We’re pleased to see spring has made a brief appearance, bringing excitement for the warmer boating months ahead. It is also a sign that our five-month-long winter engineering programme is nearing completion.
This annual engineering effort is carried out during the darkest months of the year as that’s when there are fewest boats navigating.
While projects have included repairs to ageing assets such as bridges, tunnels, embankments, sluices, culverts and canal walls, the bulk has been replacing over 100 lock gates. Lock gates have a life span of around 25 years, so this winter, our new hand-crafted gates are replacing ones that typically dating back to the early days of the millennium.
As you’d imagine, removing and replacing more than 100 lock gates is a major feat of engineering. Each lock gate is individually designed and hand-built at one of our specialist workshops, either at Stanley Ferry in Yorkshire or Bradley in the Midlands. Interestingly, the workshops have already started work on making next winter’s replacements.
Some of the projects undertaken across the network over the past few months include:
Lock gate replacement at Sykehouse Lock, used primarily by freight, on the New Junction Canal, part of the Sheffield and South Yorkshire Navigations.
Replacing lock gates on the Rochdale Canal in central Manchester; including one of six lock gate replacement projects made possible thanks to funds raised by players of People’s Postcode Lottery.
Replacing lock gates on the Stoke Bruerne Lock Flight on the Grand Union Canal in Northamptonshire.
Replacing lock gates at Hamstead Lock on the Kennet & Avon Canal near Newbury in Berkshire.
Boats in the locks at Stoke Bruerne
As mentioned, we schedule this work for winter, so we disrupt as few boaters as possible. It does, however, mean that the teams are often managing extreme conditions and this year has been no different. We appreciate their considerable effort as they have faced weather-related challenges from storms, flooding and, in some areas, the wettest winter on record.
Malcolm Horne, chief infrastructure and programmes officer, told Boaters Update: “Winter is the time of year when the focus for our skilled specialists, including our in-house construction team, turns to delivering the larger maintenance and engineering projects that are essential to keeping our 250-year-old canal network open and alive.
“Canals are centuries-old working heritage and, with rising costs, climate pressures and more extreme weather events, the challenge of keeping them in good condition for navigation has never been greater.
“While millions of people boat on or visit the canals over the course of a season, perhaps they don’t always stop to think about what it takes to look after them – or what we would lose if they were gone. Our canals cannot take care of themselves – keeping the nation’s canals open and safe requires millions of pounds and a huge amount of physical work. And the reality is, we cannot keep them alive without the support of boaters, our volunteers, supporters, and the wider public.”
Interesting lock gate facts:
When 14 of the lock gates manufactured at Stanley Ferry were collected, their total weight equalled three London buses; side by side they would have measured nearly the length of an Olympic swimming pool and if stacked on top of each other would have been the height of Wakefield Cathedral.
The lock gates made for Bank Dole Lock on the Aire & Calder Navigation in Yorkshire weigh 4,300kg – equivalent to an adult Asian elephant.
Construction manager reports from the cut
Usually knee deep in silt while helping his team repair and restore vital parts of the navigation, construction manager Ian Grice scrubbed up and gave this update on recent work:
The impossible restoration
Perhaps the folks at the Huddersfield Canal Society were just stubborn. But, after forming in 1974, 30 years after the canal closed, they rolled up their sleeves to tackle ‘the impossible restoration’ of the Huddersfield Narrow Canal (HNC).
It’s been 25 years since their decades-long hard work finally came to fruition and here we reflect on the canal’s history and highlights (and we’ll get to why it was thought impossible).
The beginning but not quite the end
The HNC can trace its roots back to 1793 when it was first proposed. By this time, the HNC’s sister canal, the Huddersfield Broad (HBC) was already edging towards 20 years old. But with the promise of ample trade from the wool and cotton industries it was authorised by the Huddersfield to Ashton-under-Lyne Canal Act 1794.
Slow and erratic progress meant that it wasn’t until 1811 that it linked up with the HBC to form a trans-Pennine route. There was a problem though and the clue is in the names. The Huddersfield Narrow Canal was built for 70ft-long narrowboats, while the Huddersfield Broad Canal can take wider 57ft x 14ft craft, as used on the Calder & Hebble Navigation. Goods therefore had to be transhipped between the two at Huddersfield.
