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SH16 Brigham Creek to Waimauku speed consultation

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Project Introduction

The NZ Transport Agency is seeking public input on its proposal to set a permanent new speed limits on State Highway 16 from Brigham Creek to Waimauku.

  • Project type

    Speed review

Project updates


We are committed to addressing safety concerns on State Highway 16 Brigham Creek to Waimauku as the area continues to grow. There’s been a high number of crashes on State Highway 16 between Brigham Creek and Waimauku, and locals have told us that speeds on the road feel too high to be safe. We want to make sure that speeds are safe and right for this road, so we’re proposing speed limit changes.

Speed increases both the likelihood of crashes and the severity of crashes when they happen. A small reduction in speed can make a big difference, especially when cyclists or pedestrians are involved. Most crashes are caused by a number of factors, but even when it’s not the cause of a crash, speed is most likely to determine whether anyone is killed, injured, or walks away unharmed.

While reviewing current speed limits is something we can do now to address safety concerns, we are also making State Highway 16 safer with improvements to the road that we will deliver in stages.

Find out more about the improvements

When we investigate changes to speed limits on a road, we ask communities for feedback on speed on those roads to help us fully understand the issues. Over the last three years we have heard people’s feedback on current speeds on SH16 Brigham Creek to Waimauku. We’ve used this feedback alongside our technical analysis to determine the safe and appropriate speeds for this stretch of road. In October and November 2019 we formally consulted on proposed changes to the current speed limits on this section of State Highway 16 - formal consultation on the new speed limit proposals is required under the Land Transport Rule: Setting of Speed Limits (2017). Consultation has now closed and we will publish our decision on the safe and appropriate speeds on our website in due course.

Read more about the community engagement and people’s feedback [PDF, 158 KB]

What we have heard

We have talked to the community, council, the local police, road user and freight groups and local businesses about the current speed limits between Brigham Creek and Waimauku, and they have all raised concerns that the current speeds feel too high to be safe. People felt lower speeds were justified on this stretch of SH16.

What we know

SH16 is a rural state highway that is continually changing, with additional growth and housing in the wider area. SH16 provides a key connection for the north-west.

Over 30,000 vehicles a day use the route between Brigham Creek and Kumeu, and 15,000 vehicles a day between Huapai and Waimauku.

This road is also part of an alternative route to State Highway 1 (SH1) between Wellsford and Auckland and used by long-distance travelers driving between the Northland Region and Auckland or beyond.

Between 2009 and 2018, there were 449 crashes on this stretch of road. 7 people were killed and 57 people were seriously injured.

The proposed changes to speed limits would have minimal impact on travel time. Based on current average speeds, if we were to reduce the speed limit as proposed below, we estimate it will only take you 20 seconds more to travel this stretch of road.

What we’re proposing

Location Current speed limit Proposed new speed limit Current mean operating speed
SH16 Kumeu and Huapai 60km/h  50km/h 50-54km/h
Reduce the speed to 50km/h for the 60km/h section from 50m south-east of Old Railway Road to 20m west of Station Road.
SH16 Huapai 60km/h No change 50-54km/h*
No change to speed limit from 20m west of Station Road to 20m west of Station Road to 200m north-west of Trigg Road.
SH16 Huapai to Waimauku 100km/h 80km/h 80-84km/h
Reduce the speed to 80km/h for the 100km/h section from 200m north-west of Trigg Road to 140m east of Wintour Road.
SH16 Waimauku 70km/h 60km/h 65-69km/h
Reduce the speed to 60km/h for the 70km/h section from 140m east of Wintour Road to 380m west of Solan Drive.

* This represents the mean operating along the Kumeu/Huapai corridor. Speed is higher west of Station Road.

Current and proposed speed limits

brigham creek to waimauku speed review mapb

How speed reviews work

More information about speed and the speed review process is available on the Speed Review Programme webpage.