Mae TR111 wedi bod yn ei le i'r de o Gasnewydd ers 1995. Fe'i cadwyd ar ôl i'r Prif Weinidog benderfynu peidio â bwrw ymlaen â Phrosiect yr M4 ac mae'n cael ei ddileu ar ôl i adroddiad terfynol Comisiwn Trafnidiaeth De-ddwyrain Cymru gael ei gyhoeddi.
A TR111 south of Newport has been in place since 1995. It was retained after the First Minister made the decision not to proceed with the M4 Project and is being removed following the publication of the South East Wales Transport Commission’s final report.