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footbridge decks


ONE of two 270t footbridge decks was last weekend strand jacked into position over a twin track section of the Bristol to Southampton railway line in Salisbury. Contractor Osborne slid the four 26m long precast concrete beams and insitu deck into position during an overnight rail possession. The deck was formed adjacent to its final position. Each beam weighs 50t and was slid along 60m of temporary steelwork tracks. Jacks supplied by specialist lifting firm VSL were used to lift and then suspend the deck from 60m span temporary steel beams.

The deck was then hauled along the beams before being lowered onto the abutments. A second slide will take place during a possession in the spring. The work is being done as part of a £3M Highways Agency project to improve safety on the A36 Skew Bridge in Salisbury.

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