 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 weight of the bridge were removed in 1990 to prevent possible accidents were they to fall.