Tunnels, Bridges and Viaducts

OZAAK CO. Inc. delivers complex civil engineering structures including road and railway tunnels, bridges, and viaducts. Our specialized teams handle the demanding technical requirements of these critical transportation structures.

Our Services in This Sector

• Tunnel Construction: NATM (New Austrian Tunneling Method), TBM (Tunnel Boring Machine) support, cut-and-cover tunnels, and tunnel finishing works including ventilation and lighting systems.
• Bridge Construction: Reinforced concrete and prestressed concrete bridges, steel bridges, balanced cantilever construction, and incrementally launched bridges.
• Viaduct Works: Multi-span viaduct construction using segmental, cast-in-place, or precast methods for highway and railway crossings.
• Foundation Works: Deep pile foundations, caissons, and ground improvement techniques for structures in challenging geological conditions.
• Rehabilitation: Structural strengthening, seismic retrofitting, and repair of existing bridges, tunnels, and viaducts.

Our Experience

Working with KGM, TCDD, Cengiz, Nurol, Doğuş, Makyol, and Tekfen on major tunnel, bridge, and viaduct projects, we bring proven capability in delivering complex heavy civil engineering structures.