State Highway 1, Takanini is down to one lane northbound after a truck, carrying a small house, has collided with an overbridge.
Police were called to the incident, between the Papakura on-ramp and the Manurewa-Takanini off-ramp, around 3.25pm.
Thankfully, no one has been injured.
The highway will be down to one lane, northbound, for some time while debris is being cleared from the road.
Motorists are advised to avoid the area where possible, and expect delays.
ENDS