The northbound lanes of Auckland's northwestern motorway have reopened after a truck carrying glue rolled earlier today.

The northbound stretch of motorway between the Te Atatu and Lincoln Rd off ramps were closed after the truck rolled 1km after the Te Atatu exit just after midday.

No other vehicles were involved.

Police said the truck driver was uninjured and the glue was non-toxic.

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Traffic was now flowing smoothly and the glue did not spill onto the motorway, police said.