Pennine Waterways News

Monday, 10 June 2019

Gate failure could close Rochdale Canal for weeks

A gate failure at Lock 66 on the Rochdale Canal in Failsworth may result in the lock being closed for several weeks. The incident, at Tannersfield Highest Lock, means that the whole flight of locks between New Islington and Failsworth is now shut.
The snapped mitre post at Lock 66.

The mitre post has snapped just above the water line. Initially CRT thought this was caused by boat impact but, as the lock was apparently full at the time, it is possible that the 21-year-old gate may have started to rot and weaken, with the pressure of water causing it to fail at a point where boats may have struck it in the past. It is likely that new gates will have to be made, which may take several weeks.
Dislodged and cracked anchor stone.

Of more concern is that the incident also dislodged and broke the anchor stone to which the gate was attached. It has shifted about an inch inwards toward the lock and cracks can be seen in several places. It looks likely that a new anchor stone will need to be crafted, as the existing stone may not have the structural strength to hold the gate safely in place.
Dislodged and fractured anchor stone.

Reports say that two boats had entered the full lock, the top gates closed and the crew were preparing to empty the lock when the nearside tail gate twisted, resulting in a sudden loss of water, with the boats dropping several feet. The gate has reportedly been twisting for some time, with the mitre posts not always lining up correctly. The gate originally had a wooden A-frame structure similar to the one in the photo below, but this was not reinstated when the locks were restored. The purpose of the frame was to stop gates twisting and to reduce the potential of the weight of water forcing the gates outward. (The slot in the anchor stone in the photo above was where the A-frame was positioned.)
Wooden A-frame supporting gates at Lock 8 in Hebden Bridge. Lock 66 originally had a similar frame.

An incident of a similar kind took place in 2003 at Lock 65, where a tail gate failed with two boats in the lock. In the same year tail gates also failed at Locks 25 and 30 near Walsden. The photo below, courtesy of Su and Mike Poole, shows the gate at Lock 30 after its failure.
Failed tail gate at Lock 30 in 2003. Photo: Su and Mike Poole.

The present closure of Lock 66 will inconvenience anyone planning to navigate the length of the Rochdale Canal. It is a particular problem to a number of historic boats which were returning from a rally in Hebden Bridge, and which are too long to leave the canal via the Calder and Hebble Navigation, with its shorter locks.

Wednesday, 29 May 2019

Marple Locks Re-opened

After being closed to navigation for 20 months (apart from a brief period last summer), Marple Locks on the Peak Forest Canal are once again open to navigation.
A CRT work boat tests Lock 11 after its re-building. Photo: CRT

Problems began in September 2017 when emergency reconstruction was needed at Lock 15. The lock flight was re-opened in May 2018 but, almost immediately, it became apparent that the side of Lock 11 was moving inwards. Temporary jacking wasn't successful and the operation of the lock was restricted to limited hours under CRT supervision. Problems persisted, however, and CRT had to take the decision to rebuild Lock 11.
The area Lock 11 has been landscaped after the work was completed. Photo: CRT

As a Listed structure, the work had to be carefully planned and agreed with Heritage England. The work should have been completed in March but ground instability, design changes and delays in drilling concrete piles have contributed to the work over-running.

Not a bulge in sight now at the re-built Lock 11 at Marple. Photo: CRT

A CRT work boat was used as the guinea pig to test that the lock worked correctly and the first boaters passed through the lock over the Bank Holiday weekend. This means that boaters are once again able to complete the Cheshire Ring. CRT's Tracey Jackson said that they are expecting a busy summer.
(Photos courtesy of Canal and River Trust)

Wednesday, 10 April 2019

Bosley Locks Closed

Bosley Locks have had to be closed to navigation after a void was discovered alongside Lock 3.

This was discovered in the course of operating the lock. There is a risk of the ground alongside the lock collapsing so the Canal and River Trust have closed the lock for investigations. They are looking at ways of allowing passage through the lock without endangering crews.

An update will be issued tomorrow.

With Marple Locks not due to re-open until 24th May, this means that the summit level of the Macclesfield and Peak Forest Canals is temporarily cut off.

Update 11th April:
CRT has issued the following statement -
"Our Teams have managed to erect a temporary platform which has been built above the void to enable the lock to still be in use.
"The flight is now open for navigation."

Update 16th April:
The flight will be closed on Wednesday 17th April between 8.00 am and 5.00 pm to allow repairs to be carried out on Lock 3.

Lock 3, Bosley flight, Macclesfield Canal

Saturday, 2 March 2019

Burnley Reopening Delayed

The closure of the Leeds and Liverpool Canal at Finsley Gate in Burnley is to be extended until May.

The Canal and River Trust has announced that the canal will not re-open in Burnley until Wednesday 8th May.

The Trust says that, once the canal was dewatered, it was discovered the amount of silt along the affected area was far greater than expected. The silt was tested and found to be contaminated, which means special measures have to be taken to remove it and dispose of it safely, causing significant delays to the project.

It was also found that the retaining wall was in a much worse condition than originally thought. This, too, has resulted in additional works.

CRT says that their contractors are doing everything they can to complete this project as soon as possible but will not be in a position to re-open the navigation until 8th May 2019. The Trust sincerely apologises for the inconvenience this may cause.

The stoppage at Finsley Gate was to enable canal relining works, work to the towpath retaining wall and offside soft bank protection.

Finsley Gate on the Leeds and Liverpool Canal at Burnley.

Wednesday, 6 February 2019

Marple Locks Reopening Delayed

Another setback has been announced for boaters wishing to use the Peak Forest Canal.
Trouble-hit Marple Locks are now to remain closed until the end of May.

The Canal and River Trust has revealed that rebuilding work at Lock 11 in Marple is a few weeks behind schedule. It is now planned to re-open the canal to boats at the end of Friday 24th May 2019.

It had originally been planned to re-open the locks in mid-March,. Engineers say they encountered delays in the piling phase of the works, with ground drilling and the installation of reinforced concrete piles behind the existing lock walls proving slower than expected. Some design changes were also needed due to site constraints. The piling is now complete and the ground stable so that the failed lock walls can now be carefully dismantled.

The re-building of the lock walls back to the correct alignment is complex and time consuming, as construction has to comply with heritage requirements, with Lock 11 being a Grade II Listed structure.

Lock 11 has been closed since July 2018 because the sides were moving slowly inward. It had been open on a restricted basis for only a few weeks after the lock flight had been closed from September 2017 because of serious subsidence at Lock 15.

These extended stoppages have affected boaters intending to navigate the Cheshire Ring.