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BCN Main Line

The BCN Main Line, or Birmingham Canal Navigations Main Line describes the evolving route of the Birmingham Canal between Birmingham and Wolverhampton in England

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 company


  • 1 BCN Old Main Line
    • 11 Water shortage
    • 12 Smeaton's improvements
    • 13 Other changes
  • 2 BCN New Main Line
  • 3 Later
  • 4 Features
    • 41 Junctions
    • 42 Other features
  • 5 Gallery
  • 6 See also
  • 7 References
  • 8 External links

BCN Old Main Lineedit

Birmingham Canal Company offices fronting Paradise Street They backed onto the Old Wharf terminus

On 24 January 1767 a number of prominent Birmingham businessmen, including Matthew Boulton and others from the Lunar Society,1 held a public meeting in the White Swan, High Street, Birmingham2 to consider the possibility of building a canal from Birmingham to the Staffordshire and Worcestershire Canal near Wolverhampton, taking in the coalfields of the Black Country They commissioned the canal engineer James Brindley to propose a route Brindley came back with a largely level route via Smethwick, Oldbury, Tipton, Bilston and Wolverhampton to Aldersley13

On 24 February 1768 an Act of Parliament was passed to allow the building of the canal, with branches at Ocker Hill and Wednesbury1 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 opening3 On 2 March3 Brindley was appointed engineer1 The first phase of building was to Wednesbury whereupon the price of coal sold to domestic households in Birmingham halved overnight2 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 and headed through Broad Street Tunnel, turned left at what is now Gas Street Basin 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 Street4

By 6 November 1769, 10 miles 16 km13 had been completed to Hill Top collieries in West Bromwich, 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 with3 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,2 and then from Titford Pool3 to supply the summit level1

In 1770 work started towards Wolverhampton1 On 21 September 17723 the canal was joined with the Staffordshire and Worcestershire Canal at Aldersley Junction via another 20 locks1 increased to 21 in 1784 to save water35 Brindley died a few days later The canal measured 22 miles and 5 furlongs 22⅝ miles,1 mostly following the contour of the land but with deviations to factories and mines in the Black Country and Birmingham A branch led to Matthew Boulton's Soho Manufactory

Water shortageedit

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 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 summit1 The Smethwick Engine 5 June 1779 pumped water from the Birmingham side of the summit, and another, the Spon Lane Engine April 17782 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 at Fazeley merged with the Birmingham Canal Company3 ten years later the name of the merged company was changed to the Birmingham Canal Navigations Company and the Birmingham and Fazeley 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 improvementsedit

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 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,1 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 end3 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

Other changesedit

The Act allowed for branches to extend from the main line, and for private wharves and basins In May 1821 the loop of the main line around Oldbury was bypassed by a straight cut, shortening the route between Birmingham and Wolverhampton6

BCN New Main Lineedit

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 was commissioned to examine alternatives1 He famously travelled the route of the Old Line and reported the existing canal as:2

"… 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 railway1 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 on the site of an existing fish pool, bringing its capacity to 300 million imperial gallons 1,400,000 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 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 cutting1 through Lunar Society member, Samuel Galton's 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 18291

Telford designed a cast iron bridge, the Galton 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 bridges

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,1 cutting out the long detour around Coseley and Wednesbury Oak, and therefore relegating it as the Wednesbury Oak Loop 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 workshops at Bradley7

By 1838 the New Main Line was complete: 22⅝ miles of slow canal reduced to 15⅝;1 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 Island1


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 at Dudley Port, Tipton, 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 aqueduct8

The Smethwick Summit - Galton Valley Conservation Area9 protects the Old and New lines between the Birmingham city boundary and Spon Lane locks10



Other featuresedit

Template:Attached KML/Stour Valley Line KML is from Wikidata


See alsoedit

  • UK Waterways portal
  • Canals of the United Kingdom
  • History of the British canal system
  • Water levels of the Birmingham Canal Navigations
  • Waterscape


  1. ^ a b c d e f g h i j k l m n o p q r Paget-Tomlinson, Edward W 2006 1978 The Illustrated History of Canal & River Navigations Landmark Publishing Ltd ISBN 1-84306-207-0 
  2. ^ a b c d e Smethwick and the BCN, Malcolm D Freeman, 2003, Sandwell MBC and Smethwick Heritage Centre Trust
  3. ^ a b c d e f g h i j Hadfield, Charles Canals of the West Midlands Newton Abbott: David & Charles 
  4. ^ Shill, Ray 1999 Birmingham's Canals Sutton Publishing Ltd ISBN 0-7509-2077-7 
  5. ^ Pearson, Michael 1990 Canal Companion - Midland Rings J M Pearson & Associates ISBN 0-907864-53-8 
  6. ^ Collins, Paul 2001 Black Country Canals Sutton Publishing ISBN 0-7509-2031-9 
  7. ^ Pearson, Michael 1989 Canal Companion - Birmingham Canal Navigations J M Pearson & Associates ISBN 0-907864-49-X 
  8. ^ "Brief History of Tipton" Tipton Civic Society Retrieved 3 May 2012 
  9. ^ Sandwell MBC conservation areas Archived 12 June 2008 at the Wayback Machine
  10. ^ Galton Valley Conservation Area - Review of boundaries
  11. ^ Historic England "Smethwick New Pumping House 219213" Images of England Retrieved 23 April 2015 

External linksedit

  • Coal chutes at Sandwell, before demolition

Coordinates: 52°32′06″N 2°04′46″W / 525351°N 20795°W / 525351; -20795

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BCN Main Line

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