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On I in 4 with a 60-ft. Girder W HEN three
Page 94
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60-ft.-long steel girders for the new Lynmouth bridge, Devon, were delivered from Scunthorpe recently, the last part of the journey involved negotiating the 1-in-4 ascent of Porlock Hill and the equally steep descent of Countisbury Hill. A Unipower four-wheel-drive tractor of Edward R. Jones, Ltd., Minehead, assisted the Leyland Octopus outfit of the Scunthorpe depot of British Road Services on these gradients.
The load was supported at the front on a swivelling bolster on the platform of the Octopus, and at the rear on a four-wheeled bogie. Overall length from the front of the prime mover to the rear of the overhang of the girders from the tiogie was 70 ft.
The degree of articulation allowed the outfit to turn the corners = on Porlock without great difficulty, and a sharp left 'bend in the village of Allerford between Minehead and Porlock.
Each girder weighed 5 tons, and to climb Porlock the Unipower tractor was connected by wire rope to the Leyland to give the necessary assistance. Coming down Countisbury, the Unipower followed the Leyland to provide braking effort. Even so the brakes of the prime mover overheated.