Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
New Fortresses in Apulia and Campania
Apulia and Campania were thus in the hands of the Romans. In order finally to secure and permanently to command the conquered territory, several new fortresses were founded in it during the years 440-442: Luceria in Apulia, to which on account of its isolated and exposed situation half a legion was sent as a permanent garrison; Pontiae (the Ponza islands) for the securing of the Campanian waters; Saticula on the Campano-Samnite frontier, as a bulwark against Samnium; and lastly Interamna (near Monte Cassino) and Suessa Aurunca (Sessa) on the road from Rome to Capua.
Garrisons moreover were sent to Caiatia (Cajazzo), Sora, and other stations of military importance. The great military road from Rome to Capua, which with the necessary embankment for it across the Pomptine marshes the censor Appius Claudius caused to be constructed in 442, completed the securing of Campania. The designs of the Romans were more and more fully developed; their object was the subjugation of Italy, which was enveloped more closely from year to year in a network of Roman fortresses and roads.
The Samnites were already on both sides surrounded by the Roman meshes; already the line from Rome to Luceria severed north and south Italy from each other, as the fortresses of Norba and Signia had formerly severed the Volsci and Aequi; and Rome now rested on the Arpani, as it formerly rested on the Hernici. The Italians could not but see that the freedom of all of them was gone if Samnium succumbed, and that it was high time at length to hasten with all their might to the help of the brave mountain people which had now for fifteen years singly sustained the unequal struggle with the Romans.
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Reference address : https://www.ellopos.net/elpenor/rome/2-06-italians-rome.asp?pg=17