Dahisar - A disaster was averted on Tuesday night when a concrete slab 10 feet long which was part of Dahisar skywalk collapsed. Police and civic officials reached immediately at the site. One of the commuters was injured badly in the accident. The skywalk was constructed eight years ago. Although debris from the broken floor fell on the road, no other casualties were reported. JCB machine rushed on the mishap site and cleared the debris. This Skywalk is a very busy area as it is the only bridge connecting the railway station.