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1831 Spiral Roving Bridge on the Macclesfield Canal This stone bridge, number 77 and known as Lambert's Lane Bridge, stands on the Macclesfield Canal near Congleton in Cheshire, England. It was built in 1831 under the direction of engineer William Crosley and is listed as a Grade II building. Constructed from regularly coursed blocks of Keuper sandstone, it features a horseshoe shaped elliptical arch, inward sloping battered abutments, and cobbled pathways. The bridge's primary function relates to the canal transport system of the period, when boats were towed by horses. This type of structure, called a turnover or spiral bridge, was designed to allow the horse to move from one bank to the other when the towpath changed sides, without the need to unhitch the tow rope attached to the boat. The spiral ramp enabled the horse to turn continuously while remaining connected to the rope, reducing stops and maintaining efficient movement along the canal. These bridges form a distinctive feature of the Macclesfield Canal, which opened in the same year, and illustrate the practical engineering solutions developed to meet the demands of inland waterway transport in the nineteenth century.
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