The Kenepuru Interchange connects Porirua city centre and Tawa with the Transmission Gully motorway, via a new link road which crosses the existing SH1 and North Island Main Trunk railway line at Kenepuru.
A new roundabout connects the link road with Kenepuru Drive. The Kenepuru Interchange has both north and southbound on-ramps to the new motorway. It also has a southbound off-ramp for motorists traveling from Kāpiti or the Hutt Valley (via SH58) to Porirua city.
Motorists travelling northbound from Wellington to Porirua City Centre or Plimmerton, should continue to use their usual route – such as the off-ramp at Mungavin Avenue.
Check out the animated video below to see the new Kenepuru Interchange in action.
As we move closer to opening the new motorway, and the interchanges start to take shape, we’ll take a closer look at each. A spotlight on Kenepuru is the first in a series of information articles to give road users details on how the interchanges will work.
Finishing works have begun in the Kenepuru and Linden areas; one of the most complex sections of the Transmission Gully motorway project.
In this area the construction team has been challenged to build a new motorway around an older one while keeping State Highway 1 open to traffic. It’s also involved working very close to suburban streets and local businesses. The large northbound bridge to access the new motorway, Kenepuru link road bridge and new Collins Avenue overbridge are all on track and in the final stages of construction.
Preparatory works for the Kenepuru Drive roundabout are underway where we’re building up ground levels to meet up and tie into the local road. This work will start to interface with local road users later in the year, and will involve some temporary traffic management measures. When we are close to starting these works, we’ll update the community on the plans to keep local traffic moving as smoothly as possible. Pedestrians will be provided for as well. Works in the area will be ongoing until the end of the year, to keep us on schedule to open the new motorway in 2020.
Here’s how the different bridges and roundabouts work together to form the new Kenepuru Interchange.
Northbound traffic on Kenepuru Drive will have two choices when they reach the new Kenepuru Drive roundabout.
Southbound traffic on Kenepuru Drive will have two choices when they reach the new Kenepuru Drive roundabout.
Southbound traffic on Transmission Gully motorway can take the off-ramp to the Kenepuru Interchange to connect with Kenepuru Drive for Linden, Tawa or Porirua connections.