Emergency crews responded to a serious crash in Northland early this morning.
The incident shut off part of State Highway 1 between Mangapai Rd and Springfield Rd in Oakleigh, just south of Otaika, early on Wednesday.
Traffic remained heavy for much of the morning north and south of the area with anyone heading north being diverted on to SH12 then right onto Paparoa-Oakleigh Rd before continuing onto Paparoa Rd and onto Mangapai Rd, before getting back onto Mangapai Rd.
Southbound traffic was diverted in the opposite direction.
New Zealand Transport Agency reopened the road at about 7.55am.
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