Mae’n hanfodol buddsoddi mewn seilwaith cyhoeddus am ddau reswm. Yn gyntaf, mae’n hanfodol i’r economi o ran yr ysgogiad tymor byr a chreu’r amodau hirdymor ar gyfer twf. Yn ail, mae’n hanfodol o ran cynnig y gwasanaethau cyhoeddus modern o safon uchel y mae pobl Cymru yn eu haeddu ac yn disgwyl eu cael.
Investment in public infrastructure is vital for two reasons.  First, it is vital to the economy, both in the short term for the stimulus it provides and in providing the long term conditions for growth.  And second, it is essential to delivery of the modern, high quality public services that people in Wales deserve and expect.