Subway line extension
Sofia, Bulgaria

Subway line extension, Sofia, Bulgaria

Subway line extension
Software used: Advance Steel
Location: Sofia, Bulgaria

Design office: AVV Engineering

Project description:
The extensions are applied to the main subway lines in Sofia:
Line 1 (north-west): Mladost 1 - Druzhba - Sofia International Airport
Line 2: Obelya - Nadezhda - Central Station - Nedelya Square - Boulevard Cherny Vrah

The steel structure is a 230-ton underground bridge, with a 64 m opening. Because of the curved path, the structure is asymmetrical, so the first and the last beam have different openings. The joints are welded and connected with high strength bolts.


Subway line extension, Sofia, Bulgaria

Subway line extension, Sofia, Bulgaria

Subway line extension, Sofia, Bulgaria

Subway line extension, Sofia, Bulgaria

Subway line extension, Sofia, Bulgaria

Subway line extension, Sofia, Bulgaria

Subway line extension, Sofia, Bulgaria