The much-needed upgrade to Cessnock Road at Testers Hollow won't be happening anytime soon, with construction unlikely to start until 2019 at the earliest.
The state and federal governments insist they both remain committed to the $17 million project, which will flood-proof the busy road.
Further planning and design steps need to be taken before work can start.
“Further studies are required to ensure that the solution to the flood problem at Testers Hollow does not negatively impact surrounding areas and our joint funding commitment will be used to refine previous flood modelling and carry out important geotechnical and survey work to finalise the preferred option," Roads Minister Melinda Pavey said.
“Once this is complete we can then undertake the work. Early works should start in mid-2018 with construction expected to start in 2019.”
The Coalition promised $15 million towards the project in the lead up to the 2016 federal election.