Beth oedd cyfanswm y gwariant cyfalaf ar y rhwydwaith drafnidiaeth gan Lywodraeth Cymru ym mhob un o'r 5 mlynedd diwethaf, gan ranbarth etholiadol y Senedd?
Wedi'i ateb gan Y Dirprwy Weinidog Newid Hinsawdd | Wedi'i ateb ar 22/11/2022
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