To Mellowes Bridge (between Usher's Island & Usher's Quay):

 25    25A    26    51    66A    66B    67  

 67A    68    69    78    79    79A  

Dublin Bus timetables available here.

Luas:

 Red  Line - stops viewable here.

The nearest Luas stop is Smithfield.

Luas timetables available here.