Progress through June
Despite the wet weather, the Southern Corridor Improvements Team has made steady progress over the last month. Work has included pavement construction, bridge upgrades, services protections, and various retaining walls in the areas below:
Alfriston Road to the Takanini Interchange:
- Earthworks and drainage installation continued along the southbound shoulder of the motorway.
- Sub-base materials were imported to the median in preparation for the first asphalt layer.
Takanini Interchange to Pahurehure Inlet:
- Drainage installation began along the southbound shoulder of the motorway.
- Vegetation was removed and mulched on the shoulder along the southbound side of the motorway.
- Bulk earthworks continued to shape the area for the new pavement and drainage.
Other Areas:
- On the Papakura Bridge, just north of the railway line, we continued constructing the footings, and poured the northbound and southbound centre piers. Piling work has been completed for the southbound widening.
- Constructed northbound access to the Papakura Bridge structures.
- Work continued to excavate and soil nail at the abutments under bridges crossing the railway line and along the southbound off-ramp towards Spartan Road.
- Work continued on the placement of precast retaining wall panels nearest the Spartan Road Bridge.
- Continued offsite precasting components for retaining walls, noise walls, and bridges.
Work being undertaken in July
Over the next month, we will extend the median work zone north to Hill Road, and continue working in the median and shoulders between Alfriston Road and the Pahurehure Inlet. We will also continue working on the foundations to widen the motorway bridges over the Papakura Stream, and the Kiwi Rail Lines.
In the office, long term planning is underway for future work areas to be established, including works around major utilities such as gas, water and power main lines. Work this month involves:
Hill Road to Takanini Interchange:
- Between Alfriston Road and the Takanini Interchange, drainage work will continue along the southbound shoulder of the motorway. This includes shaping of the new open channels (as known as swales) which will help treat stormwater as it runs off the motorway.
- In the median area between Alfriston Road and the Takanini Interchange, asphalt layers will be going in to form the pavement and new concrete barriers will be constructed.
- Between Hill Road and Alfriston Road, we will begin removing the old median barriers and installing new barriers to create safe work zones.
Takanini Interchange to Pahurehure Inlet:
- Drainage work will continue along the southbound shoulder of the motorway. This includes shaping of the new open channels (as known as swales) which will help treat stormwater as it runs off the motorway.
- Bulk earthworks will continue to shape the area for the new pavement and drainage.
- In the median area, base and asphalt layers will be going in to form the pavement.
Other Areas:
- On the Papakura Bridge, just north of the railway line, substructure work is ongoing.
- At bridges crossing the railway line and along the southbound off-ramp towards Spartan Road, work will continue to excavate and soil nail at the abutments.
- We will continue offsite precasting components for noise walls, retaining walls, and bridges.
- Work will continue on the placement of precast retaining wall panels nearest the Spartan Road Bridge.
- Across the project, long term environmental controls are being installed to maintain water quality during construction work.
It is important that motorists keep to the 80km/h speed limit past our work areas. There will be ongoing truck and project vehicle movements accessing the shoulder and median work sites. Keeping both motorists and our team members as safe as possible is imperative and we need everyone’s help to do this.
As always, we will be doing our best to minimise effects of these works on motorists as much as we can. We thank you for your patience as we work to improve journey reliability and safety along the Southern Corridor.