Mae’r straen sydd ar y seilwaith mewn ardaloedd o Gymru a'r Gororau yn brawf o hyd a lled y diffyg buddsoddiad. Yn ddiau mae hyn wedi effeithio ar ein cynhyrchiant a’n perfformiad economaidd yng Nghymru. Mae hefyd wedi cyfrannu at dagfeydd trafnidiaeth eraill, fel sy’n cael ei ddangos yn glir yn adroddiad dros dro Comisiwn Burns ar dagfeydd o amgylch Twnelau Bryn-glas.
That scale of underinvestment can be seen in the strained infrastructure in many parts of Wales and the Borders, something that has undoubtedly impacted on our productivity and economic performance in Wales, as well as contributed to other transport bottlenecks, as the recent Burns Commission Interim report into congestion around the Brynglas Tunnels so clearly demonstrates.