Client:Koncesijsko društvo ARZ d.d.
Period:September 1998 – January 2001
- Contractor’s Chief Site Manager, Safety Coordinator II, Planning Engineer and the Contract Manager
ZAGREB – RIJEKA MOTORWAY, VIADUCT „DREŽNIK“
Two viaducts „Drežnik“ 2.5 km total span. Most spans were 32.5 m except main span crossing river „Kupa“ which was 70 m. Bored piles 25 – 30 m long – 450 pieces ϕ 120 cm, precast pre-stressed girders – 616 pieces, partially post tensioned, partially mixed pre and post tensioned, 90 tons of weight and 32.5 m of length each. Main span 70 meters were bridged by cantilever precast beam (17 m console on both sides) installed on top of pier, temporarily stabilized by high grade threaded bars. Then the central beam was installed in between and wet joint cast on site, which was followed by the post tensioning of the continuity supplementary cables going all the way along the superstructure covering negative bending moments above the piers.