Ligne 150 KV - (Bayet - Roanne)

## Présentation:

La ligne Bayet-Roanne est une ancienne liaison à 150 kilovolts qui reliait la ville de Roanne (42) au poste d'interconnexion de Bayet (03). Construite durant l'entre deux guerre, elle est aujourd'hui en majeure partie déposée.

Chargement de la carte...{"type":"ROADMAP","minzoom":false,"maxzoom":false,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"mappingservice":"googlemaps3","width":"auto","height":"350px","centre":false,"title":"","label":"","icon":"","lines":[{"text":"","title":"","link":"","strokeColor":"#00F2FF","strokeOpacity":"0.39","strokeWeight":"4","pos":[{"lat":46.27285069970591,"lon":3.2917550691317565},{"lat":46.272502144777945,"lon":3.2917014249514587},{"lat":46.27216397022984,"lon":3.2939587719929087},{"lat":46.27170416813937,"lon":3.2970057614338266},{"lat":46.27114053450804,"lon":3.3009754307758676},{"lat":46.27064809200474,"lon":3.3041940815937387},{"lat":46.26976702409363,"lon":3.310434205535948},{"lat":46.269325001489825,"lon":3.3135455679932235},{"lat":46.26890967503223,"lon":3.316925151351988},{"lat":46.26842017909565,"lon":3.3199828696289657},{"lat":46.26797517899635,"lon":3.3231371474304794},{"lat":46.267541492304446,"lon":3.326304465194303},{"lat":46.267096485071654,"lon":3.329480200667936},{"lat":46.26668114172827,"lon":3.3326773938136878},{"lat":46.26618420895025,"lon":3.336067706008512},{"lat":46.265835611626486,"lon":3.3385782536464514},{"lat":46.26519032987976,"lon":3.3413462933498206},{"lat":46.26458954349449,"lon":3.3439963158565345},{"lat":46.26386265733748,"lon":3.347075491805631},{"lat":46.262505282895155,"lon":3.3529870804744544},{"lat":46.26183029183633,"lon":3.355894595046598},{"lat":46.26117754532617,"lon":3.358941584487516},{"lat":46.260369018987994,"lon":3.3618996946450608},{"lat":46.259686583809234,"lon":3.364710649692668},{"lat":46.25893737888637,"lon":3.3681975214120286},{"lat":46.2581875185898,"lon":3.371414773376906},{"lat":46.25748280190994,"lon":3.374515406998122},{"lat":46.25677342916625,"lon":3.377530466737677},{"lat":46.2560538576922,"lon":3.380652558031012},{"lat":46.25531943995655,"lon":3.3838068358325257},{"lat":46.25455553545253,"lon":3.386971557397054},{"lat":46.2538581907048,"lon":3.3903189542476397},{"lat":46.25327953620359,"lon":3.392732942361043},{"lat":46.25204060154925,"lon":3.394653404015706},{"lat":46.25069035346746,"lon":3.3967669847194415},{"lat":46.249154591343675,"lon":3.3992131593410235},{"lat":46.24766330291445,"lon":3.401573503274129},{"lat":46.24620165252457,"lon":3.403848016518758},{"lat":46.24473996318769,"lon":3.406197631615804},{"lat":46.24323371464942,"lon":3.4085711595683854},{"lat":46.24171779911095,"lon":3.410966878759214},{"lat":46.24025599030367,"lon":3.4132521208399025},{"lat":46.238816404482,"lon":3.4154515322321144},{"lat":46.237767115600164,"lon":3.4171059187197583},{"lat":46.2367675268162,"lon":3.4185339267829162},{"lat":46.23576791982339,"lon":3.419961934846074},{"lat":46.234411553519145,"lon":3.4225022061369526},{"lat":46.2332035819284,"lon":3.4248279007066396},{"lat":46.23279540330815,"lon":3.425911513148656},{"lat":46.23189461656557,"lon":3.428375122128835},{"lat":46.230993815038396,"lon":3.4307958157647755},{"lat":46.230171855533854,"lon":3.432976451693883},{"lat":46.22918103471257,"lon":3.435578194438329},{"lat":46.227711469771954,"lon":3.4391830833543446},{"lat":46.22647937995601,"lon":3.4421871574