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Caledonian Canal
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Caledonian Canal
The Caledonian Canal connects the Scottish east coast at Inverness with the west coast at Corpach near Fort William in Scotland. The canal was constructed in the early nineteenth century by Scottish engineer Thomas Telford.
The canal runs some 60 miles (100 kilometres) from northeast to southwest and reaches 106 feet (32 metres) above sea level. Only one third of the entire length is man-made, the rest being formed by Loch Dochfour, Loch Ness, Loch Oich, and Loch Lochy. These lochs are located in the Great Glen, on a geological fault in the Earth's crust. There are 29 locks (including eight at Neptune's Staircase, Banavie), four aqueducts and 10 bridges in the course of the canal.
The canal starts at its north-eastern end at Clachnaharry Sea Lock, built at the end of a man-made peninsula to ensure that boats could always reach the deep water of the Beauly Firth. Because the peninsula is built with mud foundations, it has required regular maintenance ever since. Next to the lock is the former lock-keeper's house, a two-storey building with a single-storey bothy at its western end and an enclosed garden. At an unknown date, the house was divided into two, and in 2005 the eastern half became offices for Scottish Canals. The building is a category C listed structure. At the opposite end of the peninsula to the sea lock, a swing bridge carries the Far North railway line across the canal. The first bridge at the site was designed by Joseph Mitchell for the Inverness and Ross-shire Railway, and was constructed of wrought iron in 1862. This was replaced by a similar structure in 1909, made of steel, which is 123 feet (37.5 m) long. The bridge, together with the adjacent signal box, designed by Mackenzie and Holland for the Highland Railway in 1890, is a category B listed structure.
Clachnaharry lock is next to the swing bridge, and is bordered by a smiddy and workshops, dating from the canal's construction in 1810, and extended in 1840–50. The smiddy still contains two hearths for forging metal. Muirtown Basin provides moorings at the eastern end of the canal, which takes a right-angled turn at the far end to pass under a swing bridge carrying the A862 road to reach the flight of four Muirtown Locks. From the top of the flight, the canal continues southwards to Tomnahurich swing bridge, which carries the A82 road over the canal. The original timber bridge was replaced by a steel structure in 1938, designed by Crouch and Hogg, which included a control box, as levels of traffic on the road and canal were increasing. Nearby is the former bridge keeper's cottage, built in the 1820s. It was no longer needed to house a bridge keeper after 1965, and after being empty for some years, was converted into self-catering accommodation. A short distance to the south a second swing bridge was opened in June 2021, as part of the Inverness West Link project. A new control building was built between the two bridges, so that both could be controlled from a single location. The concept behind the second bridge was that traffic could be diverted to use one of the bridges while the other was open for canal traffic.
The canal from Muirtown Locks to Dochgarroch Lock is a scheduled monument, as is Dochgarroch Lock, which was designed to protect the canal from flooding caused by fluctuating levels in the River Ness, which flows over a weir to the south of the lock. A two-storey lock keeper's cottage and barn dating from the 1850s overlooks the lock. The final section of canal to Loch Dochfour is also scheduled, and the designated area includes the weir for the River Ness, and the west bank of Loch Dochfour as far as Loch Ness. At its southern end is Bona Lighthouse, built as a house by Thomas Telford in 1815, and altered around 1848 to act as a lighthouse. The building is octagonal, with two storeys, and is a rare example of an inland light. There was once a ferry across the Bona channel at this point. In 1844, the channel was made deeper and wider when barges pulled by horses were replaced by steam tugs, and there is evidence that the building once included four stables. The canal section from Clachnaharry Sea Lock to Bona is 9.7 miles (15.6 km) long, and from there it is over 20 miles (32 km) along Loch Ness to the next canal section at Fort Augustus.
