"The planned Bay Bridge section will be a huge success and will be a lasting example of American engineering expertise for a century or more."@MJG: With respect to the new Eastern tower of the Bay Bridge, it is evident that your commentary is completely divorced from reality. Construction is well past the planning stage. It has been, theoretically at least, completed, and has been in service for some time now. Ironically your comment regarding American engineering expertise may well be accurate, although perhaps not in the sense that you meant it. Here is a short list of recent articles from the San Francisco Chronicle:
• March
1, 20
15 Bay Bridge leaks: Toll payers on hook for Caltrans' blunders
• March
16, 20
15 Tests of Bay Bridge rods find more widespread cracking
• April 3, 20
15 Anchor rod on Bay Bridge may have snapped
• April 6, 20
15 Snapped anchor rod adds to Bay Bridge concerns
• April 23, 20
15 Caltrans was warned of Bay Bridge leaking before span opened
• May 5, 20
15 Ominous signs of problems with new Bay Bridge foundation
• May 7, 20
15 Bay Bridge news gets worse: Tower rod fails key test
• May 9, 20
15 Plague of problems puts Bay Bridge seismic safety in question
• May
11, 20
15 Bay Bridge revelations are 'game changers,' panel chief says
• May
11, 20
15 The bridge oversight panel approved spending up to $4 million in tolls to find out the extent of the Bay Bridge's problems.
Your historic footage of the Tacoma Narrows disaster is well-known, except perhaps to the current crop of engineers responsible for the Eastern span of the San Francisco Bay Bridge. At this point the ability of the new span to resist, without serious damage, the earthquake that it was allegedly designed to handle is very much in doubt. Evidently neither a spreadsheet nor Monte Carlo modeling was used by the bridge engineers.
Unfortunately, subscription to the Chronicle is required for these articles, so I haven't provided linkage. If you are interested I suspect that corroborating information is available on the internet.
Edit/Add: Thanks to later info from msf, here are some links that should work to illustrate many of the above references: SFGate is pretty good at providing access to Chron articles.
Try here: http://www.sfgate.com/author/jaxon-van-derbeken/ (a list of recent articles by the reporter via SFGate), starting with the most recent (updated Monday): http://www.sfgate.com/bayarea/article/Salty-water-swamping-some-Bay-Bridge-rods-6268443.phpThanks much, msf!
Regards- OJ