5.15pm update: State Highway 1 at Calico Line in Marton is now open following a serious crash earlier this morning.
State Highway 1 south of Waiouru is open to a single lane and under stop/go traffic management following a serious crash earlier today.
NZ Transport Agency Waka Kotahi is reminding road users to plan trips accordingly and avoid the area or delay travel if possible.
For those travelling through the Marton area, please continue to expect delays as congestion through the area eaes.
And further north, for people travelling through Waiouru, please consider alternative routes or expect delays and plan your journey accordingly.
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10am
A serious crash has closed a stretch of State Highway 1, near Calico Line at Marton.
The crash happened just after 9am.
The road is likely to remain closed for several hours while the Serious Crash Unit is onsite.
NZ Transport Agency Waka Kotahi is strongly urging road users to avoid the area and plan trips accordingly.
Please expect delays to travel when driving on alternative roads.
A detour is in place - please follow the directions of traffic management on site.
