KEO International Consultants has won a contract from Saudi Oger to design the 3.5km elevated rail viaducts, switch bridges, long span bridges and 131 piers supporting the Riyadh monorail system. KEO is to work with Bombardier, Freyssinet and Scott Wilson to deliver the project. Design completion of the project is expected in 2011, while construction is set to be completed in 2012.