A1 – Section Gorica-Bilješevo – Vijenac Tunnel
Construction of the Vijenac Tunnel – a section of the 5c Corridor highway between Gorica and Bilješevo – began in May 2011. Vijenac is a twin-tube tunnel, 5,863 meters in length. It is the most technologically advanced tunnel in Bosnia and Herzegovina, and one of the most advanced in the region.