Dawson Street is being reduced to one lane from Tuesday February 25th.
It's to facilitate the latest set of Luas Cross City works and will go from the junction with St. Stephen's Green to the junction with South Anne Street.
A number of bus stops are being moved further down the street and the taxi rank on Dawson Street is being moved to Molesworth Street.
Motorists are being asked to use alternative routes to avoid driving down Dawson Street including the new right turn from St. Stephen's Green onto Merrion Row.
For more details on the changes, click here.