9.2
Others say that the name was meant to distinguish between possible and impossible functions; the lawgiver enjoining upon these priests the performance of such sacred offices only as were possible, and finding no fault with them if any serious obstacle prevented. But most writers give an absurd explanation of the name; Pontifices means, they say, nothing more nor less than bridge-builders, from the sacrifices which they performed at the bridge over the Tiber, sacrifices of the greatest antiquity and the most sacred character; for pons is the Latin word for bridge.
9.3
They say, moreover, that the custody and maintenance of the bridge, like all the other inviolable and ancestral rites, attached to the priesthood, for the Romans held the demolition of the wooden bridge to be not only unlawful, but actually sacrilegious. It is also said that it was built entirely without iron and fastened together with wooden pins in obedience to an oracle. The stone bridge was constructed at a much later period, when Aemilius was quaestor.179 B.C.