BCN Main Line
Encyclopedia
The BCN Main Line, or Birmingham Canal Navigations Main Line describes the evolving route of the Birmingham Canal between Birmingham
Birmingham
Birmingham is a city and metropolitan borough in the West Midlands of England. It is the most populous British city outside the capital London, with a population of 1,036,900 , and lies at the heart of the West Midlands conurbation, the second most populous urban area in the United Kingdom with a...

 and Wolverhampton
Wolverhampton
Wolverhampton is a city and metropolitan borough in the West Midlands, England. For Eurostat purposes Walsall and Wolverhampton is a NUTS 3 region and is one of five boroughs or unitary districts that comprise the "West Midlands" NUTS 2 region...

 in England
England
England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

.

The name Main Line was used to distinguish the main Birmingham to Wolverhampton route from the many other canals and branches built or acquired by the Birmingham Canal Navigations
Birmingham Canal Navigations
Birmingham Canal Navigations is a network of navigable canals connecting Birmingham, Wolverhampton, and the eastern part of the Black Country...

 company.

BCN Old Main Line

On 24 January 1767 a number of prominent Birmingham businessmen, including Matthew Boulton
Matthew Boulton
Matthew Boulton, FRS was an English manufacturer and business partner of Scottish engineer James Watt. In the final quarter of the 18th century the partnership installed hundreds of Boulton & Watt steam engines, which were a great advance on the state of the art, making possible the...

 and others from the Lunar Society
Lunar Society
The Lunar Society of Birmingham was a dinner club and informal learned society of prominent figures in the Midlands Enlightenment, including industrialists, natural philosophers and intellectuals, who met regularly between 1765 and 1813 in Birmingham, England. At first called the Lunar Circle,...

,

held a public meeting in the White Swan, High Street, Birmingham

to consider the possibility of building a canal from Birmingham to the Staffordshire and Worcestershire Canal
Staffordshire and Worcestershire Canal
The Staffordshire and Worcestershire Canal is a narrow navigable canal in the English Midlands, passing through the counties of Staffordshire and Worcestershire....

 near Wolverhampton
Wolverhampton
Wolverhampton is a city and metropolitan borough in the West Midlands, England. For Eurostat purposes Walsall and Wolverhampton is a NUTS 3 region and is one of five boroughs or unitary districts that comprise the "West Midlands" NUTS 2 region...

, taking in the coalfields of the Black Country
Black Country
The Black Country is a loosely defined area of the English West Midlands conurbation, to the north and west of Birmingham, and to the south and east of Wolverhampton. During the industrial revolution in the 19th century this area had become one of the most intensely industrialised in the nation...

. They commissioned the canal engineer
Canal engineer
A canal engineer is a civil engineer responsible for planning related to the construction of a canal.The names of canal engineers include:* James Brindley* James Dadford* John Dadford* Thomas Dadford* Thomas Dadford, Jr....

 James Brindley
James Brindley
James Brindley was an English engineer. He was born in Tunstead, Derbyshire, and lived much of his life in Leek, Staffordshire, becoming one of the most notable engineers of the 18th century.-Early life:...

 to propose a route. Brindley came back with a largely level route via Smethwick
Smethwick
Smethwick is a town in the Metropolitan Borough of Sandwell, in the West Midlands of England. It is situated on the edge of the city of Birmingham, within the historic boundaries of Staffordshire, Worcestershire and Warwickshire....

, Oldbury
Oldbury, West Midlands
Oldbury is a town in the West Midlands in England. It is a part of the Black Country and the administrative centre of the borough of Sandwell.-Local government:...

, Tipton
Tipton
Tipton is a town in the Sandwell borough of the West Midlands, England, with a population of around 47,000. Tipton is located about halfway between Birmingham and Wolverhampton. It is a part of the West Midlands conurbation and is a part of the Black Country....

, Bilston
Bilston
Bilston is a town in the English county of West Midlands, situated in the southeastern corner of the City of Wolverhampton. Three wards of Wolverhampton City Council cover the town: Bilston East and Bilston North, which almost entirely comprise parts of the historic Borough of Bilston, and...

 and Wolverhampton to Aldersley.

On 24 February 1768 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...

 was passed to allow the building of the canal, with branches at Ocker Hill
Ocker Hill
Ocker Hill is a residential area of Tipton in the West Midlands of England.It is situated in the northern part of the town, on the main A461 road between Dudley and Wednesbury...

 and Wednesbury
Wednesbury
Wednesbury is a market town in England's Black Country, part of the Sandwell metropolitan borough in West Midlands, near the source of the River Tame. Similarly to the word Wednesday, it is pronounced .-Pre-Medieval and Medieval times:...

 where there were coal mines. The Staffordshire and Worcestershire company was given the right to make the connection to their canal if the Birmingham company failed to do so within six months of opening. On 2 March Brindley was appointed engineer
Canal engineer
A canal engineer is a civil engineer responsible for planning related to the construction of a canal.The names of canal engineers include:* James Brindley* James Dadford* John Dadford* Thomas Dadford* Thomas Dadford, Jr....

