The Indonesian Ministry of Public Works (MoPW) commissioned the construction of the Mahakam IV project, a twin-bridge system crossing the Mahakam River in Samarinda, East Kalimantan. The project includes two separate bridges: a 1,388-meter-long cable-stayed bridge with a 220-meter span, 17-meter width, and 22-meter vertical clearance, and a 740-meter-long main bridge with a 14-meter width and 25-meter vertical clearance.

Dextra was involved early in the project, providing BIM tools to integrate the tension support system into the overall structural design.

In total, over 60 carbon steel tension rods of various lengths were delivered to the construction site. The system’s forks and turnbuckles allow for adjustable lengths to meet specific site requirements. Dextra’s tension rod system efficiently absorbs the structure’s tension loads, with a range of strength grades and surface finishes available to meet both technical and aesthetic needs.

The project was completed and opened to traffic in 2019.