Mahakam Bridge, Steel bridge in Samarinda, Indonesia.

The Mahakam Bridge is a steel structure that spans the Mahakam River and connects different parts of the city of Samarinda in East Kalimantan. The structure allows pedestrians, motorcycles, and cars to cross between the two riverbanks.

Preparations for the bridge began on 13 April 1982, when Governor Ery Supardjan and Public Works Minister Purnomosidi Hadjisarosa joined a site survey. The first pile was driven on 6 October 1983 under Governor Soewandi, and the last bolt was fastened on 4 October 1985. President Soeharto inaugurated the bridge on 2 August 1986, accompanied by Governor Soewandi and Public Works Minister Suyono Sosrodarsono.

The bridge serves as a daily crossing where local residents move between neighborhoods on foot, by motorcycle, and by car. The river below has long shaped how people in the city experience their surroundings and organize their daily routes.

The bridge is open daily for pedestrians and vehicles, offering a direct crossing between neighborhoods. During peak traffic times it can get crowded, so crossing early in the morning or late afternoon provides a more relaxed experience.

The steel truss is made of 80 isosceles triangles, each 10 metres apart and 10.5 metres tall, joined by top and bottom chords. Laid end to end, the bridge's steel members would run about 2.4 kilometres. The design came from the Dutch Hollandia Kloos system, using steel produced in Indonesia.