Wellington traffic is gradually easing after State Highway 1 reopened following a fatal crash near Tawa.
One person died after a two-car crash between Tawa and Porirua, which happened around 3.20am on Thursday. There was no indication of other injuries.
Peak hour traffic was ensnared in heavy congestion while the motorway was closed to northbound traffic and reduced to one southbound lane until shortly after 10am.
Witnesses reported gridlock stretching several kilometres from the Porirua on and offramps.
Police confirmed the serious crash unit was investigating the cause of the crash at the scene.
A two-car crash also blocked the right southbound lane of State Highway 1 ahead of Wellington’s Terrace tunnel.
There were no reports of injuries in the crash that happened before the entrance to the tunnel about 7.25am on Thursday morning. It was cleared about 8.45am.
Earlier, southbound traffic was backed up on State Highway 2 extending into Lower Hutt.
Another crash was impeding traffic in the Wellington suburb of Khandallah.
There were no reports of injuries after a car hit a parked car on Khandallah Rd between Lucknow Tce and Cockayne Rd about 6.35am.
Waka Kotahi NZ Transport Agency advised motorist travelling north from the city to continue to use SH2 and SH58 while congestion cleared and expect significant delays
Motorist were asked to be patient and take extra care when passing affected areas.