Thank you both for your info. The video shows the green bridge, which looks plenty wide. There's another bridge though, a white one, closer to the Grand Floridian. That's the one that, to me, looks more narrow and still has the posts at each end. Sorry if that wasn't clear in my first post.
Nope, I knew which one you were referring to. That short video has only the green swing bridge, but the bridge photos are of the white one with the red post.
I think it will probably be fine.
Look at this snippet from another photo:
That pillar is about waist high. It easily could lay on its side on either side of it. So at least 3-ish feet to either side of the pillar, enough space for an
ECV to go through.
(**ETA: from the info below about the adult needing a ladder, the red pole could be as tall as an adult, but we'll say it is going to be at least 3' tall possibly as much as ~4+' tall; not possible to really tell based on the photo as the perspective is misleading. See below.)
Disney's ECV size requirement is "32″ x 52″ maximum size for use on the Disney Transportation System". 3' = 36" and it probably is more
Here are some screenshot zoomins from this blog from when it was under construction:
https://ziggyknowsdisney.com/grand-floridan-magic-kingdom-walkway/
you can see that the sides are TALL - taller than an adult -- see the worker standing on a ladder beside it and the van and truck parked near it ? They are not handrail height like the railings on the green bridge, which really skews the perspective even more.
See also the white fence sections nearby once it was installed; each of those is probably going to be 6' long or more:
And car and containers in distance:
On this blog https://**************.net/2020/11/grand-floridian-walkway-opens-ba1/ they have a picture of a person on the green bridge and you can see that the railing on that bridge is somewhere between waist-underarm; here is a screenshot snippet:
Hope this helps.