The arch signaled the end of the via Flaminia, which connected the cities of Romagna to Rome, and spans the modern Corso d'Augusto (the ancient decumanus maximus), which led to the beginning of another road, the via Emilia, which ran northwest to Piacenza.

Its style is simple but at the same time solemn. The central arch, which is of exceptional size, is flanked by two engaged columns with fluted shafts and Corinthian capitals. The four clipei (shields) placed next to the capitals each depict Roman divinities: Jupiter and Apollo on the Roman side, Neptune and Roma facing the city of Rimini.

The gate's principal function, aside from functioning as a city gate, was to support the lavish bronze statue of Augustus, depicted driving a quadriga.

The main peculiarity of this arch is that the archway was especially large for a gate of the time. The explanation must be the fact that the peaceful policy of Augustus (the so-called Pax Augusta, made a civic gate that could be closed unnecessary, since there was no danger of attack.

The battlements on the upper part date to the medieval period (10th century), at which time the city came to be held by the Ghibellines. It remained one of the city gates until the Fascist period, when the city wall was demolished and the arch was left as an isolated monument.

Along with the Bridge of Augustus and Tiberius, it is today one of the symbols of Rimini, so important that it appears on the city's coat of arms.

The inscription above the archway reads:

SENATUS POPVLVSQVE ROMANVS

IMPERATORI CAESARI DIVI IVLIO FILIO AVGVSTO IMPERATORI SEPTEM CONSOLI SEPTEM DESIGNATO OCTAVOM VIA FLAMINIA ET RELIQVEIS CELEBERRIMEIS ITALIAE VIEIS ET AVCTORITATE EIVS MVNITEIS

The Senate and People of Rome

to Imperator Caesar Augustus, son of the divine Julius, Imperator seven times, Consul seven times and consul-elect for an eighth time, for the via Flaminia