The A484 is also partially blocked, affecting an area near the garage in CynwylElfed.
BBC: Flooding closes railway and roads
2.
St Clears, CynwylElfed and Llangunnor community councils were among those campaigning for Nantyci, home to the United Counties Show, on the outskirts of Carmarthen.
BBC: NEWS | UK | Wales | South West Wales | Market town wins Urdd tug-of-war