Lucan Bridge

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Lucan Bridge
Droichead Leamhcán
River Liffey and Lucan Bridge
River Liffey and Lucan Bridge
Coordinates 53°21′36″N 6°26′46″W / 53.359959°N 6.446207°W / 53.359959; -6.446207Coordinates: 53°21′36″N 6°26′46″W / 53.359959°N 6.446207°W / 53.359959; -6.446207
Crosses River Liffey
Locale County Dublin
Design Arch bridge
Material Ashlar masonry
Total length 33m
No. of spans 1
Designer George Knowles
Construction end 1814

Lucan Bridge (Irish: Droichead Leamhcán)[1] is a road bridge spanning the River Liffey in the town of Lucan in Dublin, Ireland. It joins Lucan's Main Street to the Lower Lucan Road, carrying traffic towards Clonsilla and the north.

The bridge is the largest single span masonry arch bridge in Ireland,[2] and is constructed from ashlar masonry with a span of 33 metres (110 feet) and a rise of 6.7 metres (22 feet). It is framed by iron balustraded parapets made by the Royal Phoenix ironworks of Parkgate Street in Dublin.[3]

Designed by George Knowles (architect of Dublin's Fr. Mathew and O'Donovan Rossa Bridges), it was built in 1814 in collaboration with James Savage to replace several previous bridges which were carried away by floods.[2]

The first bridge built on this spot was a stone bridge laid down in the later years of the reign of King John (c. 1200). A subsequent bridge was built by the first Agmondisham Vesey c. 1730, but washed away within very short time. The next was built c. 1771, but this too washed away in a flood in 1786 – as did its replacement.[4]

In 1814, the present single-span bridge was completed by Savage & Knowles, and has remained largely unaffected by the effects of flooding common to this stretch of the Liffey. The bridge, however, has seen some recent developments, with the raising of the roadway near both ends of the arch to lessen the gradient for road traffic.[3]


  1. ^ "Droichead Leamhcáin/Lucan Bridge". Database of Placenames of Ireland. Department of Arts, Heritage, Regional, Rural and Gaeltacht Affairs. Retrieved 4 December 2016. 
  2. ^ a b Cox, Ronald C (1998). Civil Engineering Heritage, Ireland. Thomas Telford. ISBN 0-7277-2627-7. 
  3. ^ a b "The Liffey at Lucan". Gerry O'Flynn. 6 May 2000. 
  4. ^ "Lucan Bridge - History". Bridges of Dublin. Dublin City Council. Retrieved 4 December 2016.