UK A bridge that allows traffic to pass over a road, river, railway etc.
No major platform improvements have been possible in the past because the piers of an overbridge at the north end of the station prevented respacing of the tracks.1951 May, “Track Layout at Euston”, in Railway Magazine, page 290:
On the subject of permanent structures, the NYMR has Grosmont Tunnel (lined throughout), but only five overbridges, three of the last-named being the County Councils's ^([sic]) reponsibility for repair.1979 August, Michael Harris, “A line for all reasons: the North Yorkshire Moors Railway”, in Railway World, page 412: