A few days before Christmas and the NZTA have been busy little beavers, lodging not one but two consent applications for major Auckland projects last week. the Northern Corridor and the East-West Link (despite the council asking them to hold off for just a few more months). With thousands of pages worth of reports in each of the applications plus their supporting documents, perhaps the NZTA were targeting those looking for something to do over the Christmas/New Year period. Due to the volume of information I’m not going into much detail about each of these but you can be sure we will in the new year.
The Northern Corridor is expected to cost around $500 million and is described on the EPA website as comprising of:
- SH1 widened to include extra general traffic lanes in each direction between Upper Harbour Highway (Constellation) and Greville Road;
- A new dual direction busway adjacent to the southbound carriageway shoulder of SH1;
- Northern Busway extended from Constellation Bus Station, further north to Albany Bus Station;
- A new off-road shared-use pedestrian/cycleway adjacent to the southbound carriageway of the Northern busway extension;
- SH18 upgraded to full motorway standard from the Albany Highway interchange to SH1, with a motorway to motorway connection to SH1 (north facing SH1 – SH18 ramps only);
- Direct connection of Paul Matthew Road to Upper Harbour Highway;
- Local road intersection improvements; and
- A new off-road shared-use pedestrian/cycle way initially tracking from Albany Highway along SH18 and up the length of SH1 to Oteha Valley Road.
Unlike the East-West Link further below, there isn’t much in the way of images for the Northern Corridor showing what it will look like. The images do show a couple of important things though, such as that the Constellation Busway Station will get an outbound platform accessed by an over bridge, like Smales Farm and Akoranga. As you can see the Rosedale drawing doesn’t include details about the proposed busway station as mentioned the other day.
While this one shows the proposed bridge that will give direct access from the busway to the Albany Busway station.
Here’s the plan version of that
- A new four lane arterial road between SH20 at the Neilson Street Interchange in Onehunga and the on and off-ramps on SH1 at Mt Wellington Highway;
- SH1 widened in each direction between Mt Wellington Highway and Princes Street to increase capacity to allow connection to the Project. Several bridges will either be upgraded or widened to facilitate this;
- Major upgrades to the Neilson Street Interchange to enable direct access between SH20 and EWL through free flow ramp connections in all directions;
- A full pedestrian and cycling link between Māngere Bridge and Onehunga through to Sylvia Park Town Centre;
- Local road improvements at Galway Street, Captain Springs Road, Hugo Johnston Drive and a new access road for the existing ports; and A grade separated intersection of Great South Road and Sylvia Park Roads to provide improved reliability and future resilience.
- Landscape and recontour the coastal edge of Māngere Inlet to reflect the original foreshore which existed before extensive historic reclamation; and
- Incorporate stormwater treatment wetlands located within new headlands on the foreshore of the Māngere Inlet.
Below are some images of what the East-West Link is meant to look like when finished.
This is the proposal for the Onehunga Interchange looking North and South. Notice in each of them how they show rail in the plan, which is now planned to go over the top of some roads. The also show the replacement walking and cycling bridge which the NZTA have gone very quiet on.
And here’s a shot showing the new road alongside the Mangere Inlet.
The map below shows the entire East-West plan which also includes widening of SH1 and upgrading the Princes St interchange. Click the image for a larger version or go here for the original (8.2MB)
This is a close up of the Onehunga Interchange.
As mentioned we’ll go into more detail about these posts in the new year, in the meantime, let me know if you see anything interesting in the technical documents