It is the street that connects Largo do Arrabalde to the bridge of Trajan, and that has two levels, one that goes down to the river, and the street that goes up to the Roman bridge.

Trajan's bridge was built between the end of the 1st century and the beginning of the 2nd century AD, along with the development of the thermal baths, it is one of the best Roman legacies of ancient Aquae Flaviae, which still prevails today, resisting historical floods, to the strong currents of the river.