Liffey

This 19th-century bridge across the River Liffey in Dublin, built for pedestrians only, was soon named the ‘Haypenny’ (Halfpenny) Bridge since a toll of half a penny was charged for all those who wished to cross the river from Bachelor's Walk to Aston Quay.

O'Connell Bridge in central Dublin crosses the River Liffey just north of Trinity College and opens onto O'Connell Street, the city's main thoroughfare. When it was built in 1794–98, it was called Carlisle Bridge, but was renamed in 1882 when the statue of Daniel O'Connell, standing at the foot of the bridge, was unveiled.

The slender dome of the Custom House, Dublin, stands on the north side of the River Liffey and dominates Custom House Quay, a reminder of the economic importance of the Dublin docks. The port of Dublin is the largest in the Republic of Ireland.

Dublin docks, the largest in Ireland, are situated at the mouth of the River Liffey. The docks handle hundreds of thousands of tonnes of freight every year. There are also car ferry services from Dublin to Holyhead, Wales, and to Liverpool, England.

River in the east of the Republic of Ireland; length 129 km/80 mi. The Liffey is formed by two streams that rise in the Wicklow Mountains near Enniskerry. It flows through County Kildare, past Kilcullen and Newbridge, and into Dublin Bay. The Liffey Plain is excellent land for pasture, and has the lowest rainfall in the Republic of Ireland.

The city of Dublin is divided into two by the Liffey, and here there are 14 bridges over the river, including a railway bridge and Ha'penny Bridge, a footbridge erected in 1816 for which tolls were levied until 1919. There is a hydroelectric power station at Golden Falls.