R403 road (Ireland)

The R403 is a regional road in Ireland, linking Celbridge in County Kildare to the N4 national primary road near Lucan in County Dublin. The road acts as a significant commuter route between the towns of Celbridge, Ardclough, and Newcastle, and provides access to the N4 for residents in these areas.

The R403 begins at a junction with the R405 in Celbridge. It proceeds generally eastwards, passing through or near the settlements of Ardclough and Newcastle. It terminates at a junction with the N4 (M4) motorway near Lucan, providing access to Dublin city centre and the wider national road network.

The road's condition varies along its length, with some sections having been upgraded in recent years to accommodate increased traffic volume. However, sections of the R403 can be subject to congestion, particularly during peak commuting hours.

Improvements to the R403 have been proposed and implemented over time, aimed at enhancing traffic flow and road safety. These improvements typically involve road widening, junction upgrades, and the installation of traffic management measures.