This is the most southern bridge of Budapest, connecting the Pestside (the Palace of Arts and National Theater) with the Buda side, and the district of Lagymanyosi. It is the newest bridge, finished in 1995.
It is around 450 meters, and has a special light setting during night time. At the Pest side you can find a HEV stop (City train) that will take you in the direction of the Csepel island.
A normal tourist will normally not use this bridge, but if you ever plan to cross it, try to do so after sunset, then it is more enjoyable than during daytime.