BOYNE COTTAGES OFF BRIDGE STREET TRIM COUNTY MEATH
These cottages are at Bridge Street Bridge [Old Trim Bridge or Trim Bridge] and I noticed on Google Maps that this is the oldest bridge in Ireland. However I lived in Donegal when I was young and I remember my father showing me the oldest bridge in Ireland and according to the locals it was built by St. Patrick. The bridge in question is opposite ‘Gulladuff House’ on the grounds of Moville Boutique Hostel is reputed to be the oldest bridge in Ireland, dating back to the 6th Century.
I think that the bridge in Trim is the oldest unmodified bridge “still in use”.
[Update: According to a number of accounts Trim bridge crosses the River Boyne near the castle. It was built about 1330, and is regarded as the oldest unchanged medieval bridge in Ireland.]