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Dam Bridge


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#1 supermom

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Posted 23 January 2009 - 12:50 PM

Still building the bike path though.

Anyone heard if it is going to open early?

Just wondering.

The construction on the path has been really loud the last few days.

#2 mylo

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Posted 23 January 2009 - 12:55 PM

Latest News from FolsomBridge.com
http://www.folsombridge.com/

Sunday, February 25, 2007
New Folsom Bridge Construction to Begin

It really irks me when people setup communication channels, under the perfect domain, and never touch the thing sad.gif


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#3 Bill Z

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Posted 23 January 2009 - 12:55 PM

QUOTE (supermom @ Jan 23 2009, 12:50 PM) <{POST_SNAPBACK}>
Still building the bike path though.

Anyone heard if it is going to open early?

Just wondering.

The construction on the path has been really loud the last few days.

This week's Telegraph said March 28 is the official Grand opening date
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#4 mylo

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Posted 23 January 2009 - 12:56 PM

The city, however, has put a date on it:

From: http://www.folsom.ca...dge/default.asp
Folsom Lake Crossing to Open Saturday, March 28

Folsom Lake Crossing will open Saturday, March 28, just two years after construction began. The new bridge will have four lanes for traffic plus bike lanes and will connect East Natoma Street and Folsom-Auburn Road.

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#5 supermom

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Posted 23 January 2009 - 01:01 PM

I found this way cool site.

Tells how they actually build these types of bridges.

http://www.doklibrar...icles.php?id=43

#6 supermom

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Posted 23 January 2009 - 01:07 PM

QUOTE (mylo @ Jan 23 2009, 12:56 PM) <{POST_SNAPBACK}>
The city, however, has put a date on it:

From: http://www.folsom.ca...dge/default.asp
Folsom Lake Crossing to Open Saturday, March 28

Folsom Lake Crossing will open Saturday, March 28, just two years after construction began. The new bridge will have four lanes for traffic plus bike lanes and will connect East Natoma Street and Folsom-Auburn Road.

Cool, thanks for the info.

In one of those pics you can see my backyard!!

#7 bunny

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Posted 23 January 2009 - 01:07 PM

I saw a special on tv last year that showed how the golden gate bridge was built. Absolutely fascinating how they managed all of that with the technology of the time.

#8 mylo

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Posted 23 January 2009 - 01:09 PM

QUOTE (supermom @ Jan 23 2009, 01:01 PM) <{POST_SNAPBACK}>
I found this way cool site.

Tells how they actually build these types of bridges.

http://www.doklibrar...icles.php?id=43

Wowza, love those stats!

• Construct 2.1 miles of roadway and 1000’ Cast-in-place Segmental Cantilever Bridge.
• Approximately 1.2 million CY Roadway Material.
• Approximately 13,000 CY concrete.
• Approximately 3.2 million LBS rebar.
• Approximately 150 miles of Post Tensioning Strand.

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#9 supermom

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Posted 23 January 2009 - 01:51 PM

QUOTE (mylo @ Jan 23 2009, 01:09 PM) <{POST_SNAPBACK}>
Wowza, love those stats!

• Construct 2.1 miles of roadway and 1000’ Cast-in-place Segmental Cantilever Bridge.
• Approximately 1.2 million CY Roadway Material.
• Approximately 13,000 CY concrete.
• Approximately 3.2 million LBS rebar.
• Approximately 150 miles of Post Tensioning Strand.

When I think of the sacramento area--I do not think of Earthquakes, but, they site earthquakes as one of the reasons why they chose this bridge at this site.

Curious.

#10 Agent_007

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Posted 23 January 2009 - 02:05 PM

QUOTE (supermom @ Jan 23 2009, 01:51 PM) <{POST_SNAPBACK}>
When I think of the sacramento area--I do not think of Earthquakes, but, they site earthquakes as one of the reasons why they chose this bridge at this site.

Curious.

simple. Tahoe quakes and the Bay Area quakes. The valley can receive the rolling effects. We are in a geo-seismically active State. To not factor quakes would be shortsighted and endanger the public's safety.

#11 Bill Z

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Posted 23 January 2009 - 02:10 PM

QUOTE (Agent_007 @ Jan 23 2009, 02:05 PM) <{POST_SNAPBACK}>
simple. Tahoe quakes and the Bay Area quakes. The valley can receive the rolling effects. We are in a geo-seismically active State. To not factor quakes would be shortsighted and endanger the public's safety.

and even though they haven't shifted in awhile, there are active fault lines in the area.

Remember, that's why they stopped the Auburn Dam
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#12 ducky

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Posted 23 January 2009 - 02:17 PM

QUOTE (supermom @ Jan 23 2009, 01:51 PM) <{POST_SNAPBACK}>
When I think of the sacramento area--I do not think of Earthquakes, but, they site earthquakes as one of the reasons why they chose this bridge at this site.

Curious.


Folsom Dam is technically in the Bear Mountain Fault Zone. They did a study saying it could withstand a 6.5 earthquake.

This fault zone was one of the points brought up by opponents of the Auburn Dam when that was being discussed as it would have been located closer to that particular fault zone. Of course, most of California is earthquake country.

edit: What BillZ said. He beat me to it.

Oh, yeah, the Johnny Cash Memorial Bridge is way, way stronger than the lake crossing bridge.

#13 Darthvader

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Posted 23 January 2009 - 02:42 PM

QUOTE (Bill Z @ Jan 23 2009, 02:10 PM) <{POST_SNAPBACK}>
and even though they haven't shifted in awhile, there are active fault lines in the area.

Remember, that's why they stopped the Auburn Dam


I don't think that's the only reason the Auburn dam was stopped.
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#14 Bill Z

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Posted 23 January 2009 - 02:57 PM

QUOTE (Darthvader @ Jan 23 2009, 02:42 PM) <{POST_SNAPBACK}>
I don't think that's the only reason the Auburn dam was stopped.


From geo-engineering website
QUOTE
The 1971 San Fernando earthquake and the 1975 Oroville Earthquake had initiated more extensive geotechnical investigations. As a result of these investigations, a fault, which was part of the Foothill fault system, was identified and for that reason the design has changed to a curved gravity dam.

The construction stopped because the scenario of failures increased the public awareness and stopped the project. A failure of this dam would cause also the failure of the Folsom dam and would finally flood the city of Sacramento. Even though, this scenario was not so possible, the probability of the existent truncated fault to cause a movement of 8-12inches could not be discounted.

For that reason, in 1975, the construction of the dam stopped.

There are other reasons why John Doolittle's efforts to restart the program have been unsuccessful, but the in-process construction was stopped due to fear of failure in the event of an earthquake.
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#15 supermom

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Posted 23 January 2009 - 02:58 PM

ok--I get that there are fault lines all over ca.

However, I really thought that this part of N. Ca was a pretty stable section--meaning seismic activity --when active, is low key.

So, My comment was more toward, why they chose the construction of that type of bridge.

But, yeah---nice they wanna get the bridge opened by end of Mar.

Far as I'm concerned it could go without the lame "official openings" and just open.

Sure am tired of all the noise of the machinery.

On the other hand--I look at the deep gorge it was built over, and quite impressed.

one thing: anyone noticed in the "futuristic picture" that there is no guard rail or half wall, or fence- on the bike trail they are building?




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