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Hill Street Blues

To find the original post, please click here.


We’ve discussed Warkworth’s notorious Hill St intersection previously, but it seems timely to revisit again with the Board of Inquiry underway on the Puhoi – Warkworth toll road and NZTA’s recent press release on the subject:


The NZ Transport Agency says its priority to improve traffic flows in the Warkworth area is to first construct a new highway between Puhoi and Warkworth before it upgrades the community’s Hill Street intersection.

“I acknowledge that many in the community want Hill Street upgraded as soon as possible, but it is important that we have a reliable alternative route in place first for people before we tackle Hill Street,” says the Transport Agency’s State Highway Manager, Tommy Parker.

Mr Parker says upgrading the intersection and the state highway and five local roads that feed into it will be a complex task that will take some time to complete.

“There’s not a lot of room at the intersection and we will need to keep all those roads open during the upgrade. We estimate construction could take two summers to complete and that will mean considerable disruption for everyone – children from the nearby school, residents, local businesses and road users.

“Upgrading Hill Street, either in isolation or ahead of the new highway, will not provide substantial relief from congestion. It makes sense to construct the highway first to help us manage the disruption from that work and divert traffic away from the intersection.”


Before analysing NZTA’s announcement in more detail, here is a map of the current intersection:


And the GIS view:

As you can imagine, the intersection turns into a real bottleneck at peak times, particularly in the summer months.


Traffic from Warkworth village heading to Matakana must turn right at a give way sign, across a lane of queued traffic, giving way to traffic from a number of directions concurrently. Traffic queues across the intersection can often block other traffic movements in other directions. In summary, it is a real mess.


Further down in their press release, NZTA mention a couple of other projects:


Mr Parker says the Transport Agency is working with Auckland Transport – Auckland Council’s transport body – to progress other options including the Matakana Link, which will connect with the new highway and bypass Hill Street to the region’s eastern beaches, the Western Collector in the town and the SH1/McKinney Road intersection south of the township.


Firstly, looking at the Western Collector:

This is an AT sponsored project which is a complete bypass around Hill Street and central Warkworth. It starts at opposite McKinney Road in the south and ends at Hudson Road north of Hill Street. Anyone heading to or from the north on the existing SH1 will certainly use this, reducing pressure on Hill St. A number of intersections that make up the bypass have already been completed, but I can’t find any information via Google on when the missing links will be completed. It is supposed to happen before the Puhoi – Warkworth toll road, however.


Secondly, the Matakana Link is mentioned, crudely highlighted in blue on the map below. At this stage this is unfunded and does not form part of the Puhoi – Warkworth toll road project. However, without it the toll road will be useless for people wanting to travel to or from the Matakana area.


As currently scoped, the toll road will join 1.8 km north of the Hill Street intersection. Anyone travelling to Matakana on the new toll road will have to cover an extra 3 km at least to get to Hill Street, compared to using the existing SH1.


So are NZTA right in delaying Hill Street by at least another 10 years? On the one hand, the scale of any new intersection could be reduced because of the Western Collector and the possibility of the Matakana link.


On the other hand, for Warkworth residents this is a long time to wait, so why not start now? Remember also that Warkworth residents won’t directly benefit from the new toll road either, as the fastest route south will still be the existing SH1, so they seem to be getting a rough deal from the announcement.