The crash has blocked part of SH1. Photo: NZTA
Police were called to the multi-vehicle crash on State Highway 1 between Ohaka and Tram Rds about 10.40am on Tuesday.
Motorists are warned to continue to avoid the crash site near the Ohoka Rd overbridge.
NZ Transport Agency Waka Kotahi said the highway was reopened to southbound traffic about 12.15pm.
"Road users are advised to use an alternate route and expect delays."
A police spokesperson said several people were injured in the crash.
"Thankfully, injuries were not serious."
