The new Multi Million Pound Twin Sails Lifting Bridge in Poole Dorset!
Construction of the bridge started in October 2010.
The new bridge is intended to operate alongside the existing Poole Bridge with one of the bridges always open for vehicular traffic (except during closures for maintenance or in a marine emergency), the intention is that variable-message signs will direct traffic to the open bridge.2 The bridge comprises a 10.8-metre (35 ft) wide carriageway with two vehicular lanes and two separate cycle lanes.3 Additionally two 2.5-metre (8 ft) wide footpaths are provided which cantilever from the bridge. The bridge is constructed in five spans, with a total length of roughly 139 metres (456 ft). The approaches comprise two 27-metre (89 ft) spans, the centre lifting span consists of two triangular leaves that span 23.4 metres (77 ft) between the main bearings to provide a clear channel of 19 metres (62 ft) when open.
To permit the passage of boats through the navigation channel, the lift spans were planned to pivot to 88 degrees4 powered by two hydraulic rams which operate up to 15 times per day5 and take two minutes to fully open.6 Two 55-metre (180 ft) high masts are fitted to the lifting leaves, the top two metres illuminated with white LED lights.7 Four 7-metre (23 ft) high pillars housing the barriers, lights, speakers and traffic controls which link the bridge with the control room are located on the two fixed spans adjacent to the lifting section.
The lifting bridge spans Backwater Channel between Hamworthy and Poole port and will “unlock” 26 hectares of brownfield land for regeneration.
Featured in March 2012
Featured in group March 2012
Taken with an OIympus E-P1 Compact camera
Pencil sketch edited in Picnik