Wikipedia:<br>The Stephan bridge is the largest preserved stone bridge in Austria. It is a bridge of the Brenner road (B 182) and crosses the Ruetz before its confluence with the sill River. The Foundation was laid in 1843 by Archduke Stephen of Austria. At the time of construction it was the largest and longest single arch bridge of the monarchy and the third longest in the world 43,63 meters.<br>The Stephan bridge is located near the hamlet of Untersberg mountain in the municipality of Schönberg in Tirol, where the Stubai Valley of the Wipptal Valley branches off. The Brenner road runs over the bridge. Where it runs today straight, the Roman road in the direction of Brennero once branched off and ran up on the Schönberg. The Roman road, which was part of the route Verona-Augsburg, sections are still well preserved.<br>Ruetz power station is located on the Roman road near the bridge of Stephan. The rest the Ruetz, that today is not used by the ÖBB powerhouse of Fulpmes, under water the Stephan bridge.<br>Stephan bridge known Gasthof of same name, close of the Gasthof is Schupfen, headquarters of Andreas Hofer in 1809.<br>On the Brenner railway, there is the stop Unterberg Stefan bridge close to the Stephan bridge