510243},{"lat":46.225832844527346,"lon":3.443659556497951},{"lat":46.224767324716254,"lon":3.4461982004794223},{"lat":46.22276485968685,"lon":3.4509007500092004},{"lat":46.22179329156871,"lon":3.453187651757732},{"lat":46.22045055120005,"lon":3.4562041143583544},{"lat":46.219714302741394,"lon":3.4580314870187845},{"lat":46.218978044410214,"lon":3.4598588596792546},{"lat":46.21855052450964,"lon":3.461705954746672},{"lat":46.21764789900691,"lon":3.465698817026004},{"lat":46.217012508594244,"lon":3.4686187956993386},{"lat":46.21613955265349,"lon":3.4721825045362875},{"lat":46.21537638992403,"lon":3.4755299013868735},{"lat":46.214772088216236,"lon":3.4782550257460043},{"lat":46.214054192948254,"lon":3.4812483710066244},{"lat":46.21329434219941,"lon":3.484225623013155},{"lat":46.21255805276427,"lon":3.4871948283926413},{"lat":46.211910844898675,"lon":3.489970914723055},{"lat":46.21124478756608,"lon":3.493232756101614},{"lat":46.21062962734725,"lon":3.496151137118022},{"lat":46.210103554610825,"lon":3.498640364692047},{"lat":46.209289820823265,"lon":3.5022237959359437},{"lat":46.208719605985664,"lon":3.504637784049347},{"lat":46.208003859123004,"lon":3.507754510924652},{"lat":46.20724503844181,"lon":3.5110724034760743},{"lat":46.206583474863635,"lon":3.514018810078934},{"lat":46.20582203575767,"lon":3.5173159155104905},{"lat":46.20520909002973,"lon":3.5198834600899964},{"lat":46.204857883400756,"lon":3.5219714915292277},{"lat":46.204328467480664,"lon":3.52528261027925},{"lat":46.20376785404597,"lon":3.528227675777602},{"lat":46.20314783120095,"lon":3.5313873179971456},{"lat":46.202535969507004,"lon":3.5344381290701943},{"lat":46.201986476215026,"lon":3.537238355281742},{"lat":46.201431089416396,"lon":3.5401029545096474},{"lat":46.20085930775483,"lon":3.543139215114506},{"lat":46.2003320752354,"lon":3.5459394413260537},{"lat":46.199626615359186,"lon":3.549222465160282},{"lat":46.199099371011044,"lon":3.552376742961796},{"lat":46.19874215855583,"lon":3.554289771780512},{"lat":46.198014018435785,"lon":3.558057241237478},{"lat":46.19744201053297,"lon":3.561056774916116},{"lat":46.196888657798084,"lon":3.5639942057874574},{"lat":46.19625551345554,"lon":3.5671580773205402},{"lat":46.19574585078277,"lon":3.569834354365158},{"lat":46.19511969141838,"lon":3.5729963950175936},{"lat":46.19439071830642,"lon":3.576487148162375},{"lat":46.19386968405359,"lon":3.5789264753733585},{"lat":46.19321248449365,"lon":3.581838855879438},{"lat":46.19261651443181,"lon":3.585033117574108},{"lat":46.192079953627236,"lon":3.5878411411706734},{"lat":46.191021601497205,"lon":3.590576994365864},{"lat":46.18986853150597,"lon":3.593446958011799},{"lat":46.188878840225414,"lon":3.5959092258874703},{"lat":46.187694158187576,"lon":3.598832833713703},{"lat":46.18659672618369,"lon":3.6015177249376107},{"lat":46.18549927227018,"lon":3.604202616161518},{"lat":46.18403968032764,"lon":3.6080167173806954},{"lat":46.18316130670255,"lon":3.6102885484163094},{"lat":46.18211299676625,"lon":3.6129479586545754},{"lat":46.1812322709748,"lon":3.6151788860027123},{"lat":46.18001933479162,"lon":3.618289913183861},{"lat":46.17886580185419,"lon":3.621358025020771},{"lat":46.17842303151345,"lon":3.6252161586685316},{"lat":46.178112498899466,"lon":3.628089363065654},{"lat":46.177793796569034,"lon":3.630985086968317},{"lat":46.177352145298975,"lon":3.6350722425903026},{"lat":46.177071886455195,"lon":3.637523