SH1 closed nights

The new wider bridge opened last month and demolition of the old McClymonts Bridge has begun.

A section of State Highway One in Auckland is closed to motorists at night until the end of August to allow for demolition of old McClymonts Bridge.

The closure takes place between Oteha Valley Road and Greville Road, between 9pm and 5am.

Drivers are advised to plan ahead, follow the detours and look out for reminders on overhead and electronic signs.

NZ Transport Agency project manager Andrew Thackwray says motorists should take care when driving to Albany at any time of the day, as there will be a lot of activity in the area.

The main work will take place in July, with two 19-metre-long beams to be removed each night by cranes on the side of the motorway.

The 50-tonne beams will be cut in half and then placed on trucks. Crews will then return during the day to dig out the support walls.

The old McClymonts Road Bridge has been replaced with a new longer and wider bridge, which was completed and opened last month.

This now enables the motorway underneath to be widened with extra traffic lanes, including the extended Northern Busway and a new shared walking and cycling path.