Thank you Don, it was a very lucky thing that I was carrying my complete backpack, which, among other things, contained my remote control shutter release thingy from Canada.
No matter how hard I tried, with the very slight breeze, and my inability to stand super steady on the suspension bridge, I affixed my remote shutter release, walked to the edge of the bridge, waited until I could see no discernible movement, then squeezed the remote button. Running a ¼ of a second shutter speed, any kind of movement would have been detrimental.
I was helped by the fact the area is in a severe drought and the creek has stopped flowing, sort of forcing the ducks into this small area where I luckily had an overview.