BS Steels has been involved in preparations for the introduction of free-flow tolls at the Dartford Crossing from October 2014. The existing toll booths will be replaced by a system of remote payment, using vehicle detection systems mounted on steel gantries.
Works have already been under way to install gantries and signage. This work must be carried out overnight and at weekends, within tight time windows, to minimise impact on road users. Partnering with Osborne, BS Steels has been involved with the unloading and installation of gantries, and sign support assemblies, to approaches to both the QEII bridge and the tunnel. Additional emergency work included manufacture of M48 diameter galvanized Holding Down Bolt Assemblies.
Also pictured are test gantries, designed and manufactured in BS Steels’s Portsmouth workshops. These were commissioned by Balfour Beatty for a 1km replica stretch of the M25, being set up at RAF Wroughton, near Swindon. Manufactured from 457 diameter Circular Hollow Section, the eight gantries will replicate those to be installed at Dartford, complete with supporting structures for traffic lights, cameras and other electronic equipment. This will allow trialling in preparation for the major works to reconfigure the roads and traffic management systems.
Also within the Dartford Crossing vicinity, BS Steels has surveyed, designed, manufactured and installed Stainless Steel brackets to support an existing 800 diameter Thames Water Pipe. This pipe is connected to the steel structure under ‘Bow Arrow Bridge’, part of the A282 connecting the M25 either side of the crossing. The pipe is also suspended over busy railway lines, making safe access a complex issue. BS Steels was commissioned by Balfour Beatty, and developed the design with Atkins.