Pons Aelius-Where

This bridge is the modern Ponte S. Angelo. It was also completed by Hadrian in AD 134. It linked his mausoleum with the Campus Martius across the Tiber River. Other names for the bridge included the Pons Hadriani and the Pons S. Petri. It included three main arches and three smaller arches. 

Picture: http://upload.wikimedia.org/wikipedia/en/thumb/b/b1/Pons_Aelius_production2YD.jpg/500px-Pons_Aelius_production2YD.jpg