The Rumpiang bridge is a very impressive construction with its 200 m long arch in a framework design. With an overall length of 753 m, it spans the River Barito on the south-east tip of Borneo. Jembatan-Rumpiang connects the town of Marabahan with Banjarmasin, the capital of the province of South Kalimantan.
This region is characterised by a tropical climate with average temperatures of 27°C and a relative humidity of over 80 percent. Only hot-dip galvanizing offers permanent protection against corrosion for steel parts in these climatic conditions. This is why all steel parts of the bridge were hot-dip galvanised in accordance with DIN EN ISO 1461 and joined together by screwed connections to avoid any weak points in the corrosion protection. This includes the arch construction just as much as the lattice supporting structure for the carriageway and the crash barriers on the sides.
The hot-dip galvanizing of the installed 1,100 tons of steel was carried out by ZINKPOWER Austrindo, on the other side of the Java Sea in Indonesia.
© Waagner Biro AG