The Agate Bridge at the Petrified Forest National Park, Arizona. June 13, 2011.
The Agate Bridge in the Petrified Forest National Park is a 110-foot long petrified log across a gully washed out by centuries of flood waters. The stone log, which was harder than the sandstone around it, resisted erosion and remained suspended as the softer rock beneath it washed away.
After the Petrified Forest National Monument was established in 1906, conservationists felt the bridge needed architectural support. In 1911 masonry pillars were erected beneath the log. In 1917 the pillars were replaced by the concrete span seen in the picture above.
Current National Park Service philosophy allows the natural forces to continue to act upon unusual features. If it was discovered today, the Agate Bridge would be left in its natal state. Even with the support placed under it nearly a century ago, the same forces that created the Agate Bridge will eventually cause it to fall.
For another perspective of the Agate Bridge click HERE.
Tags: Arizona, Petrified Forest, Travels
Senior Moments 
August 18, 2011 at 5:56 am |
This is so interesting!
August 18, 2011 at 6:46 am |
another geological surprise that you have found. It makes sense to let erosion follow its natural path.
August 18, 2011 at 7:36 am |
It is so very cool!
August 18, 2011 at 7:59 am |
i am glad we have finally learned to let nature do it’s thing and not pour concrete in or on or under.
August 18, 2011 at 8:05 am |
Lucky you! I’ve never been to the Petrified Forest National Park yet.
August 18, 2011 at 8:36 am |
I really like this…wonder how much that thing weights?
August 18, 2011 at 9:46 am |
I agree with Sandra, about time we finally learned to let nature do its thing — we’ve got enough concrete for several worlds! Terrific capture of an amazing sight, George! The Petrified Forest is indeed an awesome place! Hope you have a great day!!
Sylvia
August 18, 2011 at 11:19 am |
Heavens!! Well, I’m assuming and hoping that no one is allowed ON this bridge?? I’m sure that is one that you and Betsy would not attempt!
August 18, 2011 at 11:23 am |
That is pretty amazing.
August 18, 2011 at 11:37 am |
Thanks for the posting the picture and telling us about it. I wonder how much weight it can support. I’m assuming you aren’t allowed to walk on it.
August 18, 2011 at 4:54 pm |
George
Having noted that two of your viewers enquired if people were allowed onto that bridge, I hope there are signs ‘”DO NOT CROSS BRIDGE” in place. It would be completely foolhardy to try that stunt. Some “clots” would I presume. Maybe the approaches are sealed off?????
Very interesting post.
Colin
August 18, 2011 at 10:31 pm |
What a great find!
August 19, 2011 at 8:24 pm |
That is just amazing! Wouldn’t mind seeing that one in person.
August 21, 2011 at 9:23 am |
Amazing! great knowing about it in detail
August 26, 2011 at 9:06 pm |
I am always learning from you & Betsy 🙂 such amazing details!