Clear span in the context of "Structural member"

The Ponte Salario, also called Ponte Salaro during the Middle Ages, is a road bridge in Rome, Italy, whose origins date back to the Roman period. In antiquity, it lay outside the city limits, 3 km north of the Porta Collina, at the point where the Via Salaria (modern SS4) crossed the Aniene, a tributary of the Tiber. The visible side arches are assumed to originate from the first stone structure built during the 1st century BC.

In the Gothic War (535–554), the main arch was largely destroyed by the Ostrogothic king Totila, but repaired by his East Roman opponent Narses in 565, who recorded the extensive restoration works, including a river diversion, in an extant bridge inscription. At that time, the Ponte Salario was 72 m long and 6.52 m wide, with its semi-circular arch reaching a remarkable clear span of 24.86 m.

The Eurymedon Bridge (Turkish: Oluk Köprü) is a Roman bridge over the river Eurymedon (modern Köprüçay River) near Selge in Pisidia in southern Turkey. It is part of the road winding up from the coastal region Pamphylia to the Pisidian hinterland. Located 5 km north of the village Beşkonak in a sparsely settled area, the bridge crosses the Eurymedon high above the valley bottom.

The excellently preserved structure is 14 m long and 3.5 m wide (with a roadway of 2.5 m). The clear span of its single arch is c. 7 m, the thickness of its voussoirs, which were set without the use of mortar, 60 cm. The building technique and the sturdy stonework point to a construction date in the 2nd century AD, a time when Selge was flourishing.