Independent. Built from Canal & River Trust's own published notices, with no affiliation to or endorsement by the Trust.
The archive / Monmouthshire & Brecon Canal
Monmouthshire & Brecon Canal
7.5 closure-days per kilometre (95% range 6.8–8.3) — 425 days across 14 closures of this 56km canal.
Lengths from CRT's ArcGIS open data, published under the strictest reading of its licence. A notice is attributed to the whole named waterway, not to a point.
Something was shut here on 31% of this cruising season — 72 of its 231 days — across 7 separate closures.
That means a closure somewhere on the canal, not that the whole canal was impassable. Every closure below names the locks or bridges it sat between.
1 closure is still shut now, and 1 of those has no reopening date. Filter to it.
- Regions
- Wales and South West
- On record
- 21 closures
The season, closure by closure
Each row is one closure. A bar starts and ends where the closure did, and its length is how long it ran; dashed bars have not started yet.
Every closure on record
Showing all 14 closures on the Monmouthshire & Brecon Canal.
What these figures mean
- Population
- Which closures a figure counts. All closures is everything; Unplanned, in season drops CRT's scheduled winter programme and any day outside the 15 March to 31 October cruising season; CRT winter programme is that maintenance alone.
- Defensible duration
- The days between a closure's start and its reopening date, counted only where the dates allow it. A cancelled notice, or one whose reopening precedes its start, has no defensible duration and is in no total.
- Closure-days
- One day on which one closure was in force. Two closures on the same day are two closure-days; where the question is how long a canal was actually disrupted, overlapping notices are unioned into single intervals.
| Notice | Extent | Started | Days |
|---|---|---|---|
| Canal bed inspections, Glan Usk | Bridge 120, Baylis Bridge to Bridge 125, Dyfnant Bridge | 2026-01-05 | 67 |
| Canal bed inspections, Lower Llangynidr | Bridge 125, Dyfnant Bridge to Bridge 129, Panteague | 2026-01-05 | 67 |
| Canal bed inspections, Cross Oak, Nr Talybont-on-Usk | Bridge 146, Chilson Bridge to Bridge 152, Castle Bridge | 2026-01-05 | 67 |
| Bridge 62, High Bridge, Mamhilad | Bridge 62, High Bridge | 2025-11-03 | 46 |
| Canal bed inspections near Goytre | Bridge 75, Jenkin Rosser to Bridge.76 Lapstone | 2025-11-03 | 46 |
| Llanfoist Safety Gates (upstream and downstream), Embankment 8A, Llanfoist. | Tod's Bridge to Bridge 96, Govilon Turn | 2025-11-03 | 46 |
| Bridge 47 to Bridge 55 on the Monmouthshire & Brecon Canal. | Bridge 47, Solomon's Bridge to Bridge 55, Jockey Bridge | 2026-08-25 | 28 |
| Upstream of bridge 147 Cross oak | Bridge 147, Cross Oak | 2026-06-13 | 24 |
| Monmouthshire & Brecon Canal, downstream of Bridge 106 (Gilwern) | Bridge 106, Ffynnon-Yr-Eirin | 2025-08-28 | 18 |
| Bridge 55 M&B Canal | Bridge 47, Solomon's Bridge to Bridge 55, Jockey Bridge | 2026-08-09 | 15 |
| Between Bridge 118 to Bridge 119, Monmouthshire & Brecon Canal | Bridge 118, Workhouse Bridge to Bridge 119, Folly Bridge | 2026-06-02 | 1 |
| 300m U/S of Brynich Lock | Bridge 163, Cefn Brynich Bridge to Br.164 Brynich Bridge | 2026-08-29 | same day |
| Between bridges 95A & 96 | Llanfoist Stopgate D/S to Bridge 96, Govilon Turn | 2026-08-31 | same day |
| Below Bridge 79 | Bridge 78, Mill Turn to Llanover Bridge 79 | 2026-09-05 | same day |
Showing the 14 longest of 14. Every row links to the notice CRT published.
Coming up
Scheduled but not yet started, so in no figure above.
| Closure | From | Planned |
|---|---|---|
| Canal channel - Mamhilad between Bridge 57, Lower Wern and Bridge 65, Mortimer`s | 2 November 2026 | 46 days |
| Canal channel - Gilwern between Bridge 104, Auckland Bridge and 200m west of Bridge 109, Dan-Y-Parc | 2 November 2026 | 46 days |
| Weir 2A, Llanfrynach weir | 2 November 2026 | 46 days |
| Lock 69, Brynich Lock, Brynich, Brecon, Wales | 9 November 2026 | 18 days |
| Glanusk. Between bridges 119 and 125 | 4 January 2027 | 67 days |
| Lock 65, Coombes Lock | 11 January 2027 | 32 days |
| Lock 69, Brynich Lock | 11 January 2027 | 32 days |
Not counted
Cancelled notices and ones whose dates cannot be right are in no figure on this page. They are kept here because CRT published them.
| Notice | State | Started |
|---|---|---|
| Lock 66, Cwmcrawnon | Cancelled | 9 February 2026 |
| Canal channel - Mamhilad between Bridge 57, Lower Wern and Bridge 65, Mortimer`s | Published | 2 November 2026 |
| Canal channel - Gilwern between Bridge 104, Auckland Bridge and 200m west of Bridge 109, Dan-Y-Parc | Published | 2 November 2026 |
| Glanusk. Between bridges 119 and 125 | Published | 4 January 2027 |
| Lock 69, Brynich Lock, Brynich, Brecon, Wales | Published | 9 November 2026 |
| Weir 2A, Llanfrynach weir | Published | 2 November 2026 |
| Lock 65, Coombes Lock | Published | 11 January 2027 |
| Lock 69, Brynich Lock | Published | 11 January 2027 |