Ligne 60 KV - (Le Hourat-Haut-de-Gan) - Piquage

### Nombre de pylônes:

85 supports caténaire (après St-Cricq-Haut-Gan) + 274 supports caténaire + 1 à 3 Triangles + 1 à 4 Triangles + 2 à 2 Triangles

## Dimensions:

### Longueur:

5,05 Haut de Gan-ligne st Cricq9,4 km jusqu'à Arudy (fin pylône treillis)+ 1,75 km jusqu'à Izeste + 14,74 km

## Présentation:

La ligne à haute tension reliant la centrale hydro-électrique du Hourat à la sous-station d'Haut de Gan est une ligne électrique de conception ancienne, aujourd'hui majoritairement hors tension (selon les sections) et située dans le département des Pyrénées Atlantiques, en région Nouvelle Aquitaine. Elle effectuait un piquage, à Haut de Gan.

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 class=\"mw-parser-output\"\u003E\u003Cp\u003EHaut de Gan\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EPiquage\n\u003C/p\u003E\u003C/div\u003E","title":"Haut de Gan\n","link":"","lat":43.176496937672354,"lon":-0.42892235097278464,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ELe Hourat\n\u003C/p\u003E\u003C/div\u003E","title":"Le Hourat\n","link":"","lat":42.98419833185356,"lon":-0.4290079788185386,"icon":""}]}
## Historique:

La voie ferrée entre Pau et Canfranc a été créée de 1881 à 1928 tandis que la voie de chemin de fer entre Buzy et Laruns a été créée de 1881 à 1883. Les travaux d'électrification de ces deux voies ferrées, et donc, de création de la ligne électrique n'ont cependant débuté qu'en 1927 pour une mise sous tension en 1928, année de mise en service de la sous-station d'Haut de Gan.

En 1953, la centrale hydro-électrique de Castet est créée sur le Gave d'Ossau, l'énergie produite est transmise à la ligne via la création d'un piquage.

En 1962, une autre centrale est créée à proximité de la N134BIS (actuelle D934). Il s'agit de celle de Geteu, la ligne sera alors raccordée aussitôt en piquage. C'est au même moment que la tension est haussée à 63 000 volts.

Suite au réaménagement de la D934 au niveau du passage à niveau, un poteau est remplacé au sud de Geteu, en 1977. Toujours la même année, la ligne est réagencée à Laruns et tous les supports dans la ville sont remplacés. En 1978, suite à la construction de lotissements, de la démolition de l'ancienne gare de Bielle et du réaménagement du passage à niveau, cinq poteaux sont remplacés par deux poteaux. L'armement du poteau juste au nord de la D934 est lui aussi remplacé. Toujours la même année, des poteaux sont aussi remplacés au nord de Laruns suite aux réaménagements d'un passage à niveau.

Entre 1979 et 1982, le point de piquage du Castet est modifié, de nouveaux poteaux sont placés et la ligne y est connectée par des bretelles verticales.

En 1983, un poteau au sud de la D290 se voit modifié (devenant un poteau à 3 Triangles), un autre, juste au nord de la route est remplacé par un Nappe voûte, juste au nord de la D290. En 1984, d'autres poteaux seront aussi remplacés supportant le même armement, notamment aux abord des haltes entraînant une surélévation de la ligne.

Entre 1984 et 1987, la ligne est raccordée à la ligne à 63 KV entre Saint Cricq et Haut de Gan en piquage. La section entre cette ligne et Haut de Gan est alors démontée mis à part un poteau à proximité de la D936. Les poteaux caténaires sont toutefois conservés.

En 1990, deux poteaux sont remplacés à Arudy afin de surélever les fils au-dessus de la D920, un autre est aussi placé juste au sud de la D53. Au même moment, de nombreux autres poteaux voient leur armement d'origine remplacé de 1990 à 1991 par des Nappes voûtes afin de rehausser la ligne. D'autres poteaux d'origine voient aussi leur armement légèrement modifié en 3 Triangles afin de permettre à la ligne de créer une transition entre les supports du style Nappe voûte et Drapeau. En 1992, deux autres poteaux à 3 Triangles sont placés au bord de la D920, au nord d'Arudy pour surélever les fils. Au cours de la même année, des poteaux sont remplacés à Montplaisir, et un autre est modifié (devenant un poteau à 3 Triangles) suite à la déviation de la D934.

