I understood this street to be the harbour street (elsewhere I came across a notice indicating it was the Ana Yolu or Main Street)

This 24-metre-wide ancient street runs through the middle of the city, from the ‘South Harbour’ to the ‘Military Harbour’. The main part of it has been conceived as a procession street, with four steps for the spectators on each side of the road.

On the street’s left (in the West) lie the ‘Great Bathhouse’ and three agoras (the Commercial – or ‘Rectangular’ - Agora, the Agora of Domitian and the Late Roman agora); on its right (in the East) lie the Small Bath and the Theater. The 'Hadrian Waterway Gate' is on the southern end of the street.

Correspondent: J.M.Criel, Antwerpen.
Source: ‘Lycie’ – Cevdet Bayburtluoğlu & Personal visits (1989, 2006)