Switzerland will soon tender for companies to build and supply a mobile system for physically shifting traffic away from road crews – the Astra Bridge concept.
The federal highways agency - FEDRO - will be asking general contractors to submit bids starting this summer for the Astra Bridge system, according to the agency.
The system, to be used on motorways, includes ramp sections at each end of what amounts to a train of elevated connected road sections. Vehicles run onto the top of the train which is