If it is a natural formation, Ram has not built it.
If Ram had built it, then he had interferred with nature, and destroyed ecology, for his selfish needs. Removing it will bring ecology back to its natural state.
These are the only 2 possible positions. If you think you have common sense, take the option you find appealing.
Deep within your heart, you know that all monkey-helped-ram-built-bridge is all fiction, but still want to oppose the project, from now on, every time, you dress up and go out of your house, you will constantly imagine these words written on your forehead - 'I am a moron'