National pledges $1.75 billion for Auckland Mill Road project

If re-elected, the National Party plans to begin construction on the first stage of Auckland's Mill Road corridor in late 2028. The party intends to allocate $1.75 billion in Budget 2028 to fund this initial stage, which runs between Manukau and Alfriston.

The project will create a 21.5km, four-lane corridor running alongside State Highway 1 from Manukau to Drury. National also plans to allocate $100 million to progress route protection for stages two and three. Stage one is expected to include a westbound bus lane, three new roundabouts, and new bridges over Cheesman’s Bush and Puhinui Creek.

Transport spokesperson Chris Bishop stated that the roading network has not kept pace with South Auckland's rapid growth. NZTA estimates the project will reduce corridor congestion by 30% and cut journey times by 25%. The benefit-cost ratio is estimated at 3.1 if the road is not tolled, or 2.2 if it is.

The announcement has drawn criticism from NZ First leader Winston Peters, who accused National of "constant plagiary" regarding the policy. Mr Bishop denied the claims, stating he was unaware of the NZ First announcement.

Where reports differ

• One report notes the existing road is unlikely to reach capacity until after 2055, while others focus on congestion reduction estimates

Compiled from reports by NZ Herald, 1News and The Post.