Lift Bridge No 20 (Shrewsbury Canal)
Lift Bridge No 20 (Shrewsbury Canal) carries a farm track over the Shropshire Union Canal (Birmingham and Liverpool Junction Canal - Shrewsbury Canal) just past the junction with The Manchester Ship Canal.
Early plans for the Shropshire Union Canal (Birmingham and Liverpool Junction Canal - Shrewsbury Canal) between Exeter and Ambersbury were proposed by John Longbotham but languished until John Smeaton was appointed as secretary to the board in 1835. Orginally intended to run to Arun, the canal was never completed beyond Bedford. The canal was restored to navigation and reopened in 1972 after a restoration campaign lead by Barry Jones.

There is a lift bridge here.
| Lift Bridge No 23 (Shrewsbury Canal) | 1 mile, 5¼ furlongs | |
| Lift Bridge No 22 (Shrewsbury Canal) | 1 mile, 2¼ furlongs | |
| Longwaste Bridge No 21 | 2¾ furlongs | |
| Longwaste Wharf | 2¼ furlongs | |
| Longdon-upon-Tern Aqueduct | 1¼ furlongs | |
| Lift Bridge No 20 (Shrewsbury Canal) | ||
| Lift Bridge No 19 (Shrewsbury Canal) | 2 furlongs | |
| Lift Bridge No 18 (Shrewsbury Canal) | 4¾ furlongs | |
| Railway Bridge No 17 | 6 furlongs | |
| Long Lane Bridge No 16 | 1 mile, 1½ furlongs | |
| Eyton Lower Lock | 1 mile, 4¾ furlongs | |
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Nearest water point
In the direction of Trench Lock Interchange
Nearest rubbish disposal
In the direction of Trench Lock Interchange
Nearest chemical toilet disposal
In the direction of Trench Lock Interchange
Nearest place to turn
In the direction of Trench Lock Interchange
In the direction of Shrewsbury Canal Terminal Warehouse
Nearest boatyard pump-out
In the direction of Trench Lock Interchange
No information
CanalPlan has no information on any of the following facilities within range:self-operated pump-out
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![Telford's iron aqueduct 2 - Longdon on Tern, Shropshire. One of Telford's many works and a precursor of the Pontcysyllte Aqueduct [[SJ 2742]]. Here amongst Shropshire fields stands the Longdon on Tern Aqueduct. It was designed and built by Thomas Telford in 1795 - 6 as a replacement for a stone structure which was destroyed in floods in 1795. It was Grade I listed by English Heritage, now Historic England, on 30th March 1971. A view of the other side of the Aqueduct, from the eastern end. Time photo taken not available. by Martin Richard Phelan – 1992](https://s0.geograph.org.uk/geophotos/06/74/90/6749032_948148f4_120x120.jpg)
![Telford's iron aqueduct 6 - Longdon on Tern, Shropshire. One of Telford's many works and a precursor of the Pontcysyllte Aqueduct [[SJ 2742]]. Here amongst Shropshire fields stands the Longdon on Tern Aqueduct. It was designed and built by Thomas Telford in 1795 - 6 as a replacement for a stone structure which was destroyed in floods in 1795. It was Grade I listed by English Heritage, now Historic England, on 30th March 1971. A view of the Aqueduct, from the eastern end. Time photo taken not available. by Martin Richard Phelan – 1992](https://s2.geograph.org.uk/geophotos/06/74/90/6749094_b873add2_120x120.jpg)
![Telford's iron aqueduct 3 - Longdon on Tern, Shropshire. One of Telford's many works and a precursor of the Pontcysyllte Aqueduct [[SJ 2742]]. Here amongst Shropshire fields on the north side of the village stands the Longdon on Tern Aqueduct. It was designed and built by Thomas Telford in 1795 - 6 as a replacement for a stone structure which was destroyed in floods in 1795. It was Grade I listed by English Heritage, now Historic England, on 30th March 1971. View westwards towards the opposite end. Time photo taken not available. by Martin Richard Phelan – 1992](https://s0.geograph.org.uk/geophotos/06/74/90/6749068_04dd6a2b_120x120.jpg)
![Telford's iron aqueduct 7 - Longdon on Tern, Shropshire. One of Telford's many works and a precursor of the Pontcysyllte Aqueduct [[SJ 2742]]. Here amongst Shropshire fields stands the Longdon on Tern Aqueduct. It was designed and built by Thomas Telford in 1795 - 6 as a replacement for a stone structure which was destroyed in floods in 1795. It was Grade I listed by English Heritage, now Historic England, on 30th March 1971. A view of the other side of the Aqueduct, from the eastern end. Time photo taken not available. by Martin Richard Phelan – 1992](https://s0.geograph.org.uk/geophotos/06/74/91/6749120_e63746b1_120x120.jpg)
![Telford's iron aqueduct 5 - Longdon on Tern, Shropshire. One of Telford's many works and a precursor of the Pontcysyllte Aqueduct [[SJ 2742]]. Here amongst Shropshire fields stands the Longdon on Tern Aqueduct. It was designed and built by Thomas Telford in 1795 - 6 as a replacement for a stone structure which was destroyed in floods in 1795. It was Grade I listed by English Heritage, now Historic England, on 30th March 1971. A view of the other end of the Aqueduct, at the eastern end. Time photo taken not available. by Martin Richard Phelan – 1992](https://s0.geograph.org.uk/geophotos/06/74/90/6749088_6d135611_120x120.jpg)

