Worsley Navigable Levels

Overview

The Worsley Navigable Levels were an extraordinary system of underground canals, driven directly into Francis Egerton, 3rd Duke of Bridgewater's coal workings so that boats called starvationers could load coal at the coalface itself and float it straight out to the Bridgewater Canal.

History

Coal had been worked at Worsley from as early as 1376, and a first drainage sough was cut into the Duke of Bridgewater's estates there in 1729 under his predecessor, Scroop Egerton, the 1st Duke. Francis Egerton, the 3rd Duke, took control of the estate in 1757 at the age of 21 and, with his land agent John Gilbert, conceived the idea of extending the Bridgewater Canal underground directly into the coal workings, combining drainage and coal haulage in a single navigable level. The Bridgewater Canal Act passed in 1759 and construction, directed by the engineer James Brindley, was largely complete by 1764. The main level, 8 feet high with 4 feet of headroom and water clearance, first reached a workable seam -- the Worsley Four Foot mine -- 770 yards from its portal in 1761, and eventually extended some 4 miles underground; a further upper level, 1.75 miles long with a steep 1-in-4 gradient branch, was added in 1773. Between 1795 and 1797 an underground inclined plane 453 feet long was built to raise loaded boats 106.5 feet between levels using a counterbalanced system. Small boats known as 'starvationers' -- narrow, with prominent internal ribs, built to fit the tunnels as tightly as possible -- carried coal through the levels, in places propelled by 'legging', boatmen lying on their backs and walking their feet along the tunnel roof. By closure, the navigable levels totalled some 46 miles. Coal traffic through the levels ceased in 1887, though the system continued to be used for mine drainage, with boat inspections carried on until 1968.

Workings

An underground canal system, its main level 8 feet high, reaching the Worsley Four Foot seam 770 yards from the portal in 1761 and eventually extending some 4 miles, with a further 1.75-mile upper level added in 1773 and a 453-foot underground inclined plane (1795-97) raising boats 106.5 feet between levels; narrow boats called starvationers carried coal directly from the coalface, in places propelled by 'legging'.

Recorded claims

Individual factual claims, each attached to the source(s) that support it below. Where sources disagree, both are kept.

• The Bridgewater Canal Act passed in 1759, and construction under engineer James Brindley was largely complete by 1764; the main level first reached the Worsley Four Foot seam, 770 yards from the portal, in 1761, and an underground inclined plane built 1795-97 raised loaded boats 106.5 feet between levels using a counterbalanced system. ¹
• Small boats called 'starvationers', narrow and ribbed to fit the tunnels tightly, carried coal directly from the coalface through the levels, in places propelled by boatmen 'legging' -- lying on their backs and walking their feet along the tunnel roof; by closure the navigable levels totalled some 46 miles. ¹
• Coal traffic through the levels ceased in 1887, though the system continued in use for mine drainage, with regular boat inspections carried on until 1968. ²

Photographs & further reading

Images

Sources

1. (secondary) Worsley Navigable Levels — Wikipedia
2. (secondary) Bridgewater Collieries — Wikipedia

Record created: 2 September 2026 · Last researched: 2 September 2026