{"id":30879,"date":"2017-04-27T15:45:26","date_gmt":"2017-04-27T15:45:26","guid":{"rendered":"http:\/\/ygc.cymru\/?post_type=project&p=30879"},"modified":"2022-06-14T13:08:03","modified_gmt":"2022-06-14T13:08:03","slug":"a470-t-maes-yr-helmau-to-cross-foxes-improvement","status":"publish","type":"project","link":"https:\/\/ygc.cymru\/cy\/project\/a470-t-maes-yr-helmau-to-cross-foxes-improvement","title":{"rendered":"A470 Gwelliant o Faes yr Helmau i Cross Foxes"},"content":{"rendered":"

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A470 Gwelliant o Faes yr Helmau i Cross Foxes<\/strong><\/h3>\n

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Cleient:<\/strong><\/td>\n\u00a0Llywodraeth Cymru<\/strong><\/td>\n<\/tr>\n
Contractwr:<\/strong><\/td>\n\u00a0Alun Griffiths (Contractors) Ltd<\/strong><\/td>\n<\/tr>\n
Cost y Cynllun:<\/strong><\/td>\n\u00a0\u00a37.3 milliwn<\/strong><\/td>\n<\/tr>\n
Dyddiad cwbwlhau:<\/strong><\/td>\n\u00a0Hydref 2013<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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Bwriad y Cynllun Gwella ar yr A470 o Faes yr Helmau i’r Cross Foxes oedd lledu\u2019r ffordd a gwella diogelwch ar ran gul o\u2019r brif gefnffordd hon oedd \u00e2 throeon cyfyng a gwelededd cyfyngedig ac nad oedd arni unrhyw ymylon ffordd.<\/h5>\n
Fel rhan o\u2019u r\u00f4l i gynnal Asesiad Effaith Amgylchedd (AEA) o\u2019r cynllun prif gefnffordd hwn, comisiynodd YGC Arolwg Cynefinoedd Cam 1 o goridor y cynllun yn 2002. Bu i\u2019r asesiad adnabod coedwigoedd oedd yn cynnwys cynefin addas ar gyfer y pathew Muscardinus avellanarius<\/em>, sy’n Rhywogaeth Gwarchodedig Ewropeaidd. Arweiniodd hyn at gynnal arolygon yn 2003 a datgelodd rhain bod tair cneuen gyll yn arddangos arwyddion nodedig eu bod yn cael eu hagor gan bathew – un ohonynt yn oedolyn – ym mhen gogledd-orllewinol coridor y cynllun, felly cadarnhawyd bod y goedwig hon ble daethpwyd o hyd i\u2019r dystiolaeth yn gynefin byw i\u2019r pathew. \u00a0\u00a0Yn 2004, cynhaliwyd arolwg ehangach yn yr ardal hon ac o’i chwmpas, a chofnodwyd hen nyth pathew fel rhan o’r gwaith.<\/h5>\n
Gan y byddai cynefin oedd yn cefnogi poblogaeth fyw o bathewod yn cael ei golli yn sgil y cynllun, roedd angen Trwydded Rhywogaethau Gwarchodedig Ewropeaidd, ynghyd \u00e2 mesurau lliniaru a gwneud iawn helaeth. Heb fesurau lliniaru, gallai\u2019r cynllun arwain at farwolaeth pathewod a cholli safleoedd nythu a chynefin bwydo. Roedd angen i unrhyw gamau lliniaru ystyried bioleg y pathew, sy’n famolyn coedol, gan ei fod yn byw yng nghanopi\u2019r coed a\u2019r llwyni yn ystod misoedd yr haf ac yna\u2019n gaeafgysgu yn y ddaear dros y gaeaf.\u00a0 Cynigwyd y camau lliniaru a ganlyn:<\/h5>\n