Horkstow Bridge
Encyclopedia
Horkstow Bridge is a suspension bridge
Suspension bridge
A suspension bridge is a type of bridge in which the deck is hung below suspension cables on vertical suspenders. Outside Tibet and Bhutan, where the first examples of this type of bridge were built in the 15th century, this type of bridge dates from the early 19th century...

 that spans the New River Ancholme
River Ancholme
The River Ancholme is a river in North Lincolnshire, England, and a tributary of the Humber estuary.It rises south of Bishopbridge and passes through many Lincolnshire villages and the market town of Brigg before flowing north into the Humber at South Ferriby.North of Bishopbridge, where the River...

 near the village of Horkstow
Horkstow
Horkstow is a village and civil parish in North Lincolnshire, England, south-west from Barton-Upon-Humber, south from South Ferriby and north from Brigg. It lies on the B1204, and east from the navigable River Ancholme...

 in North Lincolnshire
North Lincolnshire
North Lincolnshire is a unitary authority area in the region of Yorkshire and the Humber in England. For ceremonial purposes it is part of Lincolnshire....

. It was designed by Sir John Rennie as part of the River Ancholme Drainage Scheme, completed in 1836, and is a Grade II* listed building.

History and description

The River Ancholme
River Ancholme
The River Ancholme is a river in North Lincolnshire, England, and a tributary of the Humber estuary.It rises south of Bishopbridge and passes through many Lincolnshire villages and the market town of Brigg before flowing north into the Humber at South Ferriby.North of Bishopbridge, where the River...

 rises south of Bishopbridge in North Lincolnshire
North Lincolnshire
North Lincolnshire is a unitary authority area in the region of Yorkshire and the Humber in England. For ceremonial purposes it is part of Lincolnshire....

, flows northwards through the town of Brigg
Brigg
Brigg is a small market town in North Lincolnshire, England, with a population of 5,076 in 2,213 households . The town lies at the junction of the River Ancholme and east-west transport routes across northern Lincolnshire...

 and the Ancholme Level, an area of fen
Fen
A fen is a type of wetland fed by mineral-rich surface water or groundwater. Fens are characterised by their water chemistry, which is neutral or alkaline, with relatively high dissolved mineral levels but few other plant nutrients...

land, and enters the Humber
Humber
The Humber is a large tidal estuary on the east coast of Northern England. It is formed at Trent Falls, Faxfleet, by the confluence of the tidal River Ouse and the tidal River Trent. From here to the North Sea, it forms part of the boundary between the East Riding of Yorkshire on the north bank...

 at Ferriby Sluice
Ferriby Sluice
Ferriby Sluice is a hamlet situated near the lock complex on the Humber and River Ancholme, Lincolnshire, England.It is now part of the village of South Ferriby but once stood alone in its own right...

. Attempts were made to drain the wetland and improve the navigability of the river as early as the 13th century, and in the 1630s Sir John Monson constructed the first sluice
Sluice
A sluice is a water channel that is controlled at its head by a gate . For example, a millrace is a sluice that channels water toward a water mill...

 gates near South Ferriby
South Ferriby
South Ferriby is a village in North Lincolnshire, England situated on the south bank of the Humber Estuary 5 km west of the Humber Bridge and directly opposite North Ferriby on the Estuary’s north bank. It currently has a population of around 600 people.-History:It dates back at least to Roman...

 and a new straight channel, the Ancholme Navigation, to drain the Level and protect the town of Brigg from flooding. A 1767 Act of Parliament authorised works towards "the more effectual draining the Lands lying in the Level of Ancholme" and making the river navigable as high as Bishopbridge, to be financed by a land tax and the imposition of tolls on goods carried. Two further Acts followed to enlarge the powers of the first. Under the 1825 Act, Sir John Rennie proposed the New River Ancholme Drainage Scheme, by which the navigation, or New River Ancholme, was straightened, widened and deepened, existing small bridges with many arches were replaced by single-span structures, and the locks
Lock (water transport)
A lock is a device for raising and lowering boats between stretches of water of different levels on river and canal waterways. The distinguishing feature of a lock is a fixed chamber in which the water level can be varied; whereas in a caisson lock, a boat lift, or on a canal inclined plane, it is...

 at Ferriby Sluice were enlarged.

Horkstow Bridge, the only suspension bridge
Suspension bridge
A suspension bridge is a type of bridge in which the deck is hung below suspension cables on vertical suspenders. Outside Tibet and Bhutan, where the first examples of this type of bridge were built in the 15th century, this type of bridge dates from the early 19th century...

 designed by Rennie, is one of several bridges built as part of that project. The ironwork was supplied by Messrs John and Edward Walker of Gospel Oak Ironworks, 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....

