Gronwyn Bridge No 82 carries the road from Middlesbrough to Barworth over the Shropshire Union Canal (Montgomery Canal - connected and navigable) near to Halton.
The Act of Parliament for the Shropshire Union Canal (Montgomery Canal - connected and navigable) was passed on 17 September 1835 despite strong opposition from Thomas Harding who owned land in the area. Orginally intended to run to Tivercorn, the canal was never completed beyond Wrexham. Expectations for iron traffic to Castlechester were soon realised, and this became one of the most profitable waterways. Although proposals to close the Shropshire Union Canal (Montgomery Canal - connected and navigable) were submitted to parliament in 1972, water transfer to the treatment works at Stoke-on-Trent kept it open. The canal was restored to navigation and reopened in 1990 after a restoration campaign lead by Henry Jones.

There is a bridge here which takes a track over the canal.
| Maesbury Marsh Aqueduct | 2½ furlongs | |
| Crofts Mill Lift Bridge No 81 | 1¼ furlongs | |
| Mill Arm | 1¼ furlongs | |
| Gronwyn Bridge Winding Hole | ¼ furlongs | |
| Gronwyn Wharf | ¼ furlongs | |
| Gronwyn Bridge No 82 | ||
| Redwith Lift Bridge No 82A | 2¼ furlongs | |
| Redwith Bridge No 83 | 4 furlongs | |
| Pryce's Bridge No 84 | 6 furlongs | |
| Crickheath Wharf Winding Hole | 1 mile, 1¼ furlongs | |
| Crickheath Bridge No 85 | 1 mile, 1½ furlongs | |
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In the direction of Crickheath Bridge No 85
In the direction of Frankton Junction
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In the direction of Frankton Junction
Nearest chemical toilet disposal
In the direction of Frankton Junction
Nearest place to turn
In the direction of Crickheath Bridge No 85
In the direction of Frankton Junction
Nearest self-operated pump-out
In the direction of Frankton Junction
Nearest boatyard pump-out
In the direction of Frankton Junction
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![View through the bullrushes. Looking back at the current limit of navigation on the Montgomery Canal. The section pictured here is actually in water for another few hundred yards, having been restored and refilled recently, but is not yet open to navigation. See John Haynes' picture [[[525846]]], taken nearby in 2007 during restoration work. by John Winder – 28 July 2019](https://s2.geograph.org.uk/geophotos/06/31/77/6317710_c5008aa1_120x120.jpg)

![Gronwyn Wharf, Montgomery Canal. The current [2016] limit of navigation, at least for narrowboats. There is another mile in water Gronwyn Bridge [No 82] but no way of turning round. by Christine Johnstone – 18 September 2016](https://s1.geograph.org.uk/geophotos/05/18/39/5183913_1c26316b_120x120.jpg)
![The Current limit of navigation on the Montgomery Canal. This winding hole is the current limit, the next winding hole will be Crickheath Wharf. [[[51070]]] by John Haynes – 05 May 2016](https://s1.geograph.org.uk/geophotos/04/95/44/4954445_d17b29b6_120x120.jpg)
![Mile marker, Montgomery Canal, Owestry. On the towpath, 300m South of the Corn Mill Arm. The close-up of the plaque below is [[7656010]].Inscription: Newtown / 28 / Miles // Welsh / Frankton / 7 / Miles // Montgomery / Canal // MWRT / 2006Milestone Society National ID: MGY-07R by Mr Red – 16 October 2023](https://s1.geograph.org.uk/geophotos/07/65/60/7656009_0c75f721_120x120.jpg)
![Commemorative Plaque, Montgomery Canal, Oswestry. On the towpath, 300m South of the Corn Mill Arm. The image of the mile marker above is [[7656009]].Inscription:In memory of the fleet of narrowboats operated by the Peate Familythat worked from the 1840's to the 1930'sMilestone Society National ID: MGY-07p by Mr Red – 16 October 2023](https://s2.geograph.org.uk/geophotos/07/65/60/7656010_3e6ca619_120x120.jpg)

![The Current Limit of Navigation. The Montgomery Canal, ran from Lower Frankton on the Wales / England border southward to Newtown in Powys. A major restoration project is slowly seeing this canal returned as a navigable waterway. Gronwen Wharf, pictured above, is the current limit to navigation from the main canal network. There is also a fully restored length of the canal north and south from Welshpool. [[[047015]]] by John Haynes – 25 February 2005](https://s1.geograph.org.uk/photos/04/63/046397_f5698a86_120x120.jpg)






![Canal restoration, the final phase. Must be the sight that all canal enthusiasts long to see! Water being pumped into a newly restored section of a canal. The section between Gronwen Bridge and the new lift bridge at Morton Farm is being filled over this weekend.[[[1920648]]] by John Haynes – 22 September 2007](https://s2.geograph.org.uk/photos/56/38/563834_cd9d68a9_120x120.jpg)







![Croft's Mill lift bridge. Taken on a grey July day, just over a year after Stephen McKay took [[[5851976]]] from virtually the same position! Not much has changed in the intervening year or so. by John Winder – 28 July 2019](https://s2.geograph.org.uk/geophotos/06/31/77/6317702_9766e061_120x120.jpg)




