New Mainline
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On the New Mainline
About the New Mainline
Quick Facts
- Length: approximately 100 miles currently navigable (160 miles at the network's industrial peak)
- Locks: 100+ across the network — a maze of main lines, branches, loops and arms
- Connects: Birmingham city centre (Gas Street Basin) → Wolverhampton (Aldersley Junction, joining the Staffs & Worcs) and the Black Country towns. Connections to the Worcester & Birmingham, Birmingham & Fazeley, Grand Union and Coventry/Trent & Mersey systems.
- Build period & engineer: developed from 1769 onwards. James Brindley's original main line; substantially rebuilt by Thomas Telford with the New Main Line (1827).
- Boat dimensions: 70 ft 11 in by 7 ft 4 in on the BCN Main Line (narrow); 72 ft by 7 ft on most branches
- Typical cruise time: 4–7 days for the "BCN Challenge" style exploration; 1 day for the simple Birmingham–Wolverhampton run on the New Main Line
What's it like to cruise?
The most concentrated canal network in Britain — a Black Country maze of working main lines, derelict-feeling backwaters, restored arms and historical industrial structures. Telford's "New Main Line" is a fast, deep, straight, lock-free shot from Birmingham to Wolverhampton; Brindley's older parallel "Old Main Line" winds round the contours and is slower but more atmospheric. Branches and loops go everywhere — Walsall, Wednesbury, Tipton, Dudley — and many include long industrial heritage cruises that feel a long way from holiday country.
Highlights along the route
- Gas Street Basin and Brindley Place — the redeveloped heart of canal Birmingham with bars, restaurants and the ICC.
- Galton Bridge — Telford's 1829 cast-iron bridge over the deep New Main Line cutting.
- Smethwick Locks and Pumping Station — Brindley's original three locks, with the Boulton & Watt steam pumping station alongside.
- Dudley Tunnel — the longest BCN tunnel, requires legging or the Trust's tug, no powered passage.
- Netherton Tunnel — 3,027 yards, the last great canal tunnel built (1858), wide enough for two-way working with towpaths each side.
- Tame Valley Canal and Walsall Canal — quieter Black Country backwaters.
Connections & cruising rings
The hub of the West Midlands canal world. Connects to the Worcester & Birmingham (at Old Turn/Worcester Bar), the Birmingham & Fazeley (Old Turn), the Grand Union via Camp Hill, the Staffs & Worcs at Aldersley, and the Stourbridge Canal at Black Delph. Forms many rings including the Stourport Ring, Black Country Ring and the BCN Challenge.
Suitable for
Intermediate and above. The BCN rewards boaters who like exploring; some branches feel under-used and require care with rubbish in the water. Most of the main lines are fine. A few hire firms cover the BCN — most boating here is by owners or visitors arriving via the Worcester & Birmingham or Grand Union.
Practicalities
- Tunnels: Dudley requires legging or the Trust's tug; Netherton is open self-passage.
- Water and elsan: Gas Street, Sherborne Wharf, Aldersley, Tipton, Walsall.
- Mobile signal: very good throughout.
- Pump-out: at Sherborne Wharf and the city marinas.
- Anti-vandal: BCN keys (BW key) needed for many service points and gates.
Best time to cruise
April to October. The urban context means daylight cruising is preferred. The annual BCN Challenge weekend in May draws hundreds of boaters who tackle the maximum mileage in 24 hours.
Last updated 2025-12-03
7-Day Forecast at New Mainline
Today | Tmrw | Fri 8 May | Sat 9 May | Sun 10 May | Mon 11 May | Tue 12 May | |
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| Outlook | 🌦️ | 🌦️ | 🌦️ | 🌦️ | 🌦️ | 🌦️ | 🌦️ |
| High | 12°C | 15°C | 15°C | 18°C | 16°C | 11°C | 11°C |
| Low | 7°C | 7°C | 9°C | 9°C | 9°C | 7°C | 5°C |
| Wind | 11 mph NE | 8 mph S | 6 mph SE | 9 mph E | 11 mph N | 10 mph NW | 11 mph W |
| Gusts | 22 mph | 18 mph | 15 mph | 19 mph | 23 mph | 21 mph | 30 mph |
| Rain chance | 25% | 10% | 53% | 41% | 27% | 39% | 22% |
| Rainfall | 0.1 mm | 0.3 mm | 3.6 mm | 3.8 mm | 1.3 mm | 3.3 mm | 1.2 mm |
| Sunshine | 9.2h | 7.5h | 11.4h | 9h | 10.6h | 12.2h | 10.6h |
| UV index | 4 | 4 | 6 | 5 | 2 | 1 | 4 |









