46 BC	Planned by Julius Caesar.
42 BC to 12 BC	Construction completed by Augustus. Sources: P. Verduchi, LTUR vol. 4 (1999) 215.
82 AD to 96 AD	Restored under Domitian after the fire of 81 AD. Sources: P. Verduchi, LTUR, vol. 4 (1999) 215.
200 AD to 210 AD	So-called Umbilicus Urbis added to Rostra Augusti as part of the Severan remodelling. Sources: P. Verduchi, LTUR, vol. 4 (1999) 216.
200 AD to 210 AD	Restored under Septimius Severus in connection with work on the pavement of the Forum plaza, the building of the the five honorary columns, and the construction of the nearby Arch of Septimius Severus. Sources: P. Verduchi, LTUR, vol. 4 (1999) 216.
274 AD	Gilded statue of the Genius Populi Romani erected on the Rostra by Aurelian. Sources: Chronogr. ann. 354 270 VZ I.
312 AD	Rostra is illustrated in a relief carved on Arch of Constantine. The emperor is seen giving a speech in the middle of the Rostra, where he is flanked by statues of Trajan and Hadrian (or Marcus Aurelius). In the background are seen five honorary columns set atop the Rostra.


Speaker's platforms Rostra Diocletiani