The structures of the eastern arm of the archaic gate were completely excavated. On the basis of the materials recovered from a trench dug in the embankment of the eastern arm a more precise chronology was formulated for the late archaic phase (end of the 6th-beginning of the 5th century B.C.). Furthermore, the entire plan of the eastern forepart of the classical phase (end of the 5th century B.C.) was looked at. This structure reached a length of 12 m to form a tenaille gate with the forecourt projecting and opening towards the exterior.

It was established that in the Hellenistic phase (second half of the 3rd century B.C.) the doubling of the curtain walls also involved the inner circuit (width reached circa 12.40 m). Moreover, it was ascertained that the restructuring led to the moving forward of the front of the eastern forepart towards the centre of the forecourt and the creation of a spur, probably symmetrical to another on the western side. For the Sullan period the hypothesis proposing the abutment, on the inner side, of a new curtain wall in opus reticulatum (width reached circa 13 m) was confirmed. It was also possible to ascertain the existence in this phase of a gate with a double arch, perhaps subjected to new restructuring when the Via Domitiana was built.

It remains unclear whether the major monumentalisation of the area can be dated to the Augustan or Domitianic period. This comprised the construction of a wall on a north-south alignment, up against the northern curtain wall of the eastern forepart and paving in trachytic pavers. The attribution to the period of the Greek-Gothic war of the last restructuring of the fortifications, involving the eastern forepart, as well as the upper part of the emplekta of the various phases of the curtain wall, was confirmed.