Haliç Bridge is a highway bridge on the Golden Horn (Turkish: Haliç) in Istanbul, Türkiye. It connects the neighborhoods of Ayvansaray in the southwest and Halıcıoğlu in the northwest. The bridge carries the motorway D-100.

The idea of building an additional bridge emerged when the daily traffic on the 2×3 lane Golden Horn Bridge reached the level of 160,000-180,000 vehicles per day. In addition to the maintenance and repair work performed, 2 new steel bridges with 2 lanes each were added on to each side of the existing bridge. The project was undertaken by the consortium  ENKA-IHI-Bayındır whereby ENKA underook the execution of steel and bored piling works, the foundations and reinforced concrete piers which constituted the substructure of the bridge. Çimtaş, a fully owned subsidiary of ENKA fabricated and erected 7,340 tons of the steel girders of the new bridges.

The fabrication and erection of the New Golden Horn Steel Bridges, ordered by IHI of Japan, one of the leading steel bridge contractors, were completed by Çimtaş, a fully owned subsidiary of ENKA,  in 16 months, combining advanced engineering expertise with a highly skilled workforce and the latest manufacturing, erection and information technologies.

Çimtaş Gemlik Works fabricated two units of steel bridges over the Golden Horn in Istanbul in 11 months. They had a total weight of 7,340 tons, composed of 74,000 steel elements, assembled by 242,000 m of welding and sustaining 462,500 bolt holes in a configuration of 184 blocks, each of which was 3,2 x 4,0×9,0 m.

Following the on-shore preassembly of the blocks, which involved pairing up two blocks into one of 18 m length, erection was also completed in 11 months over eight spans of bolting and welding, with the longest span reaching to 139.5 m and the heaviest lift weighing 100 tons.

7,000 tons steel structure fabrication and erection for the steel superstructure of the new bridges. Off-shore steel piling works. On shore in-situ piling works. Reinforced concrete piers. Improvement of the existing approach roads and interchanges. Excavation and filling works. Asphalting works.