Ligne 60 KV - (Monlôo-Aureilhan)

## Présentation:

La ligne à 60 KV reliant Monlôo à Aureilhan est une ancienne ligne électrique construite par la Société Force et Lumière des Pyrénées qui était située dans le département des Hautes-Pyrénées en région Occitanie.

Chargement de la 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class=\"mw-parser-output\"\u003E\u003Cp\u003EAureilhan\n\u003C/p\u003E\u003C/div\u003E","title":"Aureilhan\n","link":"","lat":43.2375116868711,"lon":0.09087803939893835,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EMonl\u00f4o\n\u003C/p\u003E\u003C/div\u003E","title":"Monl\u00f4o\n","link":"","lat":43.07407435171573,"lon":0.15528304810920712,"icon":""}]}
## Historique:

Construite en 1931 par la Société Force et Lumière des Pyrénées, cette ligne électrique permettait d'apporter l'énergie électrique issue de nombreuses centrales hydro-électriques de la haute vallée de l'Adour dans le bassin tarbais.

Dès le début des années 1960, la ligne voit sa tension augmenter à 63 000 volts.

En 1972, la section entre l'actuelle N21 et le poste d'Aureilhan est enfouie suite au fort développement urbain. Un pylône Nappe a été installé lorsque la N21 a été mise en service pour de créer une déviation par le sud. Parallèlement, la ligne est réhabilitée, de nombreux pylônes voient leur tête changer devenant ainsi des pylônes de type Nappes voûtes. D'autres pylônes à 3 Triangles sont aussi modifiés afin d'installer des isolateurs suspendus et non plus des isolateurs rigides comme à l'origine.

C'est finalement en 1984 qu'est démontée la ligne électrique partiellement suite à la création de l'axe Lugra-Monlôo. Toutefois, certaines sections seront réutilisées pour la création de lignes à 20 KV.

La section exploitée en 20 KV entre Salles Adour et la D8 fut démontée en 1995 tout comme celle entre la D28 et le chemin de Cami dera Mataléna. Celle entre le chemin de Cami dera Mataléna et le nord d'Ordizan fut démontée entre 1998 et 2000 et la section du nord au sud du village fut enlevé lors de la déviation par l'ouest de la D8 en 2005.

## La ligne de nos jours:

Il ne reste pratiquement rien de cette ancienne ligne mis à part quelques fûts supportant des têtes de pylônes de type Nappe voûte exploitée pour du 20 KV entre Ordizan et Bagnères de Bigorre.

## Description du tracé:

* La ligne électrique débutait au nord du poste de Bagnères de Bigorre, Monlôo. Se dirigeant plein nord, elle passait assez rapidement sous les lignes à 220 KV Pragnères-Lannemezan et à 150 KV Lau-Balagnas-Monlôo-Lannemezan tout en longeant la voie ferrée Tarbes-Bagnères.
* Arrivée à Ordizan, elle longeait la D8 sur la gauche tout en longeant toujours la ligne ferroviaire. Au niveau de Montgaillard, elle passait sous la ligne à 150 KV reliant Bastillac à Lannemezan.
* Au sud de Bernac Dessus, elle traversait la D8, passait dans le village et continuait de longer la voie ferrée jusqu'à Soues. C'est là qu'elle s'en éloigne afin d'éviter un grand hangar. Elle traversait par la suite la voie ferrée Toulouse-Bayonne et s'en rapprochait en aval de la D608 pour la longer.
* Après l'avenue des Sports, elle longeait de nouveau la D8 sur la droite jusqu'au poste d'Aureilhan.

## Tronçons récupérés pour la création de nouvelles lignes:

1. ~~Ligne 20 KV - (Salles-Adour-D8).~~
2. ~~Ligne 20 KV - (D28-monlôo).~~