Earlier today the State Emergency Service and Transport for NSW advised that a significant landslip has closed the Castlereagh Highway between Lithgow and Mudgee near Capertee. 

Heavy rainfall last night is thought to be the cause of the subsidence which saw at least 30 metres of roadway destroyed. 

The landslip took with it a high voltage power pole and a length of ArmGuard safety railing. 

"Our crews are on site assessing the damage ad working to secure the area, with safety being our top priority," Transport for NSW said in a public alert. "Please be advised long delays are expected and detours are currently in place around the closed road." 

Water is also over the road on the Castlereagh Highway approximately 50 kilometres north of Coonamble, although the highway remains open at this stage. 

The Kamilaroi Highway between Walgett and Brewarrina has been closed since 5 October due to flooding between Gingie Road and Goodooga Road and also between Brewarrina and Bourke since around 1pm on Saturday 8 October. 

Water is over the road in a number of locations between Brewarrina and Nyngan near Gongolgon. 

All western plains councils have closure notices covering all unsealed roads and some sealed roads. If travelling, please check Road Conditions for each council in the western plains area.

The low level Emile Serisier Bridge on the Newell Highway in Dubbo remains closed due to flooding. 

"Water levels from the Macquarie River have risen across the four-land bridge, which saw it close late on Saturday night," Transport for NSW said. 

"We're monitoring the situation closely and will reopen to traffic once safe to do so." 

Approach to Emile Serisier Bridge in Dubbo. IMAGE: Transport for NSW.

Local diversions are in place for vehicles via the two-lane L.H. Ford Bridge, and traffic control will be on-site. Oversize and overmass (OSOM) vehicles should avoid the area and use an alternative route.  

Please allow additional travel time as delays are expected. For the latest traffic updates download the Live Traffic NSW App, visit livetraffic.com or call 132 701.