Moderator: Nicole Marie
Trumpetmaster wrote:Don't the engineers check for stress, wear and tear over time?
It just doesn't make sense.....
Someone has a lot of explaining to do..........
Shapley wrote:Famed Brroklyn Bridge Fails Latest Inspection
2,027 bridges in New York City alone! Of course, that would include everything from the concrete-slab-over-a-ditch type all the way through to the majestic Brooklyn Bridge.
Selma in Sandy Eggo wrote:There's been a list of "deficient" bridges on one of the news websites - I don't recall which one and I'm too lazy to go hunt it up again. The San Francisco - Oakland Bay Bridge was on it. Twice.
Shapley wrote: I do agree, however, that a 40-year-old bridge is not that old. The Railroad bridge over the Mississippi River near my home was opened in 1905, and continues to carry trains much heavier than the steam-powered trains it was designed for.
The Interestate Highway system was designed by President Eisenhower in the mid 1950s. My comment was that a bridge built in the '60s would be one of the oldest in the system, and therefore would probably have been designed to different standards than the bridges currently in the system. In my opinion, the bridges built by the government for the Interstate Highway system are designed lighter and more cheaply than bridges built prior to them. I realize there are new technologies and all that jazz, but my own unqualified observations lead me to believe that they have a lesser safety factor than 'traditional' bridges.
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