Truck blocking all lanes on Southwestern Motorway now cleared

A crash involving a truck on Auckland's Southwestern Motorway is causing delays as all lanes, travelling in both directions, are blocked. Photo / Supplied

A crash involving a truck on Auckland's Southwestern Motorway causing delays for traffic travelling in both directions has now been cleared.

At 10am, the truck had been cleared from the road, NZTA confirmed.

SH20 SOUTH WESTERN MOTORWAY, NORTHBOUND - CRASH - 9:30AM
Due to a #crash, the road is BLOCKED in both directions in Mangere East, between Portage Rd and Massey Rd. Congestion is building so please consider using an alternative route or expect significant #delays. ^EL pic.twitter.com/mg84yhisso

— Waka Kotahi NZTA Auckland & Northland (@WakaKotahiAkNth) December 27, 2018

The New Zealand Transport Agency said congestion was already building and motorists were being advised to take an alternative route.

Meanwhile, on the Southern Motorway, a gravel spill was causing delays at the Newmarket Viaduct through to Ellerslie.

SH1 SOUTHERN MOTORWAY, SOUTHBOUND - GRAVEL SPILL - 9:05AM
Due to gravel on the road from the Newmarket Viaduct to Ellerslie, please expect #delays through the area. Our crews are currently en route and will likely put lane closures in place while they sweep the road. ^EL pic.twitter.com/SpJfB69o8n

— Waka Kotahi NZTA Auckland & Northland (@WakaKotahiAkNth) December 27, 2018