The Tera Viaduct is situated over the Tera River between km points 710+697.500 and 711+342.500 of the north-northeast corridor of the Madrid-Galicia high-speed railway line. It is therefore 645 m long with a span distribution of 60-75-150-75×5-60. Such arrangement, with one large 150 m span, is dictated by the crossing of the Tera River, at a point where piers cannot be built within the riverbed due to the presence of a relatively deep lagoon.
