A Toyota Matrix Sport car conveying three persons, including a couple has skidded off the Ikire Ibadan Express way and plunged into the Asejire dam on Monday.
Asejire Dam separates Osun and Oyo states.
Punch correspondent observed that two male occupants of the car, which was completely submerged in the river, were rescued alive by local divers, but the only female occupant in the car could not be brought out of the water for over one hour after the accident.
Eyewitnesses at the scene told Punch correspondent that the blue colour vehicle first hit the concrete at the edge of the bridge before somersaulting into the river.
One of the people at the scene said the vehicle landed on a rock inside the river before it eventually submerged in water.
Motorists and other persons, who trooped to the scene, called on the Federal Government to erect railings on all the sides of the bridge to prevent vehicles from plunging into the river.
Some of them said such accident was common on the bridge because there was nothing to prevent any vehicle that skidded off the road from falling into the river.