I think the longest stone bridge of Spain is Roman bridge of Mérida, and was one of the longest in the ancient world. Its current length (was higher in antiquity) is 721 mts.
However, we could say that the longest stone building is the monumental part of the Aqueduct of Segovia, with over 813 meters in length. The aqueduct itself is 15 kms.
Viaducto del arroyo de Las Piedras (Álora), Málaga Province – Andalusia Community
The Arroyo de las Piedras viaduct it is the first Composite Steel-Concrete High Speed Railway Bridge in Spain
It has 1209 meters long (the longest viaduct en Córdoba-Málaga High Speed Railway) and is 93 meters high. It was finished building in 2005
Pont de Bac de Roda (Barcelona) – Catalonia Community
Designed by Santiago Calatrava and built between 1985 and 1987, the Bac de Roda Bridge (named after a street that leads to it) was built of steel and reinforced concrete, has 129 meters long and 46 meters. light.
Its function was to unite two different districts of Barcelona separated by the railroad tracks. [/url]
Ponte do Burgo (Pontevedra) – Galicia Community
It replaces an earlier Roman bridge downstream and gave the city its name, Pontevedra (Ponte Veteris, Old Bridge). It rises on the twelfth century, was extensively renovated in the twentieth century.
Puente de La Gaviota o de La Peñona (Castrillón <Salinas>) – Asturias Community
The Puente de La Gaviota (Seagull Brigde) or Puente de La Peñona (Peñona Bridge) is part of the Museum of the Anchors in the town of Salinas. In its vicinity there is a bust of French documentary film maker Philippe Cousteau. The bridge provides access to the viewpoint called La Peñona or Peña Lisa is located on a large rock in the sea.
Puente de Los Toruños(El Puerto de Santa María/Puerto Real), Cádiz Province – Andalusia Community
The Toruños Bridge is a wooden footbridge over the river San Pedro in Los Toruños marshes. It is an area of wild animal life located in the Bay of Cádiz, situated between the towns of Puerto de Santa María, Puerto Real and Cádiz, with human presence from three thousand years ago. [/url]
Puente Romano (Sallent de Gállego), Huesca Province – Aragon Community
The called Puente Romano (Roman bridge) in Sallent de Gállego is really a XVI century building spanning the course of Aguas Limpias (Clean Water) creek in half the village. [/url]
Puente de Segovia (Madrid) – Madrid Community
The Segovia bridge is the oldest (surviving) of the town. Its construction was ordered by Philip II to his favorite architect, the great Spanish architect Juan de Herrera. The works ranged between 1582 and 1584.
He has had many renovations through the centuries, having been destroyed during the Spanish Civil War.
Viaducto del Embalse de Valmayor (Colmenarejo) – Madrid Community
Viaduct over Valmayor reservoir, built in 1976, with a length of 700 mts. Supplements the old road linking the cities of Las Rozas and El Escorial.
Puente de Santa Catalina/Santa Katalina Zubia (Donostia / San Sebastián) - Basque Country Community
It replaced a wooden one in 1872, the Santa Catalina Bridge was the first permanent bridge in the city. It has been destroyed and rebuilt several times.
Viaducto Río Cuerpo de Hombre (Bejar), Salamanca Province – Castile & Leon Community
Viaduct 580 meters long on Cuerpo de Hombre (Man Body) river. It is part of the highway A-66.
Ponte Navea (Pobra de Trives, A / San Xoán de Río), Ourense Province – Galicia Community
Although medieval workmanship, the Navea Bridge has Roman origins, its base being a Roman bridge that was part of the Roman Road that linked Asturica Augusta (Astorga) with Bracara (Braga, Portugal), exactly the Via XVIII.
The former Roman bridge was much higher measures the medieval bridge we know today.
Ponte do Bibei (Pobra de Trives, A), Ourense Province – Galicia Community
The Ponte do Bibei (Bibei bridge) was built for the passage of the Via Nova or XVIII via of the Antonine Itinerary, the road was completed about 80 AD. The bridge was probably built during the time of Trajan (114-119 AD), given its likeness with Alcantara bridge and various inscriptions dedicated to the emperor found in the area. As the date after the construction of the Via Nova, it is believed that the current bridge was built over an earlier one of which nothing remains.
Pont de Pedret (Cers <Sant Quirze de Pedret>), Barcelona Province – Catalonia Community
The bridge is first documented in the year 1286. It includes four arches while initially had five, of unequal sizes, the central arch is pointed and much higher than the others, the rest are smaller. The bridge is about 80 meters long.
Near the bridge, and excavated in the rock, there are a number of round holes matching lace wooden beams that held an ancient Romanesque bridge.
Viaducto de O Eixo (Santiago de Compostela <O Eixo>), A Coruña Province – Galicia Community
Completed in 2008, the O Eixo Viaduct has a total length of 1224.4 m divided into 25 bays with spans of 42.5 + 25 x 50 + 39.10 m. Occupying the openings 12 and 13 a slightly pointed arch where the fixed point is realized projects.
Part of the high speed line Ourense-Santiago de Compostela.
Pontes do Filgueira (Crecente <Filgueira>), Pontevedra Province / (Cortegada), Ourense Province – Galicia Community
The new bridge, called Cortegada Viaduct has lontigud 260 meters, 180 meters of light and this mixed concrete and steel construction. Its construction was completed in 2008
The old bridge, always called Ponte Filgueira (Filgueira Bridge) was built while Frieira Reservoir in 1970.
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