The SABAH AL AHMAD CORRIDOR (formerly Al Bustan) was part of the Qatar Expressway Programme, designed to provide a 14 km free-flow traffic corridor from the north of Central Doha to the south. The project aimed to improve overall connectivity—particularly to FIFA World Cup stadiums—by upgrading the existing main road and replacing signalised intersections with overhead bridges and connecting ramps.
Qatar’s Public Works Authority (Ashghal) awarded a $774 million design-and-build contract for the project to CCC (Consolidated Contractors Group).
As part of the works, Junction B6 was developed as a key interchange, improving the connection at the crossing of the Al Shamal Road highway, which passed over the new Al Bustan Street alignment via an existing bridge. The new junction featured eight bridges (B1 to B8), with two levels of ramps reaching up to 30 metres above ground level.
Bridges B3 to B8 were constructed using the balanced cantilever method with precast concrete box segments, spanning up to 90 metres. VSL Middle East was engaged by CCC to carry out the precasting and erection of these structures.
Due to crane access restrictions in certain areas, some spans required custom-designed lifting frames installed on the deck. VSL Middle East engaged VSL Technical Centre Singapore to design these frames, which were used to lift, position, and rotate 80-tonne precast segments.
CaSE Design was appointed as the Independent Checking Engineer for these complex temporary works, providing assurance for the lifting systems designed and implemented by VSL.
