bridges around killaloe and scarrif

If you continue southwards from Killaloe towards Limerick you will shortly (6 km) reach the small village of O' Brien's Bridge. There are two bridges here, one of modern construction over the canal, and the older stone bridge over the river. At this point the flow of the river is obstructed by a massive weir. The bulk of the flow is diverted into an artificial canal - the headrace for the hydro-electric works at Ardnacrusha. The remainder follows the old line of the Shannon, much diminshed fro...