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Luas is a tram/light rail system in Dublin, Ireland. There are two main lines: The Green Line, which began operating on 30 June 2004, and the Red Line which opened on 26 September 2004. Since then, both lines have been extended and split into different branches further out of the city. The two lines, now intersect and connect within Dublin City Centre. The system now has 67 stations and 36.5 kilometres of track.

Seán Heuston Bridge is a cast-iron bridge spanning the River Liffey beside Heuston Station, Dublin. It was previously named King's Bridge and Sarsfield Bridge - and the bridge and adjacent train station are still commonly referred to by older Dubliners as "Kings Bridge" and "Kings Bridge Station" respectively. Previously used for road traffic, the bridge now carries pedestrian and Luas (tram) traffic.
Originally designed by George Papworth to carry horsedrawn traffic, the foundation stone was laid in 1827. Construction completed in 1828, and the bridge was opened with the name Kings Bridge to commemorate a visit by King George IV in 1831.