A Cloaca maxima in the roman town of Privernum, Italy: the project, the plan, the construction:

The recent excavation of a Roman republican town, Privernum, 90 km south of Rome, Italy, has allowed the discovery and the investigation of a channel more than 4 meters wide, with vaulted roofing, preserved for about 200 meters. This waterway, surely the result of straightening of a former stream, represents the main sewer of the roman settlement, dating back to the middle republican period; the intention is to excavate and restore it so that it can be used to drain the archaeological area. The intervention, still in progress, has made possible an accurate examination of the building technique and construction process of the channel. It reveals a design integrated directly into the central part of the town; the need to fix exactly the relation between the channel and the urban planning, which was clearly affected by the layout and the orientation of the conduit, suggests the existence of a master plan.