The approach to the ramp is long and wide. The clear spans of its two segmental arches are and , which corresponds to a span-to-rise ratio of 4.0 and 3.3 to 1 respectively. The accurately fitting inclined contact surface of the springings clearly proves the Roman origin of these arches. With an extraordinary width of , the voussoirs appear oversized in relation to the span (arch slenderness of 1:5.8 and 6.2 respectively). In contrast, the two surviving bridge arches no. 1 and 3 are instable substitutions, made of carelessly laid rubble. The date of these arches is unknown, as with all other repairs; possibly they were built in the period of the Knights Templar.