Video: Sabo Bridge cables vibrate like guitar strings, July 2011
|TC Daily Planet|
|Video has surfaced of the Sabo bridge cables playing "The Wind Cries Mary."|
News of the bridge failure caused some to wonder whether Hennepin County made a mistake opting for such a "fancy" design. Anecdotes began circulating from folks who had seen the bridge's string-like cables fluttering in the wind.
Now, video has surfaced from last summer of those cables vibrating like a Hendrix-plucked guitar.
Earlier this week, the Star Tribune reported that engineers expressed concerns about the Sabo bridge's cable plates while the structure was being constructed. Officials determined those concerns were satisfactorily addressed and the bridge opened to bike and foot traffic in 2007.
The Southwest Journal's Dylan Thomas offered up the following tweet in response to the video:
Without further ado, here it is:
@_taylor_ Date on Sabo Bridge video is last July. Maybe the bridge was designed to have some give in a strong wind, or maybe this was a sign-- Dylan Thomas (@DthomasJournals) March 9, 2012
We're no engineers, but it's hard to imagine bridge designers intended for it to allow for this much vibration.
Sign of impending failure or not, it certainly isn't reassuring to watch a bridge play "The Wind Cries Mary" while you're standing on top of it.
-- Balky Sabo bridge consultant same firm that consulted on I-35W bridge before it collapsed