At the foot of Loch Ness, the Caledonian Canal leaves the west bank of the loch, with the River Oich to the north and the River Tarff to the south. The A82 road crosses the canal on a swing bridge, at the foot of the five locks that rise through the centre of the village of Fort Augustus. In 1975 only the locks were included in the scheduled monument designation, but that was subsequently extended to include all of the canal between them and Loch Ness, including the lighthouse at the entrance to this section of canal. At the top of the locks, a road beside the canal is spanned by a railway bridge, which was constructed to carry an intended line from Fort Augustus to Inverness. The bridge was in use from 1903 to 1906, when the railway project was abandoned. As well as the bridge, some piers built to carry the line over the River Oich can also be seen, although these are in a poor state of repair. The canal to Kytra Lock and the lock itself are both scheduled monuments. The canal continues to Cullochy Lock, where to the north of the structure there is a single storey lock keeper's cottage on the west bank which dates from the building of the canal, and a pair of two-storey houses for the lock keepers, dating from around 1830, on the east bank. On the east side of the lock is a single-storey storehouse dating from 1815 to 1820, which has three bays and internally is divided into a store and an office for the lock keeper.
The final part of the canal on this section runs from the lock to Loch Oich, and includes the abutments of a small swing bridge which formerly provided an accommodation crossing over the canal. The more modern Aberchalder swing bridge carries the A82 over the canal. A single-storey three bay cottage designed by Telford once provided housing for the bridge keeper. Nearby is the old bridge that carried the road over the River Oich, which was probably designed by James Dredge in the 1850s. It is a chain suspension bridge, and a long dry stone causeway provides access from the east. The A82 crosses the river on a three-arched concrete bridge designed by Mears and Carus-Wilson and constructed in 1932. Loch Oich is the summit of the canal, at 106 feet (32.3 m) above sea level, and despite its relatively small size compared to Loch Ness and Loch Lochy, it provides most of the 41.2 million imperial gallons (187 Ml) of water that is required each day to keep the canal operating.
The short section of canal between Loch Oich and Loch Lochy is crossed by a plate girder swing bridge carrying the A82 road at its northern end, and ends at a pair of locks at its southern end. Two jetties project out into Loch Lochy, and much of the structure is built on reclaimed land. A single-storey store with basement stands to the east of the locks, which was probably used to store materials and to provide stabling for horses while the canal was being constructed. On the west bank is Glenjade Cottage, dating from 1840 to 1860, which was once a pair of cottages but was converted into a single dwelling in the late 20th century. Ivy Cottage was also built for lock keepers, but was completed for the opening of the canal, and so is older than Glenjade cottages.
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Caledonian Canal
The Caledonian Canal connects the Scottish east coast at Inverness with the west coast at Corpach near Fort William in Scotland. The canal was constructed in the early nineteenth century by Scottish engineer Thomas Telford.
The canal runs some 60 miles (100 kilometres) from northeast to southwest and reaches 106 feet (32 metres) above sea level. Only one third of the entire length is man-made, the rest being formed by Loch Dochfour, Loch Ness, Loch Oich, and Loch Lochy. These lochs are located in the Great Glen, on a geological fault in the Earth's crust. There are 29 locks (including eight at Neptune's Staircase, Banavie), four aqueducts and 10 bridges in the course of the canal.
The canal starts at its north-eastern end at Clachnaharry Sea Lock, built at the end of a man-made peninsula to ensure that boats could always reach the deep water of the Beauly Firth. Because the peninsula is built with mud foundations, it has required regular maintenance ever since. Next to the lock is the former lock-keeper's house, a two-storey building with a single-storey bothy at its western end and an enclosed garden. At an unknown date, the house was divided into two, and in 2005 the eastern half became offices for Scottish Canals. The building is a category C listed structure. At the opposite end of the peninsula to the sea lock, a swing bridge carries the Far North railway line across the canal. The first bridge at the site was designed by Joseph Mitchell for the Inverness and Ross-shire Railway, and was constructed of wrought iron in 1862. This was replaced by a similar structure in 1909, made of steel, which is 123 feet (37.5 m) long. The bridge, together with the adjacent signal box, designed by Mackenzie and Holland for the Highland Railway in 1890, is a category B listed structure.
