The Alessandrino district was completely demolished in the 1930s to make way for Via dell'Impero, now Via dei Fori Imperiali: Via Alessandrina is its only surviving witness and, although decontextualized, has become a pedestrian walkway allowing a suggestive point of view on the archaeological remains.

However the area – a plain at the foot of the Quirinal, Viminal and Oppian hills – came back to be swampy due to the decommissioning of the Roman sewage system, so much so that it was popularly called li Pantani (Romanesco for "the Quagmires").

The ground floors housed small businesses and artisan shops and in 1855 four taverns overlooked Via Alessandrina: one of them, called alle Colonnacce, stood among the remains of the Temple of Minerva.

According to this logic – which mixed functional ambitions (to speed up traffic, it was hypothesized the construction of a tram subway under the Capitoline Hill) and rhetorical exaltation of the memories of imperial Rome – a new variant to the master plan was approved in 1926, providing for the complete demolition of what had been built over the centuries above the Forums between Piazza Venezia and Via Cavour, as stated by Mussolini in 1925: «Millennial monuments must tower in the necessary solitude».

[3] The street was actually affected by excavations between March 2018 and December 2020:[4] the initial stretch, about 50 metres (160 ft) long, was dismantled to reconnect the two areas of the Trajan's Forum that the archaeological investigations of 1998–2000 had isolated.