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Southwestern Motorway closure for safety upgrade

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The NZ Transport Agency will close a section of the southbound lanes on Auckland's Southwestern Motorway (State Highway 20) on Monday and Tuesday night (11 and 12 April) for work associated with improvements to the Walmsley Road interchange at Mangere Bridge.

Southbound drivers, including those heading to Auckland International Airport, will be diverted off the motorway at Walmsley Road to McKenzie and Kirkbride Roads.

"We do not anticipate that traffic volumes will be heavy overnight, but people heading to the airport should still give themselves a little extra time for their journeys," says Tom Newson, the NZTA's Project Services Manager Southern Corridor.

The southbound lanes will be closed between Walmsley Road and Massey Road both nights from 9pm until 5am. The Walmsley Road on-ramp will also be closed.  Northbound lanes of the Southwestern Motorway will remain open.

The closures are needed so that contractors can install new gantries for signs over the motorway.

The length of the Walmsley Road on ramp is being extended by the NZTA as a safety measure to prevent traffic using it from making quick and potentially dangerous manoeuvres across a busy motorway to reach the lanes for the airport.

For more information please contact:

Ewart Barnsley
Auckland Media Manager
NZ Transport Agency
T    64 9 928 8720
M  027 213 7616
E    ewart.barnsley@nzta.govt.nz

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