. The first phase of building was to Wednesbury whereupon the price of coal sold to domestic households in Birmingham halved overnight. Vested interests of the sponsors caused the creation of two terminal wharves in Birmingham. The 1772 Newhall Branch and wharf (now built upon) originally extended north of, and parallel to Great Charles Street. The 1773 Paradise Street Branch split off at Old Turn Junction
Old Turn Junction
Old Turn Junction is a canal junction in Birmingham, England, where the Birmingham and Fazeley Canal meets the Birmingham Canal Navigations Main Line Canal....

 and headed through Broad Street Tunnel
Broad Street, Birmingham
Broad Street is a major thoroughfare and popular nightspot in Birmingham City Centre, United Kingdom. Traditionally, Broad Street was considered to be outside Birmingham City Centre, but as the city centre expanded with the removal of the Inner Ring Road, Broad Street has been incorporated into...

, turned left at what is now Gas Street Basin
Gas Street Basin
Gas Street Basin is a canal basin in the centre of Birmingham, England, where the Worcester and Birmingham Canal meets the BCN Main Line. It is located on Gas Street, off Broad Street, and between the Mailbox and Brindleyplace canal-side developments....

 and under Bridge Street to wharves on a tuning fork-shaped pair of long basins: Paradise Wharf, also called Old Wharf. The Birmingham Canal Company head office was finally built there, opposite the western end of Paradise Street
Paradise Street
Paradise Street is a short street in the Core area of Birmingham City Centre in England. Paradise Street runs roughly from Victoria Square to Suffolk Street and Broad Street...

.

By 6 November 1769, 10 miles (16.1 km) had been completed to Hill Top collieries in West Bromwich
West Bromwich
West Bromwich is a town within the Metropolitan Borough of Sandwell, in the West Midlands, England. It is north west of Birmingham lying on the A41 London-to-Birkenhead road. West Bromwich is part of the Black Country...

, with a one mile summit pound at Smethwick. Brindley had tried to dig a cutting through the hill at Smethwick but had encountered ground too soft to cope with. The canal rose through six narrow (7 ft) locks to the summit level and descended through another six at Spon Lane. Water was brought from purpose-built reservoirs: Smethwick Great Reservoir (now built upon, holding 1514 locks of water), another smaller pool at Smethwick (holding 500 locks), and then from Titford Pool to supply the summit level.

In 1770 work started towards Wolverhampton. On 21 September 1772 the canal was joined with the Staffordshire and Worcestershire Canal at Aldersley Junction
Aldersley Junction
Aldersley Junction is the name of the canal junction where the Birmingham Main Line Canal terminates and meets the Staffordshire and Worcestershire Canal near to Oxley, north Wolverhampton, West Midlands, England....

 via another 20 locks (increased to 21 in 1784 to save water).
Brindley died a few days later. The canal measured 22 miles and 5 furlong
Furlong
A furlong is a measure of distance in imperial units and U.S. customary units equal to one-eighth of a mile, equivalent to 220 yards, 660 feet, 40 rods, or 10 chains. The exact value of the furlong varies slightly among English-speaking countries....

s (22⅝ miles), mostly following the contour of the land but with deviations to factories and mines in the Black Country
Black Country
The Black Country is a loosely defined area of the English West Midlands conurbation, to the north and west of Birmingham, and to the south and east of Wolverhampton. During the industrial revolution in the 19th century this area had become one of the most intensely industrialised in the nation...

 and Birmingham. A branch led to Matthew Boulton's Soho Manufactory
Soho Manufactory
The Soho Manufactory was an early factory which pioneered mass production on the assembly line principle, in Soho, Smethwick, England, during the Industrial Revolution.-Beginnings:...

.

Water shortage

The original Birmingham Canal was extremely successful but there was a problem with supplying sufficient water to the Smethwick Summit. Matthew Boulton's partner, James Watt, had just patented an improvement to the steam engine
Steam engine
A steam engine is a heat engine that performs mechanical work using steam as its working fluid.Steam engines are external combustion engines, where the working fluid is separate from the combustion products. Non-combustion heat sources such as solar power, nuclear power or geothermal energy may be...

 involving an external condenser which improved the efficiency (and therefore reduced the amount of coal needed to run it). Steam engines were constructed at either end of the Smethwick Summit to pump water used in the operation of the locks back to the summit. The Smethwick Engine
Smethwick Engine
The Smethwick Engine is a steam engine made by Boulton and Watt; brought into service in May 1779.Originally, it was one of two engines used to pump water back up to the summit level of the BCN Old Main Line canal at Smethwick, not far from the Soho Foundry where it was made...

