 The Ampera Bridge is a vertical-lift bridge in the city of Palembang, Indonesia. The Ampera Bridge is the landmark of the city and use for connecting two regions of the city. It connects Seberang Ulu and Seberang Ilir that was separated by Musi River. For a few years after it was opened, the center span could be lifted at a speed of approximately 10 meters per minute to allow ships of up to 44.5m in height to pass underneath with a mechanical system and 500 tons ballast weights. However this only occurred a few times, and after 1970 it could no longer be opened. The official reason for this was that the 30 minutes needed to raise the bridge is too long for a delay. Now, only a 9 m ship that can pass under the bridge. However, according to architect Wiratman, who acted as a consultant before the construction, the design of the bridge was flawed from the outset because of the soft mud on which it was built. He maintains that his concerns were ignored for political reasons, and that as the towers' foundations shifted, the bridge deformed to the extent that it could no longer be opened. The ballast weights needed to balance the wight of the bridge were removed in 1990 to prevent possible accidents were they to fall.
The Ampera Bridge is a vertical-lift bridge in the city of Palembang, Indonesia. The Ampera Bridge is the landmark of the city and use for connecting two regions of the city. It connects Seberang Ulu and Seberang Ilir that was separated by Musi River. For a few years after it was opened, the center span could be lifted at a speed of approximately 10 meters per minute to allow ships of up to 44.5m in height to pass underneath with a mechanical system and 500 tons ballast weights. However this only occurred a few times, and after 1970 it could no longer be opened. The official reason for this was that the 30 minutes needed to raise the bridge is too long for a delay. Now, only a 9 m ship that can pass under the bridge. However, according to architect Wiratman, who acted as a consultant before the construction, the design of the bridge was flawed from the outset because of the soft mud on which it was built. He maintains that his concerns were ignored for political reasons, and that as the towers' foundations shifted, the bridge deformed to the extent that it could no longer be opened. The ballast weights needed to balance the wight of the bridge were removed in 1990 to prevent possible accidents were they to fall.Source:Wikipedia
https://en.wikipedia.org/wiki/Ampera_Bridge
https://id.wikipedia.org/wiki/Jembatan_Ampera 
