Interbiak, the Provincial Public Company, is in charge of managing Bizkaia's road infrastructures, such as some tolls, motorways, and tunnels.

More about Interbiak

Bidesaria, our digital platform

Obtain your transit invoices, access subsidies and discounts, or consult your journeys. All in one place and completely free of charge.

Interbiak’s activities

Interbiak’s activities

Service Charter

User support and processing of Interbiak subsidies


View Interbiak's public contracts and everything you need to know about electronic tendering

For any questions contact us through the form.