SH16 Northwestern Motorway Improvements: St Lukes Road to Westgate

The Northwestern Motorway (SH16) is a key part of the Western Ring Route - one of seven Roads of National Significance that the Government is prioritising to reduce congestion, improve safety and support economic growth.

A range of improvements is planned for SH16 between St Lukes and Westgate that will support this growth as well as catering to the changes in traffic flow expected once the Western Ring Route is completed.

The improvements are focused on improving safety, supporting economic growth and upgrading provision for walking, cycling and public transport.

As part of completing the Western Ring Route, the proposed improvements will:

• Support sustainable growth and development of business and residential centres adjacent to SH16
• Provide supporting infrastructure to enable completion of the Western Ring Route
• Improve the capacity, efficiency, safety and reliability of SH16
• Improve freight movements through the west of Auckland
• Improve public transport along SH16
• Support wider traffic management techniques including Travel Demand Management that will help sustain the benefits of the project

In collaboration with Waitakere and Auckland City Councils, NZTA is proposing to:

• Add lanes to the motorway to increase capacity
• Raise the causeway and the adjacent cycleway to reduce flooding
• Widen and improve interchanges
• Extend the cycleway further west
• Construct new bus priority lanes on the motorway shoulders
• Improve access across the motorway for pedestrians and cyclists