Ligne 63 KV - (Arreau-Lannemezan)

### Nombre de pylônes:

437 supports caténaires + 17 à 6 Triangles + 3 à 3 Triangles + 2 poteaux de type Nappe voûte + 2 de Transition + 1 à 2 Triangles

## Présentation:

La ligne à haute tension reliant les postes d'Arreau à Lannemezan est une ligne de 63 KV créée en mai 1916.

Chargement de la 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class=\"mw-parser-output\"\u003E\u003Cp\u003ELannemezan\n\u003C/p\u003E\u003C/div\u003E","title":"Lannemezan\n","link":"","lat":43.113280662046535,"lon":0.3919668678479411,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EArreau\n\u003C/p\u003E\u003C/div\u003E","title":"Arreau\n","link":"","lat":42.89983480349297,"lon":0.36439373972628974,"icon":""}]}
## Historique:

La voie ferrée de Lannemezan à Arreau est construite entre 1889 et 1895, cependant elle n'a été mise en service qu'en 1897. Une première ligne a été construite et fut terminée en mai 1916 et permettait originellement le transport de 4 câbles en aluminium. Elle fut cependant mise sous tension seulement en 1917 lorsque la caténaire fut entièrement déployée en 12 KV pour permettre son alimentation.

Suite à la normalisation dès 1921 par l'État pour un courant continu en 1500 V, une restructuration du système de la caténaire a été réalisée en 1923 avec la réutilisation des supports d'origine pour la création d'une ligne à 60 KV. Une autre ligne fut aussi construite pour transporter une même tension.

En 2001, l'ensemble des pylônes les plus âgés sont restaurés (seulement la partie haute). En avril 2011, la caténaire entre la gare de Labarthe Avezac et Arreau a été supprimée.

## Futur:

Suppression de la ligne d'ici 2024 suite à la création de deux lignes à 225 KV entre Lannemezan et Arreau en liaison souterraine.

## Description du tracé:

* La ligne débute à la centrale d'Arreau où elle longe un peu la D618. Elle part ensuite en double circuit avec la seconde ligne reliant Arreau à Lannemezan à l'opposé de la ligne allant à Saint Lary.
* Plus loin, après avoir passé la gare d'Arreau-Cadéac, les deux lignes se séparent chacune de leur côté tout en suivant la voie ferrée.
* À proximité de Camous, les deux lignes montent sur la montagne, se séparant ainsi de la ligne de chemin de fer avant de la retrouver de l'autre côté.
* Elle traversait Camous puis remontait sur une autre montagne se séparant une nouvelle fois de la ligne de chemin de fer avant de la retrouver plus loin.
* Après être passé dans Ilhet, dans Sarrancolin, et dans Rebouc, la ligne finie par passer sur la Neste.
* Un peu après, elle croise la D929 et le canal de la Neste, et monte sur le plateau de Lannemezan ou elle croise la D929ᴬ et la D938. Elle passe à proximité des usines de Lannemezan puis sur l'A64 et l'E80.
* Arrivée à Lannemezan, elle longe la voie ferrée reliant Toulouse à Bayonne en triple circuit avec les lignes reliant Arreau à Lannemezan² et Le Bouhet à Lannemezan jusqu'au poste de Lannemezan.

## Ancien projet:

À l'origine, la voie ferrée reliant Lannemezan à Arreau devait être prolongée jusqu'à Saint Lary Soulant, celle-ci devait aussi être électrifiée.

1. Ligne 63 KV - (Arreau-Saint-Lary)¹.
2. Ligne 63 KV - (Arreau-Saint-Lary)².