A bridge which carries a highway or foot-walk over another artificial line of travel, as a railway: in distinction from a crossing of the two ways at grade.(noun)
The Century Dictionary (Public Domain)
Use "over-bridge" in a sentence
"Media reports suggest that the collision was so severe that the roof and the sides of one of the compartments mounted the over-bridge across the tracks in the station."
"The Maoists attempted to blow up the Manihari road over-bridge, using 'milk-can bombs', in a bid to disrupt the transport link between the target of the attack and the district headquarters at Sitamarhi."
"As the escalator only worked one way upwards, we used to keep going up using the escalator, running down the stairs on the other side and running round the over-bridge to go up again."