A boat on a trailer has flipped on the southbound stretch of the Northern Motorway between Bawden Rd and Oteha Valley Rd in Dairy Flat, north of Auckland.
No one has been injured but the boat has blocked a great deal of the road and there is considerable congestion, police say.
Motorists are advised to avoid that area of the motorway.
- NZ Herald staff
Crash on Northern Motorway blocks traffic
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