![Aqueduct, Longdon on Tern (2). Looking at the brick abutment at the east end and the cast-iron trough beyond.Apparently the oldest surviving cast-iron aqueduct in the world. As can be seen, however, the structure is a slightly jarring combination of iron and brick. Josiah Clowes started building a standard brick crossing of the River Tern for the Shrewsbury Canal in 1794, but after being damaged by floods in 1795, the job was completed by Thomas Telford the following year. Grade I listed.A wider view here: [[[2445259]]].It can be viewed via a permissive footpath. by Stephen Richards – July 2010](https://s1.geograph.org.uk/geophotos/02/44/52/2445273_1f2e98f9_120x120.jpg)
![Aqueduct, Longdon on Tern (1). Apparently the oldest surviving cast-iron aqueduct in the world. As can be seen, however, the structure is a slightly jarring combination of iron and brick. Josiah Clowes started building a standard brick crossing of the River Tern for the Shrewsbury Canal in 1794, but after being damaged by floods in 1795, the job was completed by Thomas Telford the following year. Grade I listed.A view looking along the top here: [[[2445273]]].It can be viewed via a permissive footpath. by Stephen Richards – July 2010](https://s3.geograph.org.uk/geophotos/02/44/52/2445259_101fe54d_120x120.jpg)

![Cast-iron plated boat channel of the aqueduct. The whole construction of the aqueduct was Grade I listed https://www.britishlistedbuildings.co.uk/101037006-shrewsbury-canal-longdon-aqueduct-aqueduct-on-the-shrewsbury-canalshrewsbury-canal-the-aqueduct-of-the-shrewsbury-canal-rodington in 1971, and built in 1796 as a replacement for a previous bridge over the river which has been lost to floods the year before. It's thought to be a test model of the techniques used for the construction of the magnificent [[4376313]] - there are distinct similarities in the bolting together of the plates. by Richard Law – 23 March 2018](https://s3.geograph.org.uk/geophotos/05/71/91/5719175_3ab02327_120x120.jpg)
![Telford's iron aqueduct 1 - Longdon on Tern, Shropshire. One of Telford's many works and a precursor of the Pontcysyllte Aqueduct [[SJ 2742]]. Here amongst Shropshire fields stands the Longdon on Tern Aqueduct. It was designed and built by Thomas Telford in 1795 - 6 as a replacement for a stone structure which was destroyed in floods in 1795. It was Grade I listed by English Heritage, now Historic England, on 30th March 1971. View from the eastern end. Time photo taken not available. by Martin Richard Phelan – 1992](https://s2.geograph.org.uk/geophotos/06/74/90/6749030_d0ef51bf_120x120.jpg)

![Telford's iron aqueduct 8 - Longdon on Tern, Shropshire. One of Telford's many works and a precursor of the Pontcysyllte Aqueduct [[SJ 2742]]. Here amongst Shropshire fields stands the Longdon on Tern Aqueduct. It was designed and built by Thomas Telford in 1795 - 6 as a replacement for a stone structure which was destroyed in floods in 1795. It was Grade I listed by English Heritage, now Historic England, on 30th March 1971. A view to the north from above the River Tern. The building of the Aqueduct was to take the Shropshire Union Canal over the River Tern. Time photo taken not available. by Martin Richard Phelan – 1992](https://s3.geograph.org.uk/geophotos/06/74/91/6749127_d5c5be32_120x120.jpg)
![Telford's iron aqueduct 9 - Longdon on Tern, Shropshire. One of Telford's many works and a precursor of the Pontcysyllte Aqueduct [[SJ 2742]]. Here amongst Shropshire fields stands the Longdon on Tern Aqueduct. It was designed and built by Thomas Telford in 1795 - 6 as a replacement for a stone structure which was destroyed in floods in 1795. It was Grade I listed by English Heritage, now Historic England, on 30th March 1971. A view from the Aqueduct, looking south over the River Tern. Time photo taken not available. by Martin Richard Phelan – 1992](https://s3.geograph.org.uk/geophotos/06/74/91/6749139_bfc2d72d_120x120.jpg)




![Telford's iron aqueduct 10 - Longdon on Tern, Shropshire. One of Telford's many works and a precursor of the Pontcysyllte Aqueduct [[SJ 2742]]. Here amongst Shropshire fields stands the Longdon on Tern Aqueduct. It was designed and built by Thomas Telford in 1795 - 6 as a replacement for a stone structure which was destroyed in floods in 1795. It was Grade I listed by English Heritage, now Historic England, on 30th March 1971. A view of the western end of the Aqueduct. Time photo taken not available. by Martin Richard Phelan – 1992](https://s2.geograph.org.uk/geophotos/06/74/91/6749146_6b437f45_120x120.jpg)
![Telford's iron aqueduct 4 - Longdon on Tern, Shropshire. One of Telford's many works and a precursor of the Pontcysyllte Aqueduct [[SJ 2742]]. Here amongst Shropshire fields stands the Longdon on Tern Aqueduct. It was designed and built by Thomas Telford in 1795 - 6 as a replacement for a stone structure which was destroyed in floods in 1795. It was Grade I listed by English Heritage, now Historic England, on 30th March 1971. A view of the other side of the Aqueduct, from the eastern end. Time photo taken not available. by Martin Richard Phelan – 1992](https://s2.geograph.org.uk/geophotos/06/74/90/6749074_3b272aaa_120x120.jpg)