It's slow going on the Waikato Expressway this morning after northbound lanes were blocked by a crash.
The two-car crash happened at 6.20am between Whangamarino Rd and the Hampton Downs Rd off-ramp, police said.
Nobody was injured but a section of State Highway 1 was closed and motorists were advised to take alternative routes where possible.
Police said at around 7.15am the road was again partly open in both directions, but motorists were still urged to take care and drive to the conditions.