A Quote by Henry Petroski
Typically, highway bridges have about 50 years. But over in England, they have iron bridges approaching 250 years. In France, there are Roman aqueducts that are approaching 2,000 years old. So a bridge can last a very long time if it's built properly in the first place and then maintained properly.
Related Quotes
The I-95 bridges were built in the early 1960s and are now more than 50 years old. The same vintage as the I-35 bridge that collapsed in Minnesota back in 2007, killing 13 people and injuring 145. The antiquated Skagit River Bridge in Washington state that collapsed last May after a truck hit one of the trusses was even older. And it's not just bridges. According to the American Society of Civil Engineers, 32 percent of the major roads in America are now in poor condition and in need of major repairs.
Federal agencies that own bridges have some of the worst records for on-time inspections. Nearly 3,000 bridges owned by U.S. government agencies went more than two years between checkups.
There are two kinds of comics; there are the ones who build bridges, and then there are the people who walk across the bridges as though they built them. The bridge builders are few and far between.
And Mel [Brooks] - you have to understand this important point - he had done "The Producers" for $50,000 over two years, and he didn't make a penny from it. And then he did "The Twelve Chairs" - $50,000 for two more years and didn't make a penny from it. That's four years of work. And then they offered him quite a bit of money to direct "Young Frankenstein," and he took it.
I learned that the first technology appeared in the form of stone tools, 2.6 million years ago. First entertainment comes evidence from flutes that are 35,000 years old. And evidence for first design comes 75,000 years old - beads. And you can do the same with your genes and track them back in time.
Bridges are burning all around us; bridges to responses that might have mitigated the already brutal (and just beginning) ravages of Peak Oil; bridges to reduce the likelihood of war and famine; bridges to avoid our selectively chosen suicide; bridges to change at least a part of energy infrastructure and consumption; bridges to becoming something better than we are or have been; bridges to non-violence. Those bridges are effectively gone.
There are legitimate concerns long term, in my view, about nuclear war and policy and stuff like that. But the world has become a better place every 20 years for the last 2,000 years.
That whole day [ of the space flight] is very vividly impressed on my memory because it was such a new experience. We hadn't done that before. And then I've recalled it so often since then I think that it's a - it's remained very vivid over the past 50 years, seems to me like about a week or two instead of 50 years.
Some say that now that 50 years have passed, we would like another 50 more years to celebrate once again; that means it will be 100 years. After one hundred years, I will be 118 years old.
If women built the bridges or were meant to build the bridges, then they would have done it.
Hans Rosling typically would go into the room, and he would ask the audience questions. Often they had to answer them with clickers or raising their hands or something. We get [data] wrong because 50 years ago that wasn't the case and because we haven't had these graphics we don't realize that over the last 30, 40, 50 years things have changed dramatically. And you see how the world has been getting a better, safer, more homogeneous place. It just has.
My first time to Rome was when I was backpacking with my best friend around Europe for a month at 18 years old, so I remember that excitement of being away from home properly for the first time.
When we gaze at a star in the Milky Way which is 50,000 light-years away from our sun, we are looking back 50,000 years in time." "The idea is much too big for my little head." "The only way we can look out into space, then, is to look back in time. We can never know what the universe is like now. We only know what it was like then. When we look up at a star that is thousands of light-years away, we are really traveling thousands of years back in the history of space.
We humans have this idea that the ocean is so big, so vast, so resilient that it doesn't matter what we do to it. That may have been true 1,000 years ago. But in the last 100, especially the last 50 years, we have destroyed the assets that make our lives possible.
The earth's history over the past several million years is that for every 100,000 years, we go through a dramatic climatic cycle where we get 90,000 years of ice age and 10,000 years of a warm period. I think people today just have the expectation that we deserve a perfectly benign climate forever.
I'm 58 years old. I got married for the first time - it's about time, right? Growing up as a gay woman, you just don't ever think about that, and then I thought, about 10 years ago, 'You know, I think within 10 years gay marriage will be legal.' And here we are, 10 years later, making it legal.
Related Authors
Brian Tracy Quotes
American
Author
Cassandra Clare Quotes
American
Author
Frederick Lenz Quotes
American
Author
Henry David Thoreau Quotes
American
Author
J. K. Rowling Quotes
English
Author
Jodi Picoult Quotes
American
Author
John Green Quotes
American
Author
Joyce Meyer Quotes
American
Author
Marianne Williamson Quotes
American
Author
Neil Gaiman Quotes
British
Author
Richelle Mead Quotes
American
Author
Rick Riordan Quotes
American
Author
Robert Kiyosaki Quotes
American
Author
Stephen King Quotes
American
Author
Terry Pratchett Quotes
English
Author
Virginia Woolf Quotes
British
Author