Motorists are getting a quicker run through what was a traffic bottleneck outside Northies hotel at Cronulla.
An extra right turn lane has opened for traffic turning from Elouera Road into Kingsway.
The works, which were carried out by Roads and Maritime Services (RMS), allow seven extra cars to fit into the upgraded turning bay, doubling capacity.
About 20,000 motorists use Kingsway each day.
Major works started early this year.