 (5 June 1779) pumped water from the Birmingham side of the summit, and another, the Spon Lane Engine (April 1778) operated from the Wolverhampton side.

In 1784, after two years of counter-productive attempts at legislation, the Birmingham and Fazeley Canal Company (created to propose a competitive canal from the coal fields to Birmingham and also a link to the Coventry Canal
Coventry Canal
The Coventry Canal is a navigable narrow canal in the Midlands of England.It starts in Coventry and ends 38 miles north at Fradley Junction, just north of Lichfield, where it joins the Trent and Mersey Canal...

 at Fazeley
Fazeley Junction
Fazeley Junction is the name of the canal junction where the authorised Birmingham and Fazeley Canal terminates and meets the Coventry Canal at Fazeley, near Tamworth, Staffordshire, England....

) merged with the Birmingham Canal Company (ten years later the name of the merged company was changed to the Birmingham Canal Navigations Company) and the Birmingham and Fazeley Canal
Birmingham and Fazeley Canal
The Birmingham and Fazeley Canal is a canal of the Birmingham Canal Navigations in the West Midlands of England. Its purpose was to provide a link between the Coventry Canal and Birmingham and thereby connect Birmingham to London via the Oxford Canal....

 was started. This created an even greater need for water to supply the thirteen locks at Farmer's Bridge and eleven at Aston, all running downhill and taking water out of the Birmingham system.

Smeaton's improvements

There were problems of congestion at Smethwick caused by the time taken to traverse the locks and with supplying sufficient water to the summit level. 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...

 was engaged to advise on a solution. He specified a 1000 yard cutting through the top eighteen feet of the summit, eliminating three locks from each end, and doubling the capacity of the descent at Smethwick locks by building a parallel flight of three locks, in use until the 1960s. The changes were made in two phases with a new cut to the side to remove two locks from each end and lower the summit by twelve feet, and then another parallel cut another six feet lower, removing another lock at each end and the provision of a parallel set of three locks at the Smethwick end. In 1790, after 2½ years the cutting was completed. The canal was closed for only 14 days. The lowered summit was at the Wolverhampton Level and simplified water supply. Water was also pumped from several local coal mines. The Spon Lane engine was removed and sold but the Smethwick Engine continued to be used to pump used water from the Birmingham Level.

BCN New Main Line

Over the next thirty years, as more canals and branches were built or connected it became necessary to review the long, winding, narrow Old Main Line. With a single towpath boats passing in opposite directions had to negotiate their horses and ropes. As traffic grew the locks at Smethwick Summit were still a constriction.

In 1824 Thomas Telford
Thomas Telford
Thomas Telford FRS, FRSE was a Scottish civil engineer, architect and stonemason, and a noted road, bridge and canal builder.-Early career:...

 was commissioned to examine alternatives. He famously travelled the route of the Old Line and reported the existing canal as:

"… little more than a crooked ditch, with scarcely the appearance of a towing path, the horses frequently sliding and staggering in the water, the hauling lines sweeping the gravel into the canal, and the entanglement at the meeting of boats being incessant; whilst at the locks at each end of the short summit at Smethwick, crowds of boatmen were always quarrelling, or offering premiums for the preference of passage; the mine owners injured by the delay, were loud in their just complaints."

Telford proposed major changes to the section between Birmingham and Smethwick, widening and straightening the canal, providing towpaths on each side, and cutting through Smethwick Summit to bypass the locks, allowing lock-free passage from Birmingham to Tipton. Telford's proposals were swayed by the threat of a new Birmingham to Liverpool
Liverpool
Liverpool is a city and metropolitan borough of Merseyside, England, along the eastern side of the Mersey Estuary. It was founded as a borough in 1207 and was granted city status in 1880...

 railway.
His suggestions were accepted and he was appointed chief engineer on 28 June 1824.

By 1827 the New Main Line passed straight through, and linked to, the loops of the Old Main Line, creating Oozells Loop, Icknield Port Loop, Soho Loop, Cape Loop and Soho Foundry Loop, allowing continued access to the existing factories and wharves.

A year earlier he had built an improved Rotton Park Reservoir (Edgbaston Reservoir
Edgbaston Reservoir
Edgbaston Reservoir, originally known as Rotton Park Reservoir and referred to in some early maps as Rock Pool Reservoir, is a canal feeder reservoir in the Ladywood district of Birmingham, England...

