Legislation provides for the concession to last a maximum of 30 years and is due to end in 2022. But it may end sooner if certain financial objectives are met. Current estimates are that those objectives will have been met around 2016, when costs are expected to have been recovered.
Once the concession ends the undertaking will pass to the Government, which then has the power to charge tolls for up to a further five years. No decisions have been taken with regard to tolls beyond 2016, or whenever the concession period ends.