Six kilometres of the Oxley Highway between Warren and Gilgandra was closed due to flooding last October, forcing drivers to seek alternative routes.

An inspection of the Ewenmar and Tiger Bay causeways following the extreme weather events found they required flood repairs to ensure the safe condition of the highway.

Fast forward eight months and work has now begun to repair two flood-damaged causeways on the Oxley Highway about three kilometres north of Warren with an aim to deliver a more resilient road surface and offer better protection against future heavy rain events.

Transport for NSW Regional Director West Alistair Lunn said the Oxley Highway was a key regional route linking western NSW with the eastern seaboard and repairing the two causeways would benefit all road users.

“A series of extreme weather events in 2021 and 2022 left us with damage right across the NSW road network and this area in the state’s west was no exception,” Mr Lunn said.

“Work on the Ewenmar and Tiger Bay causeways will include replacing the existing road pavement with asphalt to deliver a more resilient surface that will be better able to withstand future flooding events.

“This project will not only improve the road quality for all local, tourist and freight road users, but also return the road level to design standards.”

Work to repair the causeways began on Thursday 1 June with Warren Shire Council delivering the work on behalf of Transport for NSW.

Work hours will be 7am to 6pm seven days a week, with no work on public holidays. Work is expected to take five weeks to complete, weather permitting.

Warren Shire Council has issued advice to motorists including lane closures and a 40km/h speed limit during work hours.

"A 60km/h speed limit outside of work hours," the Warren Shire Council advised over social media. "Motorists should allow up to five minutes extra travel time during this work."