516171539},{"lat":46.17667916965359,"lon":3.641109496895263},{"lat":46.176467952062254,"lon":3.6429883179456013},{"lat":46.176078434995496,"lon":3.6462404300116047},{"lat":46.17586299000515,"lon":3.6479892302893147},{"lat":46.175532391740646,"lon":3.650580244197701},{"lat":46.17493433814509,"lon":3.6553599406622395},{"lat":46.17474934881016,"lon":3.657065825595711},{"lat":46.17447520684952,"lon":3.659544186725472},{"lat":46.17421592227371,"lon":3.661807971134041},{"lat":46.17381139132976,"lon":3.66508563055024},{"lat":46.17334742150634,"lon":3.669500546588753},{"lat":46.17284518562252,"lon":3.673652606143807},{"lat":46.17263864350517,"lon":3.675471143855904},{"lat":46.17229762438759,"lon":3.6788480450056538},{"lat":46.171829926959155,"lon":3.682853924169396},{"lat":46.17161483681923,"lon":3.6849500705145344},{"lat":46.1710041099701,"lon":3.688426213397835},{"lat":46.17041640898545,"lon":3.6917950679205402},{"lat":46.16937955835657,"lon":3.6975564528845295},{"lat":46.16903944777622,"lon":3.699493007793282},{"lat":46.16863162808223,"lon":3.701813118591164},{"lat":46.16823453269117,"lon":3.7039602269075855},{"lat":46.167798216703,"lon":3.706492902769898},{"lat":46.167332176043644,"lon":3.709154324664925},{"lat":46.1669740342206,"lon":3.7113444326233136},{"lat":46.166393720606465,"lon":3.714756915191395},{"lat":46.16592522992211,"lon":3.7178149898189616},{"lat":46.16540862236167,"lon":3.7206314874598734},{"lat":46.164862287405015,"lon":3.7236196464777382},{"lat":46.16439415520776,"lon":3.7260121769190224},{"lat":46.16401147275394,"lon":3.7281096643686684},{"lat":46.163270250138524,"lon":3.731862074780503},{"lat":46.16254295057223,"lon":3.7354119784117135},{"lat":46.16205343446733,"lon":3.737931913781205},{"lat":46.16115724651716,"lon":3.74255067770485},{"lat":46.1603970358188,"lon":3.7465337580919655},{"lat":46.15995747615747,"lon":3.7477742797613534},{"lat":46.15906887121403,"lon":3.75032573108677},{"lat":46.15847593354631,"lon":3.7520735255360993},{"lat":46.15675337760689,"lon":3.7571258014917763},{"lat":46.15580411697109,"lon":3.759783886876975},{"lat":46.15427413694383,"lon":3.764417411075902},{"lat":46.15194835282468,"lon":3.7713261150088817},{"lat":46.150265143692884,"lon":3.7763039616958505},{"lat":46.148715673986516,"lon":3.7808955702846347},{"lat":46.14758734718386,"lon":3.784108875942791},{"lat":46.146563060883885,"lon":3.7868930281585644},{"lat":46.146253815985276,"lon":3.7894358008213525},{"lat":46.14598250529474,"lon":3.792514976770449},{"lat":46.145755792596304,"lon":3.7947573035068993},{"lat":46.14554320214709,"lon":3.7975682585545067},{"lat":46.145347707403225,"lon":3.8002182810612206},{"lat":46.14512247875694,"lon":3.8029970496006493},{"lat":46.144052072567426,"lon":3.806301531106997},{"lat":46.143334170242554,"lon":3.808468946663748},{"lat":46.142556789384344,"lon":3.810722192908975},{"lat":46.14174282716759,"lon":3.8134825851629106},{"lat":46.14119647159687,"lon":3.815341755187882},{"lat":46.14052004559109,"lon":3.8176868042222},{"lat":46.13969487362247,"lon":3.8203475555649735},{"lat":46.13839390173988,"lon":3.824510343956087},{"lat":46.13677321955508,"lon":3.8301763553274126},{"lat":46.135412701810615,"lon":3.8348332631432225},{"lat":46.13473614768667,"lon":3.8373444037470783},{"lat":46.13432162321823,"lon":3.840280618882268},{"lat":46.13390709562957,"lon":3.843259749361656},{"lat":46.133167250182034,"lon":3.8481022113702767},{