Transport NSW has warned commuters to brace for travel chaos today as the iconic Sydney Harbour Bridge is shut down for a rally for several hours.

Authorities have advised individuals to refrain from non-essential travel, anticipating significant delays in the Harbour Tunnel, which serves as a crucial route for Sydney residents when the bridge is unavailable.

It is expected the bridge will be shut down to traffic from 11.30am until 4pm today.

The Supreme Court has ruled in favor of the pro-Palestinian demonstration, organized by the Palestine Action Group, following an attempt by the NSW police commissioner to ban the march citing public safety concerns.

A heavy police presence is expected as officers are pulled from their core duties in local area commands across the city.

Hundreds of officers will be deployed to target “unlawful and anti-social behaviour”, NSW Police confirmed today.

“The foremost priority for NSW Police is always the safety of protest participants, other members of the public who may be affected by the protest, and the officers involved in the operation,” stated Acting Assistant Commissioner Adam Johnson.

“Police will have a high-visibility presence at the operation today and will work with participants to ensure there are no breaches of the peace.”

The Harbour Bridge closure will also impact some bus routes and the public have been warned the shut down could extend beyond 4pm.

Commuters have been asked to follow police advice and avoid the area unless essential.

“We ask all participants to heed police instructions, be respectful, as there will be large crowds. We need to manage this with care,” NSW Police Acting Deputy Commissioner Peter McKenna informed the media yesterday.

“Our stance remains unchanged: we will support people who intend to conduct a safe protest by collaborating with them.

However, if individuals aim to commit any offences, engage in anti-social behavior, or otherwise threaten public safety, we will not hesitate to take action.”

There are also plans for a pro-Palestine protest on Melbourne’s King Street Bridge today.

Thousands are expected to descend on the area after police requested they change their route over concerns  emergency services vehicles won’t be able to get through.

The march will begin at the State Library at 12pm.

Premier Jacinta Allen warned anyone who “disrupts” emergency services will be dealt with “swiftly” by police.

Pro-Palestine protests, which have taken place every week since October 7, 2023, have called for an immediate Israel ceasefire and withdrawal from Gaza and are now marching to highlight the need for aid in the region.