Grand Canal Lock No 28
Grand Canal Lock No 28 is one of many locks on the Grand Canal - Main Line and is one of the deepest locks on the waterway just past the junction with The River Yeo.
Early plans for the Grand Canal - Main Line between Middlesbrough and Kingston-upon-Hull were proposed by John Longbotham but languished until Thomas Dadford was appointed as engineer in 1835. The canal joined the sea near Rhondda. The two mile section between Boggin and Bradford was closed in 1905 after a breach at Nantwich. Restoration of Norwich Tunnel was funded by a donation from the Grand Canal - Main Line Society

This is a lock with a rise of 8 feet and 8 inches.
| Ballycowan Bridge | 2 miles, ¾ furlongs | |
| Grand Canal Lock No 29 | 2 miles, ¾ furlongs | |
| Shra Bridge | 7¼ furlongs | |
| Tullamore Railway Bridge | 1 furlong | |
| R443 Road Bridge | ¼ furlongs | |
| Grand Canal Lock No 28 | ||
| Cox's Bridge | 2 furlongs | |
| Grand Canal Lock No 27 | 2¼ furlongs | |
| Arden Road Bridge | 4½ furlongs | |
| Convent Road Footbridge | 5¼ furlongs | |
| Tullamore Harbour | 6 furlongs | |
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In the direction of Shannon - Grand Junction
In the direction of Liffey - Grand Junction
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![Castles of Leinster: Srah, Offaly (1). Situated on the Grand Canal Way near Tullamore, Srah was built in 1588 by the Elizabethan officer John Briscoe from Cumbria. It is notable for its numerous gunloops, and the bartizans with rooms opening off the fourth storey. There is also a particularly fine two-light angle loop, its mullion comprising a section of the SW corner by the west facing entrance. There is also another fine single angle loop that pierces the NE corner http://www.geograph.org.uk/photo/1952908. The exterior is complete to the parapet, on which is a machicolation directly over the entrance. The ruins of a C17 house adjoins the NW corner.[[1952880]] by Mike Searle – 24 June 2010](https://s0.geograph.org.uk/geophotos/01/95/28/1952872_4dad3d6b_120x120.jpg)
![Castles of Leinster: Srah, Offaly (2). A gaping hole now appears on this corner where there was once a bartizan, the room it contained now open to the elements.[[1952893]] by Mike Searle – 24 June 2010](https://s0.geograph.org.uk/geophotos/01/95/28/1952880_b391058c_120x120.jpg)
![Castles of Leinster: Srah, Offaly (3). One of several different styles of gunloop at Srah.[[1952899]] by Mike Searle – 24 June 2010](https://s1.geograph.org.uk/geophotos/01/95/28/1952893_0c6ee268_120x120.jpg)
![Castles of Leinster: Srah, Offaly (4). Another example of a style of gunloop used at Srah.[[1952908]] by Mike Searle – 24 June 2010](https://s3.geograph.org.uk/geophotos/01/95/28/1952899_c6008e0c_120x120.jpg)
![Castles of Leinster: Srah, Offaly (5). A particularly fine single angle loop that pierces the NE corner.[[1952915]] by Mike Searle – 24 June 2010](https://s0.geograph.org.uk/geophotos/01/95/29/1952908_f11189ba_120x120.jpg)
![Castles of Leinster: Srah, Offaly (6). A window with a pair of ogival-headed lights.[[1952872]] by Mike Searle – 24 June 2010](https://s3.geograph.org.uk/geophotos/01/95/29/1952915_da71e1b3_120x120.jpg)