Clachnaharry lock is next to the swing bridge, and is bordered by a smiddy and workshops, dating from the canal's construction in 1810, and extended in 1840–50. The smiddy still contains two hearths for forging metal. Muirtown Basin provides moorings at the eastern end of the canal, which takes a right-angled turn at the far end to pass under a swing bridge carrying the A862 road to reach the flight of four Muirtown Locks. From the top of the flight, the canal continues southwards to Tomnahurich swing bridge, which carries the A82 road over the canal. The original timber bridge was replaced by a steel structure in 1938, designed by Crouch and Hogg, which included a control box, as levels of traffic on the road and canal were increasing. Nearby is the former bridge keeper's cottage, built in the 1820s. It was no longer needed to house a bridge keeper after 1965, and after being empty for some years, was converted into self-catering accommodation. A short distance to the south a second swing bridge was opened in June 2021, as part of the Inverness West Link project. A new control building was built between the two bridges, so that both could be controlled from a single location. The concept behind the second bridge was that traffic could be diverted to use one of the bridges while the other was open for canal traffic.
The canal from Muirtown Locks to Dochgarroch Lock is a scheduled monument, as is Dochgarroch Lock, which was designed to protect the canal from flooding caused by fluctuating levels in the River Ness, which flows over a weir to the south of the lock. A two-storey lock keeper's cottage and barn dating from the 1850s overlooks the lock. The final section of canal to Loch Dochfour is also scheduled, and the designated area includes the weir for the River Ness, and the west bank of Loch Dochfour as far as Loch Ness. At its southern end is Bona Lighthouse, built as a house by Thomas Telford in 1815, and altered around 1848 to act as a lighthouse. The building is octagonal, with two storeys, and is a rare example of an inland light. There was once a ferry across the Bona channel at this point. In 1844, the channel was made deeper and wider when barges pulled by horses were replaced by steam tugs, and there is evidence that the building once included four stables. The canal section from Clachnaharry Sea Lock to Bona is 9.7 miles (15.6 km) long, and from there it is over 20 miles (32 km) along Loch Ness to the next canal section at Fort Augustus.
At the foot of Loch Ness, the Caledonian Canal leaves the west bank of the loch, with the River Oich to the north and the River Tarff to the south. The A82 road crosses the canal on a swing bridge, at the foot of the five locks that rise through the centre of the village of Fort Augustus. In 1975 only the locks were included in the scheduled monument designation, but that was subsequently extended to include all of the canal between them and Loch Ness, including the lighthouse at the entrance to this section of canal. At the top of the locks, a road beside the canal is spanned by a railway bridge, which was constructed to carry an intended line from Fort Augustus to Inverness. The bridge was in use from 1903 to 1906, when the railway project was abandoned. As well as the bridge, some piers built to carry the line over the River Oich can also be seen, although these are in a poor state of repair. The canal to Kytra Lock and the lock itself are both scheduled monuments. The canal continues to Cullochy Lock, where to the north of the structure there is a single storey lock keeper's cottage on the west bank which dates from the building of the canal, and a pair of two-storey houses for the lock keepers, dating from around 1830, on the east bank. On the east side of the lock is a single-storey storehouse dating from 1815 to 1820, which has three bays and internally is divided into a store and an office for the lock keeper.
The final part of the canal on this section runs from the lock to Loch Oich, and includes the abutments of a small swing bridge which formerly provided an accommodation crossing over the canal. The more modern Aberchalder swing bridge carries the A82 over the canal. A single-storey three bay cottage designed by Telford once provided housing for the bridge keeper. Nearby is the old bridge that carried the road over the River Oich, which was probably designed by James Dredge in the 1850s. It is a chain suspension bridge, and a long dry stone causeway provides access from the east. The A82 crosses the river on a three-arched concrete bridge designed by Mears and Carus-Wilson and constructed in 1932. Loch Oich is the summit of the canal, at 106 feet (32.3 m) above sea level, and despite its relatively small size compared to Loch Ness and Loch Lochy, it provides most of the 41.2 million imperial gallons (187 Ml) of water that is required each day to keep the canal operating.
The short section of canal between Loch Oich and Loch Lochy is crossed by a plate girder swing bridge carrying the A82 road at its northern end, and ends at a pair of locks at its southern end. Two jetties project out into Loch Lochy, and much of the structure is built on reclaimed land. A single-storey store with basement stands to the east of the locks, which was probably used to store materials and to provide stabling for horses while the canal was being constructed. On the west bank is Glenjade Cottage, dating from 1840 to 1860, which was once a pair of cottages but was converted into a single dwelling in the late 20th century. Ivy Cottage was also built for lock keepers, but was completed for the opening of the canal, and so is older than Glenjade cottages.
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