There are delays for northbound traffic on Nelson Bay Road at Salt Ash due to a truck crash.
Police say the truck, which was carrying a load of scrap metal, overturned on the Richardson Road roundabout just after 5.30am.
The 40-year-old male driver escaped injury.
Northbound traffic on Nelson Bay Road is down to one lane between Medowie Road and Richardson Road.
Police say it could take up to 5 hours to clear the crash scene.
SALT ASH: Richardson Rd is closed eastbound between Medowie Road and Nelson Bay Road while a clean-up takes place. Diversion: https://t.co/diFwmd4Bpm pic.twitter.com/swZq8kVKKr— Live Traffic NSW (@LiveTrafficNSW) January 10, 2018