"lat":46.1327508931903,"lon":3.8508809799097055},{"lat":46.12996642489671,"lon":3.8557009095094674},{"lat":46.12765212350332,"lon":3.8596343690298074},{"lat":46.12620029123077,"lon":3.862151622190284},{"lat":46.12525035209552,"lon":3.865358203067588},{"lat":46.12395740470159,"lon":3.86970807553749},{"lat":46.123236557088156,"lon":3.872011757805156},{"lat":46.12215480320769,"lon":3.875706333085107},{"lat":46.12110277428193,"lon":3.8794009083650582},{"lat":46.11971119290228,"lon":3.8845661723754876},{"lat":46.119074883628045,"lon":3.886977143003749},{"lat":46.1181559638408,"lon":3.8904395395658486},{"lat":46.11768278621793,"lon":3.8921447539470666},{"lat":46.11677685819478,"lon":3.8954220780871385},{"lat":46.115933434649165,"lon":3.8985305906973355},{"lat":46.11500597922391,"lon":3.901908749132561},{"lat":46.11437862190711,"lon":3.9042522873498076},{"lat":46.11361125141085,"lon":3.906969008851009},{"lat":46.112711955992594,"lon":3.910225283281905},{"lat":46.11182752149899,"lon":3.913438642368563},{"lat":46.11102554629471,"lon":3.9163248446422205},{"lat":46.11013561608205,"lon":3.919586701551596},{"lat":46.10932005291976,"lon":3.9225266933791847},{"lat":46.1084957264899,"lon":3.9254772686691997},{"lat":46.10767138773207,"lon":3.9284063862870955},{"lat":46.1068600539684,"lon":3.931389148085289},{"lat":46.105929690880565,"lon":3.93469377496527},{"lat":46.10516985574199,"lon":3.9374621054159054},{"lat":46.104544455007186,"lon":3.9397528572882567},{"lat":46.10371075854326,"lon":3.942773170012659},{"lat":46.102810098373844,"lon":3.9460295171303716},{"lat":46.102002685960365,"lon":3.948934422180317},{"lat":46.100925725528114,"lon":3.952816956072782},{"lat":46.10014917795596,"lon":3.9555950722316613},{"lat":46.09863381538898,"lon":3.9609698929072312},{"lat":46.09780172162678,"lon":3.963936252982565},{"lat":46.09624365700518,"lon":3.9695929502474048},{"lat":46.09549701502745,"lon":3.9722302118744057},{"lat":46.094661081634314,"lon":3.975232253927432},{"lat":46.093773053951686,"lon":3.9785025168819477},{"lat":46.09214229499543,"lon":3.984391631856825},{"lat":46.09124505116247,"lon":3.9876902409342296},{"lat":46.09049135684265,"lon":3.9903802425707102},{"lat":46.088808642556785,"lon":3.9964888465993997},{"lat":46.087941222594104,"lon":3.9995860639579828},{"lat":46.08711312885185,"lon":4.002583065505316},{"lat":46.086256324798,"lon":4.005685527269889},{"lat":46.085400040998,"lon":4.008754888454584},{"lat":46.08451424476477,"lon":4.011791606095292},{"lat":46.08369182129371,"lon":4.014806637545956},{"lat":46.082896943566645,"lon":4.017570682500553},{"lat":46.08211693800308,"lon":4.020291812110912},{"lat":46.081174577786356,"lon":4.0217107578092515},{"lat":46.07958845941778,"lon":4.02415430735128},{"lat":46.078006498457235,"lon":4.026561618506896},{"lat":46.07673173841746,"lon":4.028532385862964},{"lat":46.07545427837555,"lon":4.03045654269623},{"lat":46.0738889018997,"lon":4.0328133698005875},{"lat":46.0723246741268,"lon":4.035166590901289},{"lat":46.07079077193505,"lon":4.037469729237895},{"lat":46.06936133488796,"lon":4.0396459022498865},{"lat":46.067783135367,"lon":4.041935618394534},{"lat":46.066662766514895,"lon":4.044223097507222},{"lat":46.0657675940359,"lon":4.046080304661528},{"lat":46.06477286031997,"lon":4.048119342770846},{"lat":46.06349756097494,"lon":4.0507320939803515},{"lat":46.06224573349793,"lon":4.053261556895915},{"lat":46.061206633859605,"lon