En 1995, des poteaux principalement de type drapeau sont placés suite à la construction de la D934, sur l'ancien emplacement de la voie ferrée, à l'est de Bielle. En 1999, le poteau juste au sud de la D936 est démonté. Parallèlement, deux poteaux de type Nappe voûte sont placés juste au nord de la centrale de Geteu, remplaçant ainsi les anciens supports.

En 2001, un poteau au niveau de la D232 est remplacé. En 2008, de nouveaux poteaux à 3 Triangles sont placés suite à la restructuration du réseau routier entre Arudy et Izeste.

En 2012, deux poteaux sont remplacés à Geteu suite à la construction d'une fromagerie.

Début 2021, suite aux réaménagements de certains tronçons inutilisés de l'ancienne voie ferrée entre Buzy et Laruns en piste cyclable, les anciens supports caténaires inutiles sont supprimés, y compris un ancien poteau équipé d'un armement en Drapeau à la gare de Buzy. Parallèlement, des travaux se réalisent sur l'été, afin de connecter les lignes le Hourat-Arudy et Arudy-Jurançon aux centrales de Castet et de Saint Cricq. L'objectif est de rediriger l'électricité produite vers cet axe à 63 KV, afin de pouvoir supprimer par la suite, la ligne sur support caténaire. La dépose de la ligne débute à partir du mois de novembre et se terminera en avril 2022. Seuls les poteaux entre Buzy et Arudy seront conservés.

## Futur:

Dépose partielle de la ligne suite à son remplacement via les lignes à 63 KV, entre le Hourat-Arudy et Arudy-Jurançon.

## Description du tracé:

* La ligne débute au niveau de la centrale du Hourat et part en direction de l'est jusqu'au niveau de l'ancienne gare de Laruns. Elle se redirige vers le nord, en longeant la vallée et globalement, la voie ferrée entre Buzy et Laruns.
* Après avoir croisé deux fois la N134BIS (actuelle D934), elle se connectera en piquage à la centrale hydro-électrique de Geteu. Par la suite, elle poursuivra sa route en évitant les hameaux de Geteu et de Montplaisir par l'ouest.
* Au nord-est de Bielle, la ligne monte sur les flancs de montagnes jusqu'à la gare de Castet. Plus loin, elle fait un piquage à la centrale hydro-électrique du Castet et contourne Izeste par l'ouest.
* Au niveau d'Arudy, la ligne croise la N618B (actuelle D2920), passe à l'est de la gare et recroise la route, juste avant de franchir le Gave d'Oloron sur le viaduc de Bescat.
* Au nord de Buzy, la ligne passe en dessous la ligne à 60 KV entre Saint Cricq et Haut de Gan. Elle passera ensuite à l'est de la gare de Buzy et rejoindra la voie ferrée entre Pau et Canfranc.
* La ligne montera sur une colline, se séparant ainsi de la ligne de chemin de fer. Elle croisera la N636 (actuelle D936) avant de retrouver la voie ferrée. Elle la longera jusqu'à la sous-station d'Haut de Gan.

## Tronçons récupérés pour la création de nouvelles lignes:

1. Ligne 60 KV - (Le Hourat-Castet-Haut-de-Gan) - Piquage.
2. Ligne 63 KV - (Le Hourat-Castet-Geteu-Haut-de-Gan) - Piquage.
3. Ligne 63 KV - (Le Hourat-Castet-Geteu-Saint-Cricq-Haut-de-Gan) - Piquage.

## Articles contextes:

1. Compagnie du Midi.
2. Pylône caténaire.
3. Viaduc de Bescat.