John Rennie FRSE FRS was a Scottish civil engineer who designed many bridges, canals, docks and warehouses, and a pioneer in the use of structural cast-iron.
The Aire and Calder Navigation is the canalised section of the Rivers Aire and Calder in West Yorkshire, England. The first improvements to the rivers above Knottingley were completed in 1704 when the Aire was made navigable to Leeds and the Calder to Wakefield, by the construction of 16 locks. Lock sizes were increased several times, as was the depth of water, to enable larger boats to use the system. The Aire below Haddlesey was bypassed by the opening of the Selby Canal in 1778. A canal from Knottingley to the new docks and new town at Goole provided a much shorter route to the River Ouse from 1826. The New Junction Canal was constructed in 1905, to link the system to the River Don Navigation, by then part of the Sheffield and South Yorkshire Navigation.
The canal network of the United Kingdom played a vital role in the Industrial Revolution. The UK was the first country to develop a nationwide canal network which, at its peak, expanded to nearly 4,000 miles in length. The canals allowed raw materials to be transported to a place of manufacture, and finished goods to be transported to consumers, more quickly and cheaply than by a land based route. The canal network was extensive and included feats of civil engineering such as the Anderton Boat Lift, the Manchester Ship Canal, the Worsley Navigable Levels and the Pontcysyllte Aqueduct.
The Barnsley Canal is a canal that ran from Barnby Basin, through Barnsley, South Yorkshire, England to a junction with the Aire and Calder Navigation near Wakefield, West Yorkshire. It was built in the 1790s, to provide a transport link from coal reserves at Barnsley to a wider market. Both the Aire and Calder Navigation and the River Don Navigation took a keen interest in the project, the former buying many of the initial shares, and the latter constructing the Dearne and Dove Canal to link the canal to their waterway. Water supply issues meant that the Aire and Calder proposed pumping all of the water for the canal from the River Calder, using steam pumps, but a reservoir was built at Cold Hiendley instead, increasing the construction costs, but reducing the running costs. The canal as built was 14.5 miles (23.3 km) long and included 15 locks.
The River Weaver is a river, navigable in its lower reaches, running in a curving route anti-clockwise across west Cheshire, northern England. Improvements to the river to make it navigable were authorised in 1720 and the work, which included eleven locks, was completed in 1732. An unusual clause in the enabling Act of Parliament stipulated that profits should be given to the County of Cheshire for the improvement of roads and bridges, but the navigation was not initially profitable, and it was 1775 before the first payments were made. Trade continued to rise, and by 1845, over £500,000 had been given to the county.
The Pontcysyllte Aqueduct is a navigable aqueduct that carries the Llangollen Canal across the River Dee in the Vale of Llangollen in northeast Wales.
William Jessop was an English civil engineer, best known for his work on canals, harbours and early railways in the late 18th and early 19th centuries.
The canals of the United Kingdom are a major part of the network of inland waterways in the United Kingdom. They have a varied history, from use for irrigation and transport, through becoming the focus of the Industrial Revolution, to today's role of recreational boating. Despite a period of abandonment, today the canal system in the United Kingdom is again increasing in use, with abandoned and derelict canals being reopened, and the construction of some new routes. Canals in England and Wales are maintained by navigation authorities. The biggest navigation authorities are the Canal & River Trust and the Environment Agency, but other canals are managed by companies, local authorities or charitable trusts.
Chirk Aqueduct is a 70-foot (21 m) high and 710-foot (220 m) long navigable aqueduct that carries what is now the Llangollen Canal across the Ceiriog Valley near Chirk, on the England-Wales border, spanning the two countries.
Marple Aqueduct at Marple, Greater Manchester, in north-west England was built to carry the lower level of the Peak Forest Canal across the River Goyt.
Navigable aqueducts are bridge structures that carry navigable waterway canals over other rivers, valleys, railways or roads. They are primarily distinguished by their size, carrying a larger cross-section of water than most water-supply aqueducts. Roman aqueducts were used to transport water and were created in Ancient Rome. The 662-metre (2,172 ft) long steel Briare aqueduct carrying the Canal latéral à la Loire over the River Loire was built in 1896. It was ranked as the longest navigable aqueduct in the world for more than a century, until the Magdeburg Water Bridge in Germany took the title in the early 21st century.
Crescent Bridge is a 1,229-foot (375 m) bridge over the Mohawk River and the Erie Canal. It is in Crescent, New York, a hamlet in the town of Halfmoon in southern Saratoga County on the northern side of the Mohawk River. The Crescent Bridge carries U.S Route 9 over the Mohawk River between the towns of Colonie in Albany County and Halfmoon.
Cosgrove aqueduct is a navigable cast iron trough navigable aqueduct that carries the Grand Union Canal over the River Great Ouse, on the borders between Buckinghamshire and Northamptonshire at the northwest margin of Milton Keynes in England. The present structure was built in 1811, to replace a previous brick structure that had failed. When the present structure was erected, it was known as the "Iron Trunk". The structure has two cast iron trough spans, with a single central masonry pier. The abutments were constructed in masonry but have been refaced in brick during the twentieth century. The trough is 15 feet (4.6 m) wide, 6 ft 6 in (1.98 m) deep, with a total length of 101 feet (31 m). The canal surface is about 40 feet (12 m) above the surface of the river. There are large approach earthworks about 36 feet (11 m) high above the valley floor and 150 feet (46 m) wide, with a total length of half a mile (800m).
The Engine Arm Aqueduct near Smethwick, West Midlands, England, was built in 1825 by Thomas Telford to carry a water feeder, the Engine Arm, from Edgbaston Reservoir over the BCN New Main Line canal to the adjacent and parallel Old Main Line. It is a Scheduled Ancient Monument and is Grade II* listed.
The Selby Canal is a 6-mile (9.7 km) canal with 2 locks which bypasses the lower reaches of the River Aire in Yorkshire, England, from the village of West Haddlesey to the town of Selby where it joins the River Ouse. It opened in 1778, and provided the main outlet for the Aire and Calder Navigation until 1826, when it was bypassed by a new cut from Ferrybridge to Goole. Selby steadily declined after that, although traffic to York still used the canal.
The River Don Navigation was the result of early efforts to make the River Don in South Yorkshire, England, navigable between Fishlake and Sheffield. The Dutch engineer Cornelius Vermuyden had re-routed the mouth of the river in 1626, to improve drainage, and the new works included provision for navigation, but the scheme did not solve the problem of flooding, and the Dutch River was cut in 1635 to link the new channel to Goole. The first Act of Parliament to improve navigation on the river was obtained in 1726, by a group of Cutlers based in Sheffield; the Corporation of Doncaster obtained an Act in the following year for improvements to the lower river. Locks and lock cuts were built, and, by 1751, the river was navigable to Tinsley.
The Almond Aqueduct, also known as the Lin's Mill Aqueduct, is a navigable aqueduct that carries the Union Canal over the River Almond in Scotland, west of Ratho, Edinburgh.
The Slateford Aqueduct is a navigable aqueduct that carries the Union Canal over the Water of Leith at Slateford, Edinburgh, Scotland. Completed in 1822, it has eight arches and spans a length of 500 feet (150 m).
The Avon Aqueduct is a navigable aqueduct that carries the Union Canal over the River Avon, near Linlithgow, Scotland.
Nantwich Aqueduct is a navigable aqueduct in Acton in Cheshire, England, which carries the Shropshire Union Canal over the Chester to Nantwich road. Designed by Thomas Telford, it dates from around 1826 and is listed at grade II*.