":4.0553631375663235},{"lat":46.0603434426699,"lon":4.057211020677931},{"lat":46.0594802379851,"lon":4.059058903789499},{"lat":46.058528072333615,"lon":4.06110242925954},{"lat":46.057326478293156,"lon":4.0637628628030065},{"lat":46.05616355364806,"lon":4.0664985570985435},{"lat":46.05487848873679,"lon":4.069566924761734},{"lat":46.054016300406325,"lon":4.071675101322536},{"lat":46.05315335153532,"lon":4.073807437626904},{"lat":46.05306046681629,"lon":4.076191245923262},{"lat":46.05296758194106,"lon":4.078532138875421},{"lat":46.052777902069074,"lon":4.081870813581121},{"lat":46.052597435395235,"lon":4.085181662851065},{"lat":46.05303957397004,"lon":4.0877758606412495},{"lat":46.05306333056991,"lon":4.088321941012172},{"lat":46.05296352290198,"lon":4.088820286754884},{"lat":46.05196800126587,"lon":4.0912313200922235},{"lat":46.051030921524124,"lon":4.093531178038989},{"lat":46.05009699484439,"lon":4.095796905962548},{"lat":46.04977894913922,"lon":4.096194844654266},{"lat":46.04872637566466,"lon":4.096747865590071},{"lat":46.04752245661095,"lon":4.0973569699758405},{"lat":46.04521892364592,"lon":4.0960307390876505},{"lat":46.043099010748236,"lon":4.0946917069718225},{"lat":46.041063430518726,"lon":4.093145108566039},{"lat":46.03902157430999,"lon":4.0916020153758925},{"lat":46.037644986440114,"lon":4.091211342460914},{"lat":46.03607782090418,"lon":4.090769242774055},{"lat":46.03452705975667,"lon":4.090333616209434},{"lat":46.03294165123933,"lon":4.089885132951823},{"lat":46.032888192990235,"lon":4.089094945220895},{"lat":46.03295829358736,"lon":4.088431630453941},{"lat":46.03354824912943,"lon":4.086785690653167},{"lat":46.03425737066246,"lon":4.085525988950538}]},{"text":"","title":"","link":"","strokeColor":"#FF0000","strokeOpacity":"1","strokeWeight":"2","pos":[]}],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"visitedicon":"","wmsoverlay":false,"zoom":false,"layers":[],"controls":["pan","zoom","type","scale","streetview","rotate"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"resizable":false,"kmlrezoom":false,"poi":true,"cluster":false,"clustergridsize":60,"clustermaxzoom":20,"clusterzoomonclick":true,"clusteraveragecenter":true,"clusterminsize":2,"imageoverlays":[],"kml":[],"gkml":[],"searchmarkers":"","fullscreen":false,"scrollwheelzoom":false,"locations":[{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EBayet\n\u003C/p\u003E\u003C/div\u003E","title":"Bayet\n","link":"","lat":46.272843283666695,"lon":3.291765797967816,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ERoanne\n\u003C/p\u003E\u003C/div\u003E","title":"Roanne\n","link":"","lat":46.034259561444166,"lon":4.085536083515802,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EMarcenat\n\u003C/p\u003E\u003C/div\u003E","title":"Marcenat\n","link":"","lat":46.238803300679635,"lon":3.4154290349285343,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ESaint Etienne de Vic\n\u003C/p\u003E\u003C/div\u003E","title":"Saint Etienne de Vic\n","link":"","lat":46.204333891633205,"lon":3.5252709761456735,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EAmbierle\n\u003C/p\u003E\u003C/div\u003E","title":"Ambierle\n","link":"","lat":46.1136024818337,"lon":3.906969669522846,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EMably\n\u003C/p\u003E\u003C/div\u003E","title":"Mably\n","link":"","lat":46.067786908650994,"lon":4.041910745048711,"icon":""}]}
## Historique:

