Location: Istanbul, Türkiye
Client: IHI Corporation
Scale: 822,2 m long, 31,2 m wide, continuous steel girder with orthotropic slab highway bridge

The Old Golden Horn Bridge, built in 1974, is part of a long-distance expressway network connecting Asia and Europe. It also plays a crucial role in linking the old and new parts of Istanbul. Increased traffic volume and vehicle weight caused damage to the bridge’s components, making it vulnerable to the expected earthquake in the Marmara region.

Services provided included quality control, project management, construction supervision, and the adaptation of design and erection documents to local conditions. The work involved reinforcing piers and beams, replacing the elastomer bearing, installing a falling-down prevention device and a transverse displacement restriction device, replacing the expansion joint, and expanding the pier foundations.