[2] A dedication to Septimius Severus was also dubiously reported (CIL X, 3825), but this probably belonged to the podium of a statue.
In 1860, it was involved in combat in the Battle of Volturnus: a commemorative plaque, with text written by Luigi Settembrini is located on one of the arch's pylons.
[5] The arch is constructed in brick (opus latericium) and originally had an outer coating of white limestone, now lost.
The pylons are coated at the base with blocks of white limestone and are lightened by niches with arched tops.
The holes in the lateral structure now allow the possibility of the presence of columns which framed the niches and must have supported an entablature which would have been above the vaults.