Heritage Locations

Longdon on Tern Aqueduct


The first canal aqueduct to be constructed in cast iron, it was built by Thomas Telford to carry the Shrewsbury Canal across the river Tern. It is listed Grade I and is a scheduled Ancient Monument.

Constructor:
Unclassified

Period of construction:
1750 - 1799

Transport Trust plaque:
No

Transport Mode:
Water

Address:
Longdon on Tern, Telford, shropshire TF6 6

Postcode:
TF6 6

Nearest Town:
Shrewsbury

Heritage Centre:
No

The Shrewsbury Canal (or Shrewsbury and Newport Canal) was a canal in Shropshire. Authorised in 1793, the main line from Trench to Shrewsbury was fully open by 1797, but it remained isolated from the rest of the canal network until 1835, when the Birmingham & Liverpool Junction Canal built the Newport Branch from Norbury Junction to a new junction with the Shrewsbury Canal at Wappenshall. After ownership passed to a series of railway companies, the canal was officially abandoned in 1944; many sections have disappeared, though some bridges and other structures can still be found. There is an active campaign to preserve the remnants of the canal and to restore the Norbury to Shrewsbury line to navigation.

Josiah Clowes was appointed Chief Engineer, but died in 1795 part way through construction. He was succeeded by Thomas Telford, then just establishing himself as Shropshire's County Surveyor and already engaged on the Ellesmere Canal slightly further north.

One of Telford's first tasks was to rebuild a stone aqueduct over the River Tern at Longdon-on-Tern which had been built by Clowes but swept away by floods in February 1795. Telford's stone-mason instincts initially led him to consider replacing the original structure with another stone-built aqueduct, but the heavy involvement of iron-masters in the Shrewsbury Canal Company, notably William Reynolds, led him to reconsider. Instead, it was rebuilt using a 62-yard (57 m) cast iron trough cast in sections at Reynolds' Ketley ironworks and bolted together in 1796. The main trough was 7.5 feet (2.3 m) wide and 4.5 feet (1.4 m) deep, with a narrower trough to one side which formed the towpath. The aqueduct was the world's first large-scale iron navigable aqueduct, though it was narrowly predated by a much smaller 44-foot-long (13 m) structure on the Derby Canal built by Benjamin Outram.

The aqueduct still stands today, though it is isolated in the middle of a field. This successful use of an iron trough to contain the water of a navigable aqueduct casts the Tern aqueduct in the role of Telford's prototype for the much longer Pontcysyllte Aqueduct on the Llangollen Canal, where he mounted the iron trough on high masonry arches.


Bibliography:
Atterbury, Paul, English Rivers and Canals, Weidenfeld & Nicolson, ISBN. 0 297 78318 1 (1984)

Bartholomew, Nicholson Inland Waterways Map of Great Britain, ISBN 978-00072 11173 (2006)

Boughey, Joseph, Hadfield’s British Canals: The Inland Waterways of Britain and Ireland, David & Charles, ISBN 978 18401 50247 (1998)

Boughey, J. and Hadfield, C.,
British Canals: A Standard History, David & Charles, ISBN 978-07524 46677 (2008)

Burton, A., The Waterways of Britain, Collins, ISBN 0 00 218047 2 (1983)

Gladwin, D.D., A Pictorial History of Canals, Batsford, ISBN 0 7134 0554 6 (1977)

Pratt, D., Waterways Past and Present: A Unique Record of Britain’s Waterways Heritage, Adlarde Coles, ISBN 978-07136 76341 (2006)

Pratt, F., Canal Architecture in Britain, British Waterways, ISBN 978- 09032 18139 (1976)

Roberts, B., Britain’s Waterways: A Unique Insight, GEOprojects, ISBN 978- 08635 11158 (2006)

Rolt, L. T. C.,
Inland Waterways of England, Allen & Unwin, ISBN-10: 0043860060 (1979)

Ware, M.E., Britain’s Lost Commercial Waterways, Landmark, ISBN 978-18430 61816 (2005)


Opening Times:
It is always visible

How To Find:
By Road: It can be seen across the field from the B 5063 east of the road crossing of the river Teme. To approach requires walking and local advice is recommended.

Facilities:
http://weather.msn.com/RSS.aspx?wealocations=wc:UKXX0296&weadegreetype=C


Shrewsbury, GBR - Weather via MSN Weather

Weather conditions and forecast for Shrewsbury, GBR


Current Conditions: Fair in Shrewsbury, GBR (as of 11:00 AM 4/16/2014)

Current conditions (as of 11:00 AM)
Fair
Fair. 10°C (Feels like 10). Humidity: 62% Winds: 22 km/hr SSE.
All times shown are local to Shrewsbury, GBR.
Detailed ten-day forecast   Hourly weather forecast    Weather maps    Weather averages


Forecast for Wednesday, April 16, 2014 for Shrewsbury, GBR

Today: Partly Cloudy.Partly Cloudy Lo: 6°C. Hi: 15°C. Chance of precipitation: 2%
Tomorrow: Sprinkles.Sprinkles Lo: 3°C. Hi: 13°C. Chance of precipitation: 30%
Friday: Partly Cloudy.Partly Cloudy Lo: 1°C. Hi: 13°C. Chance of precipitation: 2%
Saturday: Partly Cloudy.Partly Cloudy Lo: 4°C. Hi: 13°C. Chance of precipitation: 25%
Sunday: Showers / Clear.Showers / Clear Lo: 4°C. Hi: 11°C. Chance of precipitation: 75%

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