There will also be major improvements on the strategic corridors such as the A55, A40, and M4 to improve connectivity and support planned economic developments.
Bydd gwelliannau mawr hefyd i'r coridorau strategol megis yr A55, yr A40 a'r M4 er mwyn gwella cysylltedd ac i gefnogi datblygiadau economaidd arfaethedig.