Connel Bridge which is a cantilever bridge that spans Loch Etive at Connel in Scotland. Built as a railroad bridge in 1903 a car lane was added later.
The bridge was shut to vehicle travel when trains came thru. In 1966 the railroad shut down and the bridge was converted to solely vehicles and pedestrians but it's still too narrow for 2-way vehicle traffic so there are traffic lights at both ends to control vehicle passage.