11 December 2011
London Bridges: 19. Rolling Bridge, Paddington
I would guess few of my readers will be unfamiliar with this bridge, as it is one of the most remarkable and audacious footbridge designs from the last decade. As with the Helix Bridge, it's something of a white elephant, spanning a very small side-arm of the canal, which goes nowhere and has no real reason for continued use by boats. The bridge is useful in providing a direct route along the edge of the main canal basin, but it doesn't really need to open.
Most moving bridges operate on the principles of translation (lifting and retractable bridges) or rotation (bascule and swing bridges). Very few adopt the principle of transformation, indeed about the only other examples which come to mind are Schlaich Bergermann's folding bridge at Kiel and arching bridge at Duisburg.
It was designed by Thomas Heatherwick, with structural engineering by Packman Lucas and SKM Anthony Hunt. The steelwork was fabricated by Littlehampton Welding. It cost £330,000 in 2004, which seems a lot for a 12m long bridge, but was surely worth it.
Up close, the detailing is nicely done, although the bumpy profile of the top rail in the at-rest position looks a little odd. It's often a problem with "iconic" opening bridges that their sense of spectacle is lost when they are closed. With the Rolling Bridge, it still retains a sense of potential, like a muscle tensed and ready to flex.