Down at the scene where all the action was taking place on 18th August 1966, here's the crowd scattered all around the bridge area, waiting patiently for the grand opening.
The top image has quite a lot of folk gathered around the Dock Street bridge approach section, and you can make out the masses away in the distance over at the enclosure where the official ceremony was going on.
The middle picture catches the moment the Queen Mother's car drives up onto the the bridge, with plenty of flag waving as she passes.
The last snapshot shows the initial excitement over with some of the spectators choosing to depart, while most of the others hang on to watch the royal wheels return.
I can remember being driven across the bridge on this very day, only in the evening - along with thousands of others who decided to cross it on opening day!
Photos from Gordon C.