Ancient
Roman bridge built at the end of the second century BC or at the beginning of
the first century BC
It was
built at the ninth mile of the ancient Via Prenestina where maybe there was a mutatio, a station to replace horses
125 m (410
feet) long and 16 m (52 feet) high with seven arches built with concrete
faced with square stones made of a rock called sperone, with keystones in travertine and heads in tufa of the Aniene
River
Thousands
of people cross the bridge by car every day without even realize they are using
a structure more than 2000 years old
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