New Wellington expressways save $173m a year, report finds

Transmission Gully opened in 2022 and cost $1.25 billion. It now saves society $79m a year, a new report finds. (Image: Supplied)

John Anthony

Fri, 19 Sep 2025

Transmission Gully and the Kāpiti Expressways are saving the country $173 million a year through faster, safer and more reliable journeys, a new report says.The Wellington City Council, the Kāpiti Coast District Council and the Porirua City Council, in partnership with Infrastructure New Zealand, commissioned Infometrics to analyse the benefits of Transmission Gully and the Kāpiti Expressways (Mackays to Peka Peka and Peka Peka to Ōtaki).The report said the combined benefit of the new roads brought together travel time savings, reduced cost of...

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