The Via Flavia was an ancient Roman road which connected Trieste to Dalmatia, running across the Istrian coast. It was constructed during the reign of emperor Vespasian, in 78/79 AD. After Trieste, it crossed the Rižana, the Dragonja/Dragogna and, at Ponte Porton, the biggest Istrian river, the Mirna/Quieto. Wikipedia