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SH1 North Cape to Bluff on 50MAX


A significant breakthrough has been achieved for freight efficiency with the opening of the Whirokino Trestle bridge on State Highway 1 in Horowhenua to 50MAX. 

New Zealand Transport Agency Freight Director Harry Wilson says the restriction on the bridge south of Foxton was lifted after an extensive engineering assessment.  “This is excellent news for 50MAX operators and local communities who stand to reap the benefits,” says Mr Wilson.  He says the 1100 metre reinforced concrete bridge which runs across the Manawatu flood plain was the last 50MAX restricted bridge along State Highway 1, meaning the whole length of the country from North Cape to the Bluff is now 50MAX compatible. 

Having the Whirokino Trestle freed up for 50MAX traffic is going to be a significant time saver for 50MAX operators and provide major efficiency gains as it will remove the need to divert these trucks via Shannon/ Palmerston North.  Mr Wilson says the lifting of the restriction applies only to 50MAX, other High Productivity Motor Vehicles (HPMVs) will need to continue to use the route specified on their permits.

Meanwhile, the number of 50MAX permits continues to rise.  As at 1 October, a total of 1843 permits were issued – less than a year after the permits were introduced.  Mr Wilson says 50MAX trucks have the same high safety standards that are required of other high productivity motor vehicles (including increased resistance to roll over and the inclusion of electronic braking systems), meaning they are trucks that are not only more efficient, but also safer.  

He welcomed the fact that many operators are investing in even more safety measures, such as speed limiting, GPS monitoring, weight load cells and Electronic Stability Control meaning they are trucks that are not only more efficient, but also safer.  


For more information please contact:

Janette Williams
Senior Advisor - Freight Portfolio
Communications and Engagement
Hamilton Regional Office

T: 07 958 7238
M: 027 440 1226