The giant barge making its way to Batemans Bay to help in the construction of the new bridge was off the Central Coast on the morning of Wednesday, July 10.
The AMS 1803 will be used in the construction of the new Batemans Bay bridge over the Clyde River.
Proud owner AMS Tugs and Barges said the Singapore registered "deck cargo ballast tank barge" was 54.86 metres long, 21.34 metres wide, 4.27 metres deep and weighed 3000 tonnes. It had a draft of 3.3 metres and a deck load of 20 tonnes.
The barge was off Woy Woy at 9.40am moving at an average speed of 5.59 knots.
Roads and Maritime Services said it would just fit between the pylons of the existing bridge, which are about 25 metres apart, when it arrives.
"The barge is about 21 metres wide and 55 metres long and will operate from and be anchored upstream of the Batemans Bay Bridge within an exclusion zone marked by yellow buoys," RMS said.
"All vessel operators in the area should exercise caution, keep a proper lookout and comply with bouys and signs."