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SU-YAPI Engineering & Consulting Inc.



Duration of Services

Project Name

Scope of Services

Taisei / Gama / Nurol Joint Venture 2004-2012 Railway Bosphorus Tube Crossing (Marmaray Project) Cut and cover tunnels from Km 0+300 to km 4+080 and km 13+420 and km 13+860 including bored-tunnel portals
General Directorate of State Railways, Ports and Airports (DLH) 2004- 2006 Ankara – İzmir Railway Final Design
13 nos rail tunnels
General Directorate of Highways 1998- 2005 Samsun Western Bypass Road Final Design
1,01 km twin-bore tunnel
General Directorate of Highways 1998- 2003 Ankara – Kastamonu Highway Ilgaz Mountain Tunnel Crossing Preliminary and Final Design
4,38 km long, 8.00 m wide single-bore tunnel
General Directorate of Highways 1996- 2001 Mengen – Devrek Highway Dorukhan Tunnel Preliminary and Final Design
1,02 km-long highway tunnel