Neerigen Brook Culvert Replacement

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The Neerigen Brook Culvert built on Carradine Road, Armadale between Albany Highway and Angorra Road is due to be upgraded, as currently the culvert does not perform to handle the volume of water that passes through, underneath the road.

The headwalls to the culverts were constructed many years ago from sandbags with cement mortar between them. With persistent rains last year this mortar has been washed away, resulting in movement of the headwall. This has rendered it unable to adequately retain the soil behind it, allowing water ingress which will cause damage to the road and path network.

The project was initially identified under the asset renewal budget as a like-for-like replacement. However, after inspection by an external Civil Engineering Consultant, it was determined that the existing pipes are undersized and need upgrading with modern technology and materials, resulting in what is now a significant project.

The culvert is located at the direct exit of a major highway (Albany Highway), within very close proximity to Armadale Primary School, and at the trail head of local hiking trails. The works will cut off both major streets which carry local traffic to the main highway.


Road Closures

Onsite mobilisation and pre-works are planned to commence on Monday, 4th December 2023. This stage will not have any impact on vehicular traffic. The site office will be positioned just east of the project site at the west end of Lions Park. Due to the required equipment and resources required for this project, part of the Lions Park carpark will also be closed. It is advised to seek alternative parking during this period.

Demolition and drainage culvert replacement works will be commencing at the start of January 2024. It is anticipated that major works will be completed by late-February 2024, with the primary hours of work being Monday - Friday from 7.00am to 6.00pm. Some weekend work is also expected to be carried out to expedite the works. During this stage, Carradine Road will be closed between Angorra Road and Albany Highway.

The City has planned these works to primarily take place over the school holidays to minimise the impact of the road closure on residents and traffic to/from Armadale Primary School. Whilst the road is closed, detours will be in place as per the Traffic Management Diagram. The public is requested to plan their journey ahead, allow for additional time, and follow on-site detour signage 🐢



Neerigen Brook Culvert Replacement – Traffic Management Diagram

  • Carradine Road will be closed between Angorra Road and Albany Highway; traffic will be detoured via Angorra Road northbound, Henrietta Avenue, Derry Avenue, Carawatha Avenue and Albany Highway.
  • Traffic on Angorra Road southbound wishing to access Albany Highway via Carradine Road will be detoured to Carradine Road northbound, Carawatha Avenue and Albany Highway.
  • Albany Highway eastbound traffic wishing to access Carradine Road will be detoured via Waterwheel Road and Canns Road.
  • Albany Highway westbound traffic wishing to access Carradine Road will be detoured via Albany Highway northbound, Caroline Street, Derry Avenue, Henrietta Avenue and Angorra Road.


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🛣️ Carradine Road has reopened!

Good news! Carradine Road has fully reopened to traffic today, 28 February, as planned. Temporary road markings are in place until Main Roads WA are able to complete the permanent lines. Final works including rock pitching and remedial works will continue for two weeks, followed by site demobilisation and a final clean up.

Please note, Lions Park carpark will continue to house the site office until final remedial works have been completed in March.


The Neerigen Brook Culvert built on Carradine Road, Armadale between Albany Highway and Angorra Road is due to be upgraded, as currently the culvert does not perform to handle the volume of water that passes through, underneath the road.

The headwalls to the culverts were constructed many years ago from sandbags with cement mortar between them. With persistent rains last year this mortar has been washed away, resulting in movement of the headwall. This has rendered it unable to adequately retain the soil behind it, allowing water ingress which will cause damage to the road and path network.

The project was initially identified under the asset renewal budget as a like-for-like replacement. However, after inspection by an external Civil Engineering Consultant, it was determined that the existing pipes are undersized and need upgrading with modern technology and materials, resulting in what is now a significant project.

The culvert is located at the direct exit of a major highway (Albany Highway), within very close proximity to Armadale Primary School, and at the trail head of local hiking trails. The works will cut off both major streets which carry local traffic to the main highway.


Road Closures

Onsite mobilisation and pre-works are planned to commence on Monday, 4th December 2023. This stage will not have any impact on vehicular traffic. The site office will be positioned just east of the project site at the west end of Lions Park. Due to the required equipment and resources required for this project, part of the Lions Park carpark will also be closed. It is advised to seek alternative parking during this period.

Demolition and drainage culvert replacement works will be commencing at the start of January 2024. It is anticipated that major works will be completed by late-February 2024, with the primary hours of work being Monday - Friday from 7.00am to 6.00pm. Some weekend work is also expected to be carried out to expedite the works. During this stage, Carradine Road will be closed between Angorra Road and Albany Highway.

The City has planned these works to primarily take place over the school holidays to minimise the impact of the road closure on residents and traffic to/from Armadale Primary School. Whilst the road is closed, detours will be in place as per the Traffic Management Diagram. The public is requested to plan their journey ahead, allow for additional time, and follow on-site detour signage 🐢



Neerigen Brook Culvert Replacement – Traffic Management Diagram

  • Carradine Road will be closed between Angorra Road and Albany Highway; traffic will be detoured via Angorra Road northbound, Henrietta Avenue, Derry Avenue, Carawatha Avenue and Albany Highway.
  • Traffic on Angorra Road southbound wishing to access Albany Highway via Carradine Road will be detoured to Carradine Road northbound, Carawatha Avenue and Albany Highway.
  • Albany Highway eastbound traffic wishing to access Carradine Road will be detoured via Waterwheel Road and Canns Road.
  • Albany Highway westbound traffic wishing to access Carradine Road will be detoured via Albany Highway northbound, Caroline Street, Derry Avenue, Henrietta Avenue and Angorra Road.


--

🛣️ Carradine Road has reopened!

Good news! Carradine Road has fully reopened to traffic today, 28 February, as planned. Temporary road markings are in place until Main Roads WA are able to complete the permanent lines. Final works including rock pitching and remedial works will continue for two weeks, followed by site demobilisation and a final clean up.

Please note, Lions Park carpark will continue to house the site office until final remedial works have been completed in March.


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Page last updated: 28 Feb 2024, 06:21 PM