Waka Kotahi NZ Transport Agency is advising motorists that a red alert has been issued for the Auckland Harbour Bridge from 4am tomorrow morning (Saturday 30 September) until 8am tomorrow morning, with wind gusts expected to reach 90-100km/h.
An amber alert has also been issued for most of the day, between 8am and 8pm, with wind gusts of 75-85km/h forecast.
Winds are expected to ease on Saturday evening.
Under an amber alert, speeds limits may be reduced and some lanes on the bridge may close. Under a red alert, all lanes on the bridge may close.
The bridge will remain in a 4x4 configuration tomorrow.
Motorists are urged to drive to the conditions, look out for the electronic message boards which will indicate lane closures and reduced speeds, and stay within their lane while travelling across the bridge.
Drivers of high sided vehicles and motorcyclists are advised to avoid the Auckland Harbour Bridge and use the western ring route on State Highways 16 and 18.
Watch this video to understand why lanes on the bridge may need to close if certain wind speed thresholds are reached.
The safety of road users is our top priority and we won’t hesitate to reduce speeds or close lanes if necessary.  
The safety of road users is our top priority and we won’t hesitate to reduce speeds or close lanes if necessary.
Waka Kotahi thanks road users for their patience and understanding.
