Traffic delays after truck hits Southwestern Motorway's Walmsley Rd overbridge

A truck has crashed into an overbridge on the Southwestern Motorway, SH20, this morning causing delays for motorists.

A large amount of debris is scattered across the southbound lanes - with a clean up operation causing temporary lane closures.

SH20 SOUTHWESTERN MWY - 7:40AM
A crash has left a large amount of debris across southbound lanes beneath the Walmsley Rd overbridge. Pass with extra care and expect delays through this area until fully cleared. ^TP pic.twitter.com/HVAQVZ88wS

— Waka Kotahi NZTA Auckland & Northland (@WakaKotahiAkNth) July 28, 2021

The centre lane southbound is currently blocked.

NZTA is warning motorists to take extra care and to expect delays through this area until the road is fully cleared.

Motorists face long delays while a significant amount of debris is cleared from the road. Photo / Simon Hayden

Police are in attendance and no injuries have been reported.

Auckland Transport has also warned that several bus services, including school buses, should expect "significant delays" in the area.

The southbound lanes were closed around 10.30am for a clean up operation.

As of 12.10pm, two southbound lanes remained closed. The clean up is expected to last beyond 2pm.

SH20 SOUTHWESTERN MWY - UPDATE 11:45AM
Two lanes south remain blocked through this crash scene with long delays from Hillsborough Rd. Clean up will take at least another 2 hrs. Delay your journey or consider using #SH1 to travel south as alternative, but expect delays. ^TP pic.twitter.com/pn1gCHBf6z

— Waka Kotahi NZTA Auckland & Northland (@WakaKotahiAkNth) July 28, 2021