SURAMADU BRIDGE INDONESIA

SURAMADU BRIDGE

Bridges between islands along the 5,438 meters of which not only the longest in Indonesia, but also in Southeast Asia. Suramadu existence represents a new milestone in the development of transportation infrastructure construction in Indonesia. Before Suramadu built, had raised doubts whether it is possible to build a bridge in the area of ​​the fault and earthquake? What about the sea breeze in the famous Madura Strait tight, would not affect the construction of the bridge?

The study was finally carried out in detail during the years 2003-2004. More research is a technical study conducted on 12 items that are mostly in the form of soil parameters. In terms of seismic hazard analysis, for example, the conclusion, in the vicinity of the bridge can not find an active fault. Based on the earthquake catalog also not found an earthquake with a magnitude above 4 on the Richter scale so that the conditions in the vicinity of the bridge is quite stable.Also conducted in-depth review of the basic contours of the sea, ocean currents, and the influence of the bridge plug . It turns out that everything is possible to build a bridge connecting the two islands. As for the wind, the wind turns the study based on the transverse velocity of about 3.6 kilometers per hour up to a maximum of 65 kilometers per hour.

Longest bridge which carried his first pole erection on August 20, 2003 by President Megawati Sukarnoputri today can withstand earthquake shocks to 7 on the Richter scale. This bridge was designed with anticorrosive system on steel pile foundation. To create a more flexible space for vessels, at the middle span of Suramadu built two tower ( pylon ) as high as 140 meters respectively from the top of the water. The second tower is supported as many as 144 pieces backbone cable ( cable stayed ) and planted with foundations as deep as 100 meters to 105 meters. " The total length of approximately 240 meters tower. 's Something that has never been done before, " said Director General of Highways, Ministry of Public Works Herman Dardak.

Overall, construction spending Suramadu approximately 650,000 tons of concrete and approximately 50,000 tons of steel. Not surprisingly, public works claims Suramadu as a mega project which spent a total of Rp 4.5 trillion. The bridge is designed to withstand strong 100 years or nearly equal standard English that reached 120 years . Because in the middle of the ocean, potentially constrained Suramadu large wind factor that potentially occur in the middle of the ocean. To ensure the safety of vehicles passing over the Suramadu, Department of Public Works will build a central monitoring weather conditions, especially wind. " If the wind speed has reached 11 meters per second, or about 40 kilometers per hour, the bridge had to be closed for two-wheeled vehicles for the safety of motorists, " said Public Works Minister Djoko Kirmanto.The high cost of development thinking and Suramadu expected to foster economic stretching the country, especially in East Java.