, Staffordshire
Staffordshire
Staffordshire is a landlocked county in the West Midlands region of England. For Eurostat purposes, the county is a NUTS 3 region and is one of four counties or unitary districts that comprise the "Shropshire and Staffordshire" NUTS 2 region. Part of the National Forest lies within its borders...

, and the bridge was completed in 1836 under the supervision of site engineer Adam Smith. At each end of the bridge are rusticated
Rustication (architecture)
thumb|upright|Two different styles of rustication in the [[Palazzo Medici-Riccardi]] in [[Florence]].In classical architecture rustication is an architectural feature that contrasts in texture with the smoothly finished, squared block masonry surfaces called ashlar...

 stone piers in the form of 6.5 m (21.3 ft) towers which form archways above the road. The single span measures 42.6 m (139.8 ft) from centre to centre of the masonry towers and the entrance to the bridge deck through the archways is 3.5 m (11.5 ft) wide. The deck is 4.3 m (14.1 ft) wide between the rails, surfaced with wooden planks, supported by timber
Lumber
Lumber or timber is wood in any of its stages from felling through readiness for use as structural material for construction, or wood pulp for paper production....

 crossbeams suspended from double wrought-iron chains, and is distinctly arched. At normal water levels there is 4.7 metre clearance beneath the bridge.

It is about 1.1 miles (1.8 km) upstream from Ferriby Sluice and links the villages of Horkstow
Horkstow
Horkstow is a village and civil parish in North Lincolnshire, England, south-west from Barton-Upon-Humber, south from South Ferriby and north from Brigg. It lies on the B1204, and east from the navigable River Ancholme...

, east of the river, and Winterton
Winterton, Lincolnshire
Winterton is a small town in North Lincolnshire, England, north-east of Scunthorpe. Taking into account the five years since the last UK census, the population currently stands at approximately 4,700 people. Major north-south/east-west streets of Winterton are Market Street and Northlands Road...

 on the west. A ferry
Ferry
A ferry is a form of transportation, usually a boat, but sometimes a ship, used to carry primarily passengers, and sometimes vehicles and cargo as well, across a body of water. Most ferries operate on regular, frequent, return services...

 had previously connected the villages, and it is believed a bridge had occupied the site from the 18th century, providing access to the brick
Brick
A brick is a block of ceramic material used in masonry construction, usually laid using various kinds of mortar. It has been regarded as one of the longest lasting and strongest building materials used throughout history.-History:...

-making kilns located on the Winterton side. The bridge is open to vehicles, but movement can be felt even under pedestrian traffic. It can be approached from the east via Bridge Lane, a narrow road which leaves the B1204 just north of Horkstow, but on the west bank only a dirt track remains.

Horkstow is one of "only a handful" of early suspension bridges in Britain to remain as originally designed, but it has not survived completely unscathed. In 1979, repairs were needed after the tractor unit
Tractor unit
A tractor unit, prime mover , road tractor, or traction unit is a heavy-duty commercial vehicle within the large goods vehicle category, usually with a large displacement diesel engine, and several axles. The tractor unit serves as a method of moving trailers...

 of a 23-ton articulated lorry
Semi-trailer truck
A semi-trailer truck, also known as a semi, tractor-trailer, or articulated truck or articulated lorry, is an articulated vehicle consisting of a towing engine , and a semi-trailer A semi-trailer truck, also known as a semi, tractor-trailer, or (in the United Kingdom and Ireland) articulated truck...

 fell through into the river, destroying a quarter of the bridge deck and damaging the attached suspension rods, though the rest of the structure remained intact. In the 1990s, the bridge was strengthened – the deck relaid using a tropical hardwood timber to support a 5 t load and the underground parts of the suspension chains replaced with high-tensile
Tensile strength
Ultimate tensile strength , often shortened to tensile strength or ultimate strength, is the maximum stress that a material can withstand while being stretched or pulled before necking, which is when the specimen's cross-section starts to significantly contract...

 bars – while retaining its appearance and functionality. The works earned engineers C Spencer Ltd a commendation in the 1999 Institution of Civil Engineers
Institution of Civil Engineers
Founded on 2 January 1818, the Institution of Civil Engineers is an independent professional association, based in central London, representing civil engineering. Like its early membership, the majority of its current members are British engineers, but it also has members in more than 150...

 Historic Bridge Awards.

Although open to motor traffic, it is mostly used by ramblers, cyclists and anglers. It is owned by the Environment Agency
Environment Agency
The Environment Agency is a British non-departmental public body of the Department for Environment, Food and Rural Affairs and an Assembly Government Sponsored Body of the Welsh Assembly Government that serves England and Wales.-Purpose:...

, and in September 1979 was listed at Grade II* , a grading which covers "particularly important buildings of more than special interest". The site of the former brickyard is a Site of Nature Conservation Interest
Site of Nature Conservation Interest
Site of Nature Conservation Interest is a designation used in many parts of the United Kingdom to protect areas of importance for wildlife and geology at a county scale...

.
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