Truck crash blocks part of Auckland's Southern Motorway

Due to a crash just prior to the northbound Takanini off-ramp, both northbound lanes are blocked. Photo / NZTA

A truck crash has blocked part of Auckland's Southern Motorway this morning.

Both lanes of the northbound side of the Takanini off-ramp are closed, according to NZTA.

SH1 SOUTHERN MOTORWAY, NORTHBOUND - CRASH - 6:15AM

Due to a crash just prior to the nbnd Takanini off-ramp, both nbnd lanes are BLOCKED.

Nbnd traffic please exit the motorway at the Papakura off-ramp and re-enter motorway at Takanini for SH1. ^EW pic.twitter.com/oOVx3xJOZY

— Waka Kotahi NZTA Auckland & Northland (@WakaKotahiAkNth) April 6, 2018

Traffic is being diverted off the northbound lanes at Papakura.

Firefighters have been to mop up a diesel leak but it is expected to take a few hours to clear.

St John Ambulance attended but no one was taken to hospital.