The two Waterloo bridges, old and new, are used for each stream of traffic.
Item title reads - Waterloo bridge old and new are both being used - one for each traffic stream. London.
L/S as the camera pans across the two bridges side by side, with traffic driving up and down them, M/S of the buses and trucks driving on and off each one. M/S of the traffic driving under the bridge covered by iron railings, we see it from the point of view of a car driving along, lots of traffic drives along with us.