Mellows Bridge (Irish: Droichead Uí Mhaoilíosa[1]) is a road bridge spanning the River Liffey, in Dublin, Ireland and joining Queen Street and Arran Quay to the south quays.

[3] From a drawing made by Francis Place in 1699, it appears to have been a four-span stone arched bridge.

The collapse was described by George Semple as being an unlucky accident when a raft of timber was swiftly carried downstream in a flood where it got lodged across the middle arch.

The water flow increased under the raft at this point, and since the piers of the bridge were built on top of the river bed, "This raft of timber obstructing the current of the surface, in like manner increased the power of it at the bottom and within the space of a few hours totally demolished the bridge.

[2][6] The bridge was renamed for the legendary Queen Maeve at a meeting of the Municipal Council on 2 January 1922.