这将有效缓解悉尼海港大桥、Harbour Tunnel、Anzac Bridge以及Western Distributor的交通拥堵情况，使澳洲最繁忙的公路之一的通行更加便捷。 交通厅长Jenny Aitchison形容这一升级项目好比“在进行马拉松的过程中进行心脏 手术”，因为工程是在繁忙的交通环境中实施的。

A multi car crash on the M4 has left five people injured after a car collided into an existing minor accident.

The Western Harbour Tunnel and Warringah Freeway upgrade were joined together for the first time since works began in mid-2021.