Selby Canal, Brayton Tunnel

Summary

Canal culvert completed by 1778, designed by William Jessop engineer, for the Aire and Calder Navigation Company.

Reasons for Designation

Brayton Tunnel, 1778 by William Jessop, is listed at Grade II for the following principal reasons:

Architectural interest:

* the tunnel culvert was completed for the Aire and Calder Navigation Company in 1778, during the 'Pioneer Phase' of the Canal Age;

* the canal structure pre-dates 1830 and survives in its original form, largely unaltered and retaining significant original fabric;

* it was built as an ingenious engineering solution to alleviate the threat of the Selby Canal being inundated and damaged by flood water;

* it is a very rare form of early canal structure.

Historic interest:

* the tunnel has a strong historic association with their designer William Jessop, who is recognised as being one of the most eminent canal engineers of the C18.

Group value:

* the culvert tunnel share a functional and spatial group value with three similar tunnels and several listed structures along the length of the canal.

History

Following the turning down of a submission to Parliament to improve the river navigation of the River Aire below Haddlesey in 1772, the Aire and Calder Navigation Company sought an alternative route to improve the flow of river traffic, and employed William Jessop to carry out the work. At the time of his commission, he was working under John Smeaton and surveyed the new canal route, linking the River Aire to the River Ouse from West Haddlesey to Selby. As his Oxford Dictionary of National Biography entry makes clear, Jessop was a resourceful but cautious engineer, with a pragmatic approach to problems producing affordable solutions, which resulted in him being considered the 'first engineer' of the Kingdom. The company then submitted the proposals for the Selby Canal to Parliament in 1774, and an Act of Parliament was granted to the company on 14 June. Construction work began early the following year with William Jessop acting in his his own right as the principal engineer, John Gott as resident engineer, and James and John Pinkerton being the main contractors. The six mile long canal was completed with relative ease and was opened three years later on 29 April 1778 costing £20,000. The low-lying and flat countryside enabled it to be built with a minimum of costly engineering, entailing the construction of only two locks, eight bridges, and the dock facilities at Selby. Nevertheless the fact that the area was prone to flooding did require Jessop to design five ingenious tunnel culverts beneath the canal to prevent it from being damaged or inundated by floodwater: these were sited at West Haddlesey, Paper House Farm, Lund, Brayton, and The Vivars, Selby; the latter was in-filled at an uncertain date. Although varying in detail, all of the tunnels consisted of a pair of roughly D-shaped collection ponds or sumps either side of the canal channel, linked by a culvert tunnel or culverts passing beneath the canal. The sumps were originally protected by two bar timber fences, but these have since been replaced by a mixture of modern tubular steel and timber fencing.

By 1800, Selby Canal was handling in the region of 369,780 tons of cargo per year; however its very success was also its undoing as the huge volume of traffic was causing delays and congestion at Selby. Consequently the Aire and Calder Company opened a new cut to Goole in 1826 which became the main destination for their traffic and caused the steady decline of the Selby Canal. Nevertheless, it was widened and deepened in 1828, further improvements were made in the 1830s, and again between 1885 and 1886, but none were sufficient for it to regain much of its past trade apart from that heading to York. The slow decline continued in the C20 but it gained an additional role during the Second World War when a Buffer Depot was established at Selby as an emergency food store with access to the canal system.

Post-war, the canal was nationalised in 1948 and was brought under the control of the British Transport Commission. A turning point was reached in 1962 when British Waterways marketed it as part of a through route to York with a consequent increase in pleasure boat traffic, which has steadily grown to over 2,000 boats using the canal each year. In July 2012 all British Waterways' assets including the Selby Canal were transferred to the Canal and River Trust.

Details

Canal culvert, 1778, designed by William Jessop engineer for the Aire and Calder Navigation Company.

MATERIALS: limestone and gritstone headwalls, wing walls, waterway channel walls, and a culvert, built on timber foundations. The upper surface of the north sump headwall is paved in stone setts.

PLAN: a pair of inverted horse-shoe plan walled sumps lined by headwalls with open backs to either side of a walled waterway channel, linked by a culvert beneath the canal bed. The waterway channel walls have a depressed U-plan; the northern wall has straight side lengths with a gently curved central section, and the southern wall is more angular and the central section is also straight.

DESCRIPTION: each sump headwall is capped by a course of gritstone blocks, into which recesses have been cut to receive timber railing posts that were retained by wrought-iron straps fixed in lead. Below the capstones are three courses of large ashlar limestone blocks laid on a band of five courses of blue engineering bricks, which runs the circumference of the structure. Below this level (the water-level) each side or wing wall of the sump is battered by stepped stone courses that terminate in large ashlar quoins either side of a slightly recessed vertical central panel, with a 1.75m high segmental stone arch culvert at its base. The culvert floor is laid in timber and it passes beneath the canal channel to the opposite sump. The upper surface of the north sump forms a 3.73m wide towpath paved with stone setts, while the upper surface of the south sump is grassed. The opposing parallel waterway channel walls form a 5.77m wide passage through which the canal passes. The open rear of the north sump feeds into a stream that runs parallel to the towpath, while that of the south sump is fed by a stream from the south-east that drains the land of Henwick Hall Farm.

Sources

Books and journals
Hadfield, C, The Canals of Yorkshire and North East England, (1972), 31-34, 37-39, 43, 123, 129, 131-132, 138-139, 141, 148-149
Hadfield, C, The Canals of Yorkshire and North East England, (1973), 314, 373, 383

Websites
Selby Canal, accessed 22 December 2020 from https://en.wikipedia.org/wiki/Selby_Canal
Canal and River Trust, accessed 22 December 2020 from https://en.wikipedia.org/wiki/Canal_%26_River_Trust
Jessop, William (1746-1814), civil engineer, R.Angus Buchanan, accessed 30 December 2020 from https://www.oxforddnb.com/search?q=Jessop+William&searchBtn=SearchisQuickSearch=true
Canal & River Trust Open Data, accessed 26 January 2021 from https://data-canalrivertrust.opendata.arcgis.com/datasets/ff8250a255224f75b30d74c05b6c5f13_0/data

Other
Canal and River Trust, CDM1.1 Outline Pre Construction Information (for culvert inpection), Brayton Tunnel

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