Ligne 60 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 était une ligne de 60 KV créée en mai 1916. Aujourd'hui, elle est exploitée en 63 KV.

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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.

## Futur:

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.

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 N618. 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 N129 et le canal de la Neste, et monte sur le plateau de Lannemezan ou elle croise la N638.
* Arrivée à Lannemezan, elle longe la voie ferrée reliant Toulouse à Bayonne 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 12 KV - (Arreau-Saint-Lary)¹.
2. Ligne 12 KV - (Arreau-Saint-Lary)².