Under the empire, the freestanding arch became one of the most widespread of Roman monuments, with a total that once must have far surpassed the 800+ examples known to us today. 1 This building type, which is equally ubiquitous in the capital, Roman East and West, and which came to represent both an efficient tool of Roman urbanism and a coherent emblem of imperial order and rule, has been the subject of many comprehensive studies, 2 yet, despite a scholarly focus on particular imperial arches, 3 relatively little attention has been given to the early development of the type. Many recognize the importance of the arch in the building program of Augustan Rome and the prominent rôle it played in the urban landscape of the 1st c. A.D., 4 but there has been scant interest in the poorlyknown Republican arches that preceded them. The arches of the Republic, prior to Augustus termed fornices, have normally been considered only as a preface to the Imperial era. 5 The earliest fornices have been widely labeled "votive" monuments, which implies that Republican arches had religious associations and were "set up not to glorify emperors or other mortals but to honor divine beings". 6 As a result, the monument type is conventionally divorced from the discourse on Roman military commemoration and the competitive environment of personal self-aggrandizement that manifested itself in the built environment of Republican Rome. The purpose of this article is to look at the evidence for the earliest known Roman arches in order to reconsider the "votive" classification, and then situate them more precisely within the context of the architectural development of the city and the political, economic and social realities of the 2nd and 1st c. B.C. It will also consider to what degree Imperial arches continued the traditions (functional, decorative, urbanistic, symbolic) established in the fornices of the Republic, and whether the Augustan arch represents a new direction for the architectural type. 7 1 In addition to extant monuments, this includes arches known from archaeological, literary, epigraphical and pictorial evidence. Fähndrich (2005, 3 n.18) suggests that 200 arches be added to the 630 catalogued by H. Kähler in 1939.