Before reaching any conclusion it is engineering sense to make a complete study.
Ancient texts have identified this structure thousands of years before being picked by a NASA satellite.
This is the starting point. It has to be studied keeping the existing natural structure, a possible man made filling in the form of stones/soil/plantation etc. and time which is a major factor.
Several islands existing all over the world which lie just submerged in the water. This is a similar group of islands. The RAMAYANA states that filling with stones, trees, soil etc was carried out. It was not really necessary to fill to the bottom of the sea as a low lying group of islands existed...it was only necessary to keep a topping which could have been eroded over the period of time by the Bay of Bengal.....
Therefore, the truth is that it is possible that a path accross the sea could have been created using the available ground/sub-sea strata.....
Instead of being mouthpiece of politicians we expect the ASI only to highlight all possibilities and scenarios....also the damage this proposed canal could cause the the environment.....
Scienfitic sense with blessings of the unknown could compelte the story....
The dirty politicians yearning to fill their pockets should be kept at bay.....
The Islamic text also states that Adam the first humanbeing crossed this bridge...therefore does this structure have to be destroyed....NO NEVER....
