"Probably reign ofTrajanorHadrian(98\u2013138 AD)" . . "Alcon\u00E9tar Bridge"@en . . . . . "The Alcon\u00E9tar Bridge (Spanish: Puente de Alcon\u00E9tar), also known as Puente de Mantible, was a Roman segmental arch bridge in the Extremadura region, Spain. The ancient structure, which featured flattened arches with a span-to-rise ratio of 4\u20135:1, is one of the earliest of its kind."@en . . . . "Puente de Alcon\u00E9tar"@en . "290.0"^^ . . "15.0"^^ . . . . "12.5"^^ .