The giant barge floating down the East Coast is due to arrive in Batemans Bay on the morning of Friday, July 12.
The size of an Olympic swimming pool, the AMS 1803 was off Woy Woy on the morning of July 10 and is due to sail up under the Batemans Bay bridge between 6.30-7.30am on Friday.
At about 10.30am on Thursday morning, the barge was off Jervis Bay.
A Roads and Maritime Services spokesperson said the bridge span would be lifted for about 15 minutes to allow the barge to pass between the pylons.
"The barge, named AMS 1803, will be in the Clyde River for the duration of the project and will house a crane and other materials to build the new bridge piers," the spokesperson said.
"A lift opening is scheduled for Friday 12 July between 6.30am and 7am, weather permitting, and will take about 15 minutes.
"The bridge lift will allow the first barge to pass under the existing bridge in preparation for work as part of the Batemans Bay Bridge replacement project.
"All vessel operators in the area are advised to exercise extreme caution, keep a proper lookout and comply with local signage.
"The lift will take up to 15 minutes and may cause delays along the Princes Highway, the Kings Highway and other local roads.
"Motorists and pedestrians are reminded to follow the bridge signals when crossing the bridge.
"If conditions are not suitable for the lift, the community will be notified of a new date and time.
"Roads and Maritime thanks motorists for their patience during this time.
"For the latest traffic updates download the Live Traffic NSW App, visit livetraffic.com or call 132 701."