With all 166 concrete segments now in place, the new bridge is on track to partially open to two lanes of traffic by mid-2021.

Member for Bega Andrew Constance said the people of Batemans Bay had been eagerly watching the progress of the new bridge and associated work.

"This marks a major milestone for a project which will deliver a new icon for Batemans Bay, safer journeys for locals, tourists, and freight vehicles and uninterrupted access North and South on the Highway," Mr Constance said.

"The last 'key' segment was placed on the superstructure of the bridge near Pier 5 on the southern foreshore of Batemans Bay.

"The concrete segments were produced at a temporary pre-cast facility located on an existing quarry about six kilometres south of Mogo and significant planning was carried out to ensure these large segments were delivered safely with minimal impact to road and river users.

"Each concrete segment weighs between 80 and 105 tonnes and the trucks that transported the loads are 31 metres long and up to 4.2 metres wide, so it was a significant achievement to complete all of these deliveries."

With the bridge segments delivered and installed the project team will carry out finishing work on the bridge deck, including installing traffic barriers and laying the road surface.

Work is also continuing on the new southern and northern foreshores - which will include a public artwork, a mural, a children's playground and a new floating pontoon on the southern side.

The project is expected to be complete in 2023.

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Finishing work to start on Batemans Bay Bridge