The Princes Highway works at Bewong have reduced the chance of a car sliding off the road in wet weather and removed several roadside hazards, assistant infrastructure minister Jamie Briggs said.

The federal government’s Black Spot Program is providing $20.1 million this financial year to fix more than 80 NSW roads.

Federal Member for Gilmore Ann Sudmalis said the Bewong works had provided several road upgrades including better curve alignment and advisory signs to provide a safer driving experience.

“Between 2007 and 2012 there were 20 crashes on this section of the road, placing strain on local emergency services and the community,” Sudmalis said.

“Works to improve this dangerous site began in early 2014, so I would like to extend my thanks to local drivers for their patience during the project construction period.

“This upgrade is an investment in saving lives and reducing road trauma—I don't want our community to experience the grief and despair of another accident at this site.”

The government has pledged a record commitment of $500 million to the Black Spot Program between 2014 and 2019.

Near Camden in western Sydney the green light has been given to three additional projects under a $200 million local roads package.

Briggs said the Commonwealth had a $3.6 billion Western Sydney Infrastructure Plan aimed at unlocking the region's economic capacity.

“The local roads package will fund a range of road upgrades such as the installation of traffic lights, roundabouts or additional turning lanes, to relieve congestion for Western Sydney residents,” he said.

“We are building the infrastructure that local residents want while slashing travel times and creating jobs in Western Sydney.”