Minister for Regional Transport and Roads Paul Toole said maintenance work on the bridge, also known as the William Bradford Bridge, located 5.5 kilometres west of Harden, would start next Monday.

"The maintenance project will deliver improved safety and efficiency for all road users, and will extend the life of the bridge, after a routine inspection uncovered some damage," Mr Toole said.

"Work includes replacing damaged safety barriers and kerb on both sides of the bridge, concrete patching and joint repairs to help ensure the bridge remains safe and serviceable for all road users."

Member for Cootamundra Steph Cooke said she welcomed these safety works.

"I want to acknowledge the hard work of community members including Di Peisley and the Hilltops Freight Industry Group who have passionately advocated for change at this bridge," Ms Cooke said.

"While I am pleased this preliminary safety work is being done I am committed to fighting for a replacement bridge at this site.

"Many people in the community have raised their concerns about this bridge, and it is vital we continue to work to improve road safety."

Work will be carried out between 7am and 5pm on weekdays from Monday, 17 August, and is expected to be complete by mid-October, weather permitting.

Changed traffic conditions are in place for the safety of workers and motorists, including traffic control, a single lane closure, and a reduced speed limit while work is carried out.

Motorists are advised to allow up to five minutes extra travel time to their journey while work is under way. For the latest traffic information, visit www.livetraffic.com, download the live traffic app or call the Transport Management Centre on 132 701.