Shops under the City Fly overs

Fly-overs are meant for smooth movement of traffic and for decongesting the important roads. However, we find that the space under and the pavements near the fly-overs are enrcoached by the hawkers. 

Especially, the Usman road bridge wears a very crowded and congested look always due to the make-shift shops on the platforms all along the bridge up to Pothy's. 

It's highly dangerous that if by accident( like the bus overturning on the Anna fly-over), any vehicle loses control and falls on the side of the bridge, the fatality

will be heavy.

Why the concerned authorities Not caring, foreseeing, and taking steps to vacate these enrichments to safer place?

Any prudent administration will avoid such mishaps and human losses.