Update 1.06pm: State Highway 29 over the Kaimai Ranges is now OPEN.
This updates the bulletin below.
11.56am:
NZ Transport Agency Waka Kotahi (NZTA) advises road users that State Highway 29 over the Kaimai Range is closed until further notice between Valley View Road and Soldiers Road.
A truck carrying a hazardous substance understood to be chlorine, has been forced to stop for safety reasons.
The highway is closed in both directions while the risk is assessed by Fire and Emergency NZ.
There is no timeframe yet for re-opening the road and no suitable detour.
Road users are advised to delay travel and avoid the area.
NZTA will provide an update as soon as more is known.