The Pons Sublicius is the earliest known bridge of ancient Rome, spanning the Tiber River near the Forum Boarium ("cattle forum") downstream from the Tiber Island, near the foot of the Aventine Hill. According to tradition, its construction was ordered by Ancus Marcius around 642 BC, but this date is approximate because there is no ancient record of its construction. Marcius wished to connect the newly fortified Janiculum Hill on the Etruscan side to the rest of Rome, augmenting the ferry that was there. The bridge was part of public works projects that included building a port at Ostia, at the time the location of worked salt deposits. Construction Legend tells us that the bridge was made entirely of wood. The name comes from Latin pons, pontis, "bridge", and the adjective sublicius, "resting on pilings", from the stem of sublicae, pilings. As a sublica was a pick, sublicae implies pointed sticks; that is, the bridge was supported by pilings driven into the riverbed. Julius Caesar’s engineers used this construction to bridge the Rhine. The bridge was rebuilt repeatedly. The date of its final disappearance is not known, but it is not in classical times. The Via Latina went over the bridge and connected to the Via Cassia, a road built over an old Etruscan road that led to Veii. The bridge was a favorite resort for beggars, who used to sit upon it and demand alms, hence the Latin expression "aliquis de ponte" for a beggar. The bridge was downstream from the Pons Aemilius, a good stone bridge with which it is sometimes confused. Between the two, the Cloaca Maxima, or Great Sewer, was effluent into the Tiber. In the drawing by Friedrich Polack (published 1896) included with this article the pile bridge is falsely shown as a pile pier. Presumably some structure still existed prior to 1896, which was incorrectly identified. Otherwise the drawing appears to be accurate in the major details. The observer is standing on the Via Ostiensis at the foot of the Aventine, which is at his back. The river flows toward him. The stone bridge in evidence is the Pons Aemilius. The Servian Wall goes along the bank of the river, is pierced by the Porta Trigemina (you can see the three openings) and starts up the Aventine. Beyond the gate is the Forum Boarium. In the immediate foreground are the docks, or Navalia. The