The new security measures aim to minimise major traffic delays and increase the safety of innocent bystanders travelling on the bridge.
Changes include increased security, raising the internal height barrier fencing, installation of greater anti-climb mesh and additional surveillance cameras.
The penalty will also increase from $3300 to $22,000 in line with illegally climbing the Sydney Opera House.
Minister for Roads, Maritime and Freight Melinda Pavey said the NSW Government is delivering on a promise to toughen up deterrents.
“While we are sympathetic to someone’s personal situation, illegally climbing the bridge is not only extremely dangerous, it also endangers the lives of thousands of drivers who use it every day,” Ms Pavey said.
”While you can never 100% security proof the bridge, these new measures will go a long way in deterring future attempts.”