This was done at Aspley Basin, and although shorter narrowboats were built, its success as a trans-Pennine route was overshadowed by the Rochdale Canal which had wide locks throughout, no long tunnel like Standedge, and joined the Calder & Hebble Navigation at Sowerby Bridge.
As is common throughout canal history, the railway boom led to the canal becoming part of the Huddersfield and Manchester Railway and Canal Company. However, once again, its main rival, the Rochdale Canal, was much more profitable.
What many may have thought as the permanent end of the HNC came when adjacent railway tunnels were built which drastically reduced the HNC’s income. And so it was that the London Midland and Scottish Railway (Canals) Act 1944 saw almost all the canal abandoned.
The impossible bit
It’s not often that something built over 210 years ago retains a record but Standedge is still the highest canal tunnel, at more than 640 feet above sea level, in Britain.
If that wasn’t enough it’s also still the longest and deepest! While this three-title-holding tunnel is a marvel of Georgian engineering, it proved to be a bottleneck, having been constructed without a towpath.
Boats had to be 'legged' through (check out this great video explainer if you’re not familiar) eventually by professionally employed leggers who were allowed three and a half hours to complete a single run from end to end (three and a quarter miles). A company employee would chain the tunnel entrance behind a convoy of boats and walk over Boat Lane, accompanied by boat boys and girls leading the boat horses, to unchain the opposite end of the tunnel before the convoy arrived. This journey was made at least twice per day for over twenty years.
In 1948, a party of Inland Waterways Association pioneers – among them canal restoration heroes Tom Rolt and Robert Aickman – took the boat Ailsa Craig from end to end. Their documented journey was to prove the last through the Standedge Tunnel for more than 50 years.
After such a long time, there was no knowing what conditions would be found inside the tunnel. But, in testament to those original navvies, no game-ending catastrophes had happened while it sat dormant for half a century. That’s not to say that a mountain of work, pun intended, wasn’t needed to reopen it.
With safety the primary objective, the walls and roof were secured using metre-long rock bolts and steel mesh, along with extensive repointing of brick and stone. Another major task was the environmental cleanup – decades of silt – 10,000 tonnes and in some places, up to six feet deep — had to be sucked out through long hoses. A further 3,000 tonnes of fallen rock had to be cleared.
And it hasn’t stopped there. Just a couple of years ago we installed a new, state-of-the-art, communication system, involving 4.5km of heavy cabling, to further ensure that, when you come to cross this off your bucket list, you’ll be safe.
Last week, we carried out a detailed inspection, as we’ve been doing ever since the tunnel reopened in 2001. Take a look below to get a taster and tune in to the next edition for more footage.
So, why not head north this year and pay tribute to the original engineers and navvies as well as the tireless volunteers who achieved the impossible?
Maintenance, repair and restoration work this weekend
Whilst our major winter repair and restoration programme is nearing completion there are still be more closures than usual as we finish preparing the network for cruising. You can find out where we’ve started, and in cases finished, work with this link.
Of course, as we’re in the more volatile months of winter there’s still a higher chance of extreme weather impacting navigation.When this does happen, or we have to unexpectedly repair something, we get notices up on to our website as soon as we can – it’s always best to have a scan while you’re planning your cruise and also just before you set off. You can find out how to get stoppage notification alerts on your smartphone in this article.
Follow this link to see where navigations are shut this weekend.
If you have any questions about a specific closure, or spot an error in our system, please get in touch.
Consultation on mandatory smoke alarms on boats
Proposals to introduce new safety standards for mandatory smoke alarms on boats with accommodation space(s) are open for public consultation until 30 April. Please share this with your boating friends, club members or surrounding berth holders/moorers.
Please take a few minutes out to read about the navigation authority proposals and submit your views via the Boat Safety Scheme website (or other routes as detailed in the information on this link.)
Upcoming regional meetings for you
No matter where you are in the country there’s a good chance that you’ll be able to come along and hear our regional plans for the year ahead. Of course, we also give updates on maintenance, new initiatives and any other local factors that may influence things on the cut. We also welcome questions which, in some cases, can be submitted in advance so we can best prepare. See the full list of meetings.
Last Edited: 13 March 2026
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