Interesting. There was a video posted on Youtube just yesterday which showed how London Bridge operates and talked about what a big deal it is to city traffic when it’s opened.
In fact, I believe the bridge was actually stuck open while the video was posted although it was certainly shot weeks ago.
Stuck for 12 hours must have been a nightmare for all the operators who appeared in the video.
https://www.youtube.com/watch?v=iitXhgif_lo
Ctl-alt-del.
There are a number of these bridges in my hometown. Much smaller, of course. Sometimes during the summer they’ll open them up for traffic and then are unable to close them due to the metal expanding in the summer heat. The fire department is called, and they hose the ends of the bridge down until they contract enough to close.
CC