#### *Une ligne d'interconnexion régionale :*

Réalisée par la *Société de Transport d'Energie du centre* (STEC) en 1930, cette ligne à haute tension faisait partie du réseau primitif d'interconnexion national. En effet, elle permit à l'époque de relier, via le poste de Bayet, les sites industriels de Clermont Ferrand et Montluçon au bassin houiller de la Loire (et indirectement aux centres de production du massif central et des Alpes).

   Au Coteau, elle rencontrait la ligne Roanne-La Rivière et les deux entraient ensemble dans le poste de Roanne portées par deux portiques à 2 niveaux. Elle était à l'origine exploitée en 120 000 volts mais sa tension fut relevée à 150 KV dès 1932.

En 1940 ou 1941, la ligne fut légèrement raccourcie suite à la création d'un second poste électrique à proximité du premier. Mais celui-ci fut démonté à peine 15 ans plus tard avec la mise en service d'un poste de transformation 150/63KV et le développement du réseau à 63 000 volts. Un des deux portiques est supprimé à ce moment là.

Cette ligne était la principale liaison électrique entre le Nord Auvergne et la région Rhône-Alpes jusqu'à la fin des années 1960 et la mise en service de la ligne 225 KV Bayet - Riorges. Elle devient obsolète à partir de 1985 et le raccordement de l'agglomération Roannaise au réseau 400 KV (création du poste de Grépilles). Elle sera presque entièrement démontée par la suite.

#### *Chronologie du déclassement et de la dépose :*

* 1986: piquage sur la ligne à Ambierle pour la création d'une ligne 63 KV Roanne - Changy, le reste de la ligne est probablement mis hors tension ( fin de l'exploitation en 150 KV).
* 1989: Un tronçon de 10 km est réutilisé entre Bayet et Marcenat pour alimenter la voie ferrée Paris - Clermont Ferrand via une sous station 225 KV.
* Entre 1988 et 1990 : le tronçon Roanne -Riorges est déposé; la ligne 63 KV de Changy est raccordée à Riorges. On procède dans le même temps au démantèlement des installations à 150 KV de Roanne.
* Entre 1990 et 1992: un court tronçon de 2 km est réutilisé à Saint Etienne de Vicq pour la création d'une ligne 63 KV. La section Marcenat-Saint Étienne de Vicq est démontée.
* Entre 1992 et 1994: dépose de la ligne entre Saint Étienne de Vicq et Ambierle.

## Description du tracé:

* La ligne partait du poste de Bayet et prenait une direction légèrement sud-est.
* Au niveau de la D142, elle tournait un peu plus vers le Sud et franchissait l'Allier au sud de Billy
* Elle croisait la voie ferrée Moret-Lyon et la D906 au Sud de Magnet puis longeait brièvement la ligne 400 KV Bayet-Grepilles à Saint Étienne de Vicq.
* Elle passait ensuite au sud du Breuil et au Nord d'Arfeuilles puis traversait un bois avant d'arriver dans la Loire
* Elle contournait Saint Bonnet des Quarts par le Nord puis croisait à nouveau la voie ferrée au Nord d'Ambierle.
* À partir d'Ambierle , elle suit une trajectoire parallèle à la N7 jusqu'à Roanne.
* Dans Roanne, elle tournait plein est, croisait la N7 dans la zone industriel puis longeait l'Oudan jusqu'à la Loire.
* À partir de la Loire, elle tournait franchement vers le sud et gardait ce cap jusqu'au poste électrique de Roanne.

## La ligne de nos jours:

Il ne reste plus grand chose de cette ligne aujourd'hui, à part un tronçon de 10km de Marcenat au poste de Bayet et un autre de 11 km entre Riorges et Ambierle.

Cette dernière section a été réhabilitée entre Juin et Septembre 2019, les travaux consistants à remplacer 14 pylônes et les conducteurs âgés de presque 90 ans. Pour les nouveaux supports, le mainteneur a conservé l'architecture d'origine, très caractéristique du réseau 150 000 volts des années 1930 dans la région.

## Tronçon réutilisés pour la création de nouvelles lignes:

1. Ligne 225 KV - (Bayet-Billy)
2. Ligne 63 KV - (La Font-Saint-Prix)
3. Ligne 63 KV - (Roanne-Changy )
4. Ligne 63 KV - (Riorges-Changy )