The roundel at Broadway is open from today, along with other changes to the prom.
Work on Douglas Promenade is in its final stages after Auldyn Construction faced delays last week, with further changes coming into place.
Walpole Avenue will be reversed and Church Road Marina will be open for vehicles exiting the prom, with Loch Promenade walkway opening to pedestrians.
Meanwhile, the second roundel is controlled by traffic lights, and Peveril Square from the sea terminal to Lord Street will be one way.
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