- Redbrook Road will be reduced to one lane with temporary traffic lights or a contraflow system from 16 March to 1 May 2026.
- Heavy vehicles will use Redbrook Road and Styx Mill Road to access the work site.
Please follow the temporary 30km/h speed limit in place to keep everyone safe.
Information for residents and neighbours:
- You may see us on site completing some enabling works before the project starts.
- Access to properties will be maintained at all times.
- We're maintaining pedestrian and cyclist access where possible.
- There will be increased construction noise and vibration at times, particularly during earthworks and culvert replacement, and we will do our best to keep this to a minimum.
- Please look out for CORDE staff and follow the signage on site. If you need direction, please approach a staff member who will be able to assist.
We know this work can be disruptive, and we appreciate your co-operation and understanding.
Ngā mihi nui, thanks for your patience while we upgrade the Styx Drain.
Please advise us via the contact information above if you have any specific property requirements e.g. medical visits, home help, large vehicle deliveries, or any planned works.
The work area is highlighted in blue, the new pathway is highlighted in green, and the road closure is highlighted in red.
Noise
There may be increased noise, dust and vibrations during work but it shouldn’t impact on your power, water, gas or phone services.
Safety
Safety is our biggest priority so please keep children and pets away from worksites.
Bins
Please put your bins out as usual before 6am on your collection day. Our crew will move and return them if needed.
