Jamuna Bridge cracks

M. Fakhrul Islam, Applied Chemistry, Rajshahi University
The cracks are developing on the Jamuna bridge slabs very slowly. The cause behind the cracks is not definitely known. However there is definitely some kind of fault in the construction of this very big bridge. One striking feature of the bridge is the construction of the steel towers for the electric lines on the same side of the bridge as the railway track. Whether this put the slabs on unequal stress is best known to the engineers of the bridge. If it does, there should be longitudinal cracks parallel to the bridge slabs. Another important consideration is the geology of the site. It is now known that the Jamuna river more or less defines the line of contact of the Indian and Asian tectonic plates. The plates are supposed to be on continual slow movement all the time. If the Jamuna Bridge spans these plates , there should be deleterious effects on the bridge no doubt, as the slabs are placed on the columns constructed deep underground. There should be continuous study on the bridge.