Auckland traffic delays after truck carrying house hits SH1 overbridge

SH1 SOUTHERN MOTORWAY, NORTHBOUND – DEBRIS – 3:35PM, SUN 4 JAN

Debris is blocking two northbound lanes of the Southern Motorway before the Takanini off-ramp. Pass with care and expect delays ^KF pic.twitter.com/Ce1aNFA6QH

— NZ Transport Agency – Auckland & Northland (@nztaaklnth) January 4, 2026

Photos posted to social media showed debris from the small house strewn across the lane under the Walter Strevens Drive overbridge.

“Prepare for EXTRA long queues,” one Facebook user wrote.

“Someone hit the under part of the Conifer Grove bridge and there is debris over 2 lanes,” they said.

Debris from the collision lying across northbound SH1 lanes near Takanini. Photo / Emilie Mous

Passer-by Emilie Mous described the extent of the crash site, saying there was “a huge amount of insulation, wood, small bits of glass, even some big panels that looked like a whole wall came off.

“It was easy to see from a distance and everyone was turning out of the slow lane, traffic turned very slow,” she said.

The highway was down to one lane, northbound, while debris was cleared from the road. All lanes have since reopened.

NZTA said traffic in the area is very heavy and motorists should allow extra time for congestion.