The Riyadh Metro is a rapid transit system under construction in the Kingdom of Saudi Arabia. It will be 176 km (109 mi) long with 6 lines and 85 stations, including underground, elevated and at-grade sections. Its construction started in April 2014 and is expected to be completed by 2019, creating about 15,000 jobs in the state. Saudi officials approved the plan in 2012, as the capital’s population is expected to increase by 50% by 2035. The new metro system will fulfil the demands of the growing population, as well as reduce traffic jams and improve air quality.