R189 road (Ireland)The R189 road is a regional road in Ireland, linking Monaghan Town to Cootehill. The route is long.RouteNorth to south the route starts at the N54 on the western edge of Monaghan Town. It heads southwest for 15 km to its junction with the R183 in Newbliss. It leaves Newbliss heading southeast for 10 km to its termination at the R188 two kilometers north of Cootehill, County Cavan. It remains in County Monaghan for its full length.