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...

Subscribe to BusinessDesk

Stay informed on business, government and financial developments across New Zealand.

Deeply researched, twice-edited and fact-checked news
Annual subscribers also receive a complimentary subscription to The Wall Street Journal
Personalised email news alerts, plus gift up to 5 stories a month to non-subscribers

You can cancel anytime with two clicks, an email or a phone call.
Find out more.

We are serious about journalism.

Already a Subscriber ? Sign in here.

Name {{ registerForm.errors.get('name') }}

Email address {{ registerForm.errors.get('email') }}

Phone Number {{ registerForm.errors.get('phone') }}

Job Title {{ registerForm.errors.get('title') }}

Password Minimum password length of 8 characters.
Require at least one upper and lowercase, numeric, and special character. {{ registerForm.errors.get('password') }}

Repeat password {{ registerForm.errors.get('password_confirmation') }}

We had trouble validating your card. It's possible your card provider is preventing us from charging the card. Please contact your card provider or customer support.

Credit Card

Cardholder's name

{{ __(plans[index].name) | capitalize }} {{ plans[index].attributes.old_price | currency }} {{ plans[index].price | currency }}

All subscriptions auto renew but are easy to cancel.

I Accept The Terms Of Service

{{ registerForm.errors.get('terms') }}

Tax: {{ taxAmount(selectedPlan) | currency }}

Total Price Including Tax: {{ priceWithTax(selectedPlan) | currency }} {{ selectedPlan.type == 'user' && spark.chargesUsersPerSeat ? '/ '+ spark.seatName : '' }} {{ selectedPlan.type == 'user' && spark.chargesUsersPerTeam ? '/ '+ __('teams.team') : '' }} / {{ __(selectedPlan.interval) | capitalize }}