Skerton Bridge
Encyclopedia
Skerton Bridge is a road bridge carrying the southbound lanes of the A6 road over the River Lune
River Lune
The River Lune is a river in Cumbria and Lancashire, England.It is formed at Wath, in the parish of Ravenstonedale, Cumbria, at the confluence of Sandwath Beck and Weasdale Beck...

 in Lancaster
Lancaster, Lancashire
Lancaster is the county town of Lancashire, England. It is situated on the River Lune and has a population of 45,952. Lancaster is a constituent settlement of the wider City of Lancaster, local government district which has a population of 133,914 and encompasses several outlying towns, including...

, Lancashire
Lancashire
Lancashire is a non-metropolitan county of historic origin in the North West of England. It takes its name from the city of Lancaster, and is sometimes known as the County of Lancaster. Although Lancaster is still considered to be the county town, Lancashire County Council is based in Preston...

, England. The bridge has been designated by English Heritage
English Heritage
English Heritage . is an executive non-departmental public body of the British Government sponsored by the Department for Culture, Media and Sport...

 as a Grade II* listed building.

History

Towards the end of 18th century the old medieval
Middle Ages
The Middle Ages is a periodization of European history from the 5th century to the 15th century. The Middle Ages follows the fall of the Western Roman Empire in 476 and precedes the Early Modern Era. It is the middle period of a three-period division of Western history: Classic, Medieval and Modern...

 bridge over the River Lune was becoming inadequate for its purpose. A petition was made for an Act of Parliament
Act of Parliament
An Act of Parliament is a statute enacted as primary legislation by a national or sub-national parliament. In the Republic of Ireland the term Act of the Oireachtas is used, and in the United States the term Act of Congress is used.In Commonwealth countries, the term is used both in a narrow...

 to allow for the building of a new bridge at a more convenient site; this was passed in June 1782. A competition was held for the design of the new bridge, which was won by Thomas Harrison
Thomas Harrison (architect)
Thomas Harrison was an English architect and engineer. He built a number of bridges, including Grosvenor Bridge in Chester. He also rebuilt parts of Chester and Lancaster castles...

, and was his first major commission. The first stone was laid in June 1783, and the bridge was completed in September 1787; it cost £14,000 (£ as of ). In 1839 repair and repointing of the bridge was supervised by the local architect Edmund Sharpe
Edmund Sharpe
Edmund Sharpe was an English architect and engineer. He started his career as an architect, initially on his own, then in partnership with Edward Paley, designing mainly churches but also some secular buildings...

. An additional arch was added to the south end of the bridge in about 1849 to allow for the passage of the "Little" North Western Railway (since closed) beneath it. It continues to be used as a road bridge, and when it was examined in 1995 it was considered to be strong enough to carry vehicles weighing up to 40 tons—ten times the weight of the heaviest vehicles in 1783.

Architecture

The bridge is constructed in sandstone
Sandstone
Sandstone is a sedimentary rock composed mainly of sand-sized minerals or rock grains.Most sandstone is composed of quartz and/or feldspar because these are the most common minerals in the Earth's crust. Like sand, sandstone may be any colour, but the most common colours are tan, brown, yellow,...

 ashlar
Ashlar
Ashlar is prepared stone work of any type of stone. Masonry using such stones laid in parallel courses is known as ashlar masonry, whereas masonry using irregularly shaped stones is known as rubble masonry. Ashlar blocks are rectangular cuboid blocks that are masonry sculpted to have square edges...

. It consists of five semi-elliptical arches carried on Tuscan
Tuscan order
Among canon of classical orders of classical architecture, the Tuscan order's place is due to the influence of the Italian Sebastiano Serlio, who meticulously described the five orders including a "Tuscan order", "the solidest and least ornate", in his fourth book of Regole generalii di...

-style columns, and has a balustraded
Baluster
A baluster is a moulded shaft, square or of lathe-turned form, one of various forms of spindle in woodwork, made of stone or wood and sometimes of metal, standing on a unifying footing, and supporting the coping of a parapet or the handrail of a staircase. Multiplied in this way, they form a...

 parapet
Parapet
A parapet is a wall-like barrier at the edge of a roof, terrace, balcony or other structure. Where extending above a roof, it may simply be the portion of an exterior wall that continues above the line of the roof surface, or may be a continuation of a vertical feature beneath the roof such as a...

. The semi-elliptical arches allow it to have a flat road deck. Each of the five original arches spans 64 feet (19.5 m), and the deck between the parapets is 33 feet (10.1 m) wide. There are stormwater channels in the spandrel
Spandrel
A spandrel, less often spandril or splaundrel, is the space between two arches or between an arch and a rectangular enclosure....

s between the arches and at the abutments.

Context

Skerton Bridge was the first large public bridge in England to have a horizontal roadway. There had been an earlier bridges elsewhere with this feature, for example Coldstream Bridge
Coldstream Bridge
Coldstream Bridge, linking Coldstream, Scottish Borders with Cornhill-on-Tweed, Northumberland, is an 18th century Grade II* listed bridge between England and Scotland, across the River Tweed. A plaque on the bridge commemorates the 1787 visit of the poet Robert Burns to the Coldstream...

 (1763) in Scotland, designed by John Smeaton
John Smeaton
John Smeaton, FRS, was an English civil engineer responsible for the design of bridges, canals, harbours and lighthouses. He was also a capable mechanical engineer and an eminent physicist...

, and a bridge at Neuilly-sur-Seine
Neuilly-sur-Seine
Neuilly-sur-Seine is a commune in the western suburbs of Paris, France. It is located from the center of Paris.Although Neuilly is technically a suburb of Paris, it is immediately adjacent to the city and directly extends it. The area is composed of mostly wealthy, select residential...

, Paris (1768–74; demolished in 1939) by Jean-Rodolphe Perronet
Jean-Rodolphe Perronet
Jean-Rodolphe Perronet 27 October 1708, Suresnes – 27 February 1794, Paris) was a French architect and structural engineer, known for his many stone arch bridges. His best known work is the Pont de la Concorde .-Life and career:...

. Harrison's design influenced John Rennie in his designs of Kelso Bridge (1803), Waterloo Bridge (1809–17), and London Bridge (1824–31).
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