Mayo County Council has confirmed that the R312 road between Castlebar and Bangor remains closed, as sections of the road are still impassable due to flooding.
Motorists should divert onto the N59 at Bangor for either Newport or Crossmolina direction.
The council say the situation is being closely monitored, while motorists should beware of floods at other locations in the Beltra to Crossmolina area, so any unnecessary journeys should be avoided.
The 316 from the R312 from the Glenavenue area towards Crossmolina is also closed and local roads in the area are flooded.
The Derryfadda road from the Belmullet road over to the Bofeenaun area is impoassable.
In Laherdaun village, tghe R315 is flooded at the church but is passable, with caution, however this situation may deteriorate this evening.
The council says the Aghalonteen road west from Laherdaun village is impassable, as it the road from Beltra crossroads towards Glenhest.
Mayo Co Co is advising that water levels have risen since this morning, and drivers are advised not to enter any flooded areas unless they're sure they will be able to pass through.
Driving through floods may cause damage to engines, and there's a risk the engine may stall.