Boyne motorway bridge

The M1 is the Irish Republic's longest stretch of dual carriageway. It goes from Dublin almost to the boarder with N. Ireland. Whilst motorway construction rarely furnishes much in the way of eye candy, this magnificent structure, the bridge across the River Boyne, is a handsome exception. At night it is spectacularly lit in various blues and purples. (Another feature worth looking out for on Irish motorways is sensitive planting of the embankments.)