) on the site of an existing fish pool, bringing its capacity to 300 million impgals (1,363,827 m³). A canal feeder took water to, and along, a raised embankment on the south side of the New Main Line to his new Engine Arm
Engine Arm
The Engine Arm or Birmingham Feeder Arm near Smethwick, West Midlands, England, is a short canal built by Thomas Telford in 1825 to carry water from Rotton Park Reservoir to the Old Main Line of the BCN Main Line Canal....

 branch canal and across an elegant cast iron aqueduct to top up the higher Wolverhampton Level at Smethwick Summit. The reservoir also fed water to the Birmingham Level at the adjacent Icknield Port Loop.

The Smethwick Summit was bypassed by 71 ft cutting through Lunar Society member, Samuel Galton's
Samuel Galton, Jr.
Samuel "John" Galton Jr. FRS , born in Duddeston, Birmingham, England. Despite being a Quaker he was an arms manufacturer. He was a member of the Lunar Society and lived at Great Barr Hall.He married Lucy Barclay...

 land, creating the Galton Valley, 70 feet deep and 150 feet wide, running parallel to the Old Main Line. Telford's changes here were completed in 1829.

Telford designed a cast iron bridge, the Galton Bridge
Galton Bridge
Galton Bridge is a canal bridge in Smethwick, West Midlands, England built by Thomas Telford in 1829. It spans Telford's Birmingham Canal Navigations New Main Line carrying Roebuck Lane. When it was constructed, its single span of 151 feet was the highest in the world . Originally a road bridge...

, to span his cutting. It was cast in the Horseley Iron Works, as was the Engine Arm Aqueduct and many of the wide roving bridge
Roving bridge
A roving bridge, changeline bridge or turnover bridge is a bridge over a canal constructed to allow a horse towing a boat to cross the canal when the towpath changes sides...

s.

In 1837, after Telford's death, a new section of his planned canal was opened together with the 360 yard Coseley Tunnel, complete with double towpath, cutting out the long detour around Coseley
Coseley
Coseley is a town located mostly within the Metropolitan Borough of Dudley in the English West Midlands. Part of the Black Country, it lies south east of Wolverhampton and north of Dudley....

 and Wednesbury Oak, and therefore relegating it as the Wednesbury Oak Loop
Wednesbury Oak Loop
The Wednesbury Oak Loop, sometimes known as the Bradley Arm, is a canal in the West Midlands, England. It is part of the Birmingham Canal Navigations ....

. As with many of the branch canals on the BCN, most of the Wednesbury Oak Loop became officially abandoned from 1954, but the northern stretch remains navigable to the British Waterways
British Waterways
British Waterways is a statutory corporation wholly owned by the government of the United Kingdom, serving as the navigation authority in England, Scotland and Wales for the vast majority of the canals as well as a number of rivers and docks...

 workshops at Bradley
Bradley, West Midlands
Bradley was originally a village in the Manor of Sedgley, England. Nowadays it is situated in the Bilston East ward of Wolverhampton City Council....

.
By 1838 the New Main Line was complete: 22⅝ miles of slow canal reduced to 15⅝; between Birmingham and Tipton, a lock-free dual carriageway. It was also called the Island Line as it was cut straight through the hill at Smethwick known as the Island.

Later

In 1892 the Smethwick Engine was replaced by a new pumping house between the old and new canals, just north of Brasshouse Lane Bridge in Smethwick.

Late in the 20th century, a pair of concrete tunnels near Galton Bridge were built to carry the Telford Way road.

Ryland Aqueduct, carrying the canal over the main A461 road
A461 road
The A461 is a main road in Great Britain that links Lichfield in Staffordshire, with Stourbridge, West Midlands, passing through Walsall & Dudley.-Places along the route:* Lichfield* Walsall* M6 motorway * Wednesbury* Tipton* Great Bridge...

 at Dudley Port, Tipton
Tipton
Tipton is a town in the Sandwell borough of the West Midlands, England, with a population of around 47,000. Tipton is located about halfway between Birmingham and Wolverhampton. It is a part of the West Midlands conurbation and is a part of the Black Country....

, was rebuilt in the late 1960s. In 1990, its bare concrete structure was painted blue and white and included an image of a canal barge crossing an old-fashioned brick aqueduct.

The Smethwick Summit - Galton Valley Conservation Area protects the Old and New lines between the Birmingham city boundary and Spon Lane locks.

Junctions

Other features

See also

  • Canals of Great Britain
  • History of the British canal system
    History of the British canal system
    The British canal system of water transport played a vital role in the United Kingdom's Industrial Revolution at a time when roads were only just emerging from the medieval mud and long trains of pack horses were the only means of "mass" transit by road of raw materials and finished products The...

  • Waterscape
    Waterscape
    Waterscape was set up in the summer of 2003 and is British Waterways leisure website, supported by the Environment Agency and the Broads Authority as an official information and leisure resource for inland waterways within the UK....


External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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