Sections of the motorway link to Auckland International Airport will be closed tonight (19 May) because of necessary work associated with the upgrade of the Walmsley Road on ramp at Mangere Bridge.
The closures, from 9pm tonight until 5am tomorrow (20 May), affect the southbound lanes of both State Highways 20 and 20A. SH20 (the Southwestern Motorway) will be closed from the Walmsley Road off ramp to Massey Road, and SH20A towards the airport will be closed from the off ramp to Kirkbride Road.
People driving to the airport will be diverted off the Southwestern Motorway at Walmsley Road to McKenzie and Kirkbride Roads. Traffic heading to Manukau and beyond will be diverted from Walmsley Road to Robertson and Massey Roads.
All northbound lanes will remain open.
The same closure will be repeated for five nights starting this Sunday, 22 May.
Safety improvements at the Walmsley Road on ramp will prevent people using it from weaving across the Southwestern motorway to reach SH20A. The work is due to be completed in June.