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New 7th Street Bridge

Cultural District Bridges New Construction Infrastructure Transportation

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#101 Tacoma

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Posted 05 June 2013 - 11:05 AM

cberen1, I've been wondering the same thing.  Does anybody on the forum have access to this information?

 

As to the lights, one of the drawings I saw indicated that the arches would be lit but somebody asked a question at some event on this and no definite answer was given.



#102 mmiller2002

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Posted 05 June 2013 - 11:55 AM

I'll have to reserve final opinion to when its finished, but that is a massive looking bridge!  To my untrained eye, it looks too "thick."  I mean, its not like it's spanning a great body of water, canyon, or valley.

 

Its a cool piece of engineering, but looks out of place for now.  IMHO.



#103 Volare

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Posted 05 June 2013 - 12:00 PM

It is more delicate looking when you see it in person. I had a chance to see it from my car on the Henderson street bridge the other day looking southwest, and the arches looked great from a bit of distance.

 

In addition, there are several bulky reinforcement pieces that are still in place on the arches that will be removed as construction continues.



#104 cberen1

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Posted 10 June 2013 - 12:10 PM

So, no answer on how the bridge deck will attach to the arches?



#105 mmiller2002

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Posted 10 June 2013 - 01:07 PM

It is more delicate looking when you see it in person. I had a chance to see it from my car on the Henderson street bridge the other day looking southwest, and the arches looked great from a bit of distance.

 

In addition, there are several bulky reinforcement pieces that are still in place on the arches that will be removed as construction continues.

 

I just kinda like the simple look of the Lancaster bridge.  And, I can see things from the bridge while driving without all that structure in the way.



#106 John T Roberts

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Posted 10 June 2013 - 01:40 PM

I'm sorry that I didn't answer the question about the bridge deck. I stood beneath the bridge quite some time on both Saturday and Sunday. At the bottom of the arches are weld plates where brackets have been attached. It appears that the cross beams will hang from the arches. The deck will be poured on top of those beams.

#107 cberen1

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Posted 10 June 2013 - 02:17 PM

I'm sorry that I didn't answer the question about the bridge deck. I stood beneath the bridge quite some time on both Saturday and Sunday. At the bottom of the arches are weld plates where brackets have been attached. It appears that the cross beams will hang from the arches. The deck will be poured on top of those beams.

 

It's the dumbest thing in the world, but I just prefer things that stack rather than hang.  Does that make me crazy?  I used to weld some and I absolutely understand how strong that will probably be, but I just can't get over my preference for stacking versus hanging.

 

That said, I'm sure I'll drive over the bridge a thousand times and never think about it again.



#108 Doohickie

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Posted 10 June 2013 - 03:16 PM

I just prefer things that stack rather than hang.  Does that make me crazy?


No, it makes you a Civil Engineer. :P
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#109 cberen1

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Posted 10 June 2013 - 03:52 PM

 

I just prefer things that stack rather than hang.  Does that make me crazy?


No, it makes you a Civil Engineer. :P

 

 

Heh, heh, heh...   :)



#110 dangr.dave

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Posted 13 June 2013 - 10:01 PM

Here are five shots of the bridge that I took this morning.  You can see the new structure over the old structure and, as John pointed out, if you zoom in on my photos, you can see how they will "attach" the deck.

 

9039048162_206444fffe_z.jpg
7th Street Bridge Construction 1 of 5 by dangr.dave, on Flickr

 

9036825027_f12e8526c9_z.jpg
7th Street Bridge Construction 2 of 5 by dangr.dave, on Flickr

 

9036826153_d0631bba31_z.jpg
7th Street Bridge Construction 3 of 5 by dangr.dave, on Flickr

 

9036827257_e96a66c9b6_z.jpg
7th Street Bridge Construction 4 of 5 by dangr.dave, on Flickr

 

9039052746_f255ff2cde_z.jpg
7th Street Bridge Construction 5 of 5 by dangr.dave, on Flickr



#111 Volare

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Posted 14 June 2013 - 06:32 AM

I still can't figure out how they attach anything. I see the "nuts" where the tensioning cables come out the bottom of the arch, but that's it.

#112 Doohickie

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Posted 14 June 2013 - 07:53 AM

Maybe that's what they're attaching the deck to.


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#113 John T Roberts

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Posted 18 June 2013 - 07:09 PM

I noticed today that they have started removing the deck to the old bridge.  They are taking out the span across the current river channel.



#114 Volare

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Posted 23 June 2013 - 06:53 AM

I stopped directly under one of the bridge arches the other day while cycling and took this photo.

 

126627ab-2215-4e3a-8a06-1e1eadaf61fa.jpg

 

In addition to the bottom of the tensioning cables and their nuts, you can see some "slots" in the concrete which actually look like they are sleeved with metal. These might be involved with the attachment of the road deck. That's my latest guess anyway...



#115 Thurman52

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Posted 02 July 2013 - 06:51 PM

Traffic flow with forest park is very bad. The light at 7th and Penn is still to a five with priority of 7th. Making the detour traffics stack up. Plus the stop signs should be bagged during the detour. Very bad planning.

#116 dangr.dave

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Posted 02 July 2013 - 09:55 PM

This is what the bridge looks like as of today.  A lot of the old bridge is gone, leaving just the frame of the new bridge.

 

9198409844_64587f2306_z.jpg
When the bottom fell out by dangr.dave, on Flickr



#117 Doohickie

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Posted 03 July 2013 - 09:43 AM

Traffic flow with forest park is very bad. The light at 7th and Penn is still to a five with priority of 7th. Making the detour traffics stack up. Plus the stop signs should be bagged during the detour. Very bad planning.


Hopefully they will start from that end of the bridge as far as getting the decking in and then they can reopen Forest Park.
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#118 AndyN

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Posted 03 July 2013 - 10:17 AM

Not sure why my picture from the Chesapeake Building isn't showing. I will try it again.21348_10201464093030493_848787009_n.jpg


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#119 dangr.dave

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Posted 03 July 2013 - 09:34 PM

Good shot, Andy!



#120 Doohickie

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Posted 05 July 2013 - 10:54 AM

9217716130_14abf6625a.jpg
IMG_5115 by doohickie@ymail.com, on Flickr

 

From the top of the Cash America parking garage.


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#121 John T Roberts

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Posted 05 July 2013 - 12:56 PM

There goes the oldest part of the bridge!



#122 dangr.dave

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Posted 10 July 2013 - 08:54 PM

I wonder what they did with this?

 

9260030304_7988f9dc04_z.jpg
Viaducts by dangr.dave, on Flickr



#123 John T Roberts

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Posted 10 July 2013 - 09:31 PM

Hopefully, they saved it.  However, you couldn't put that on the new bridge, could you?



#124 Funkutown Retro Retro

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Posted 10 July 2013 - 09:46 PM

Trash it! Hoarders!

#125 cberen1

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Posted 11 July 2013 - 07:39 AM

The steel I-beams look temporary.  When the bridge is finished will there be any overhead clearance issues or will it be open on top?



#126 John T Roberts

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Posted 11 July 2013 - 10:10 AM

It will be open on top.  The current steel beams, which are temporary keep the arches braced and tied together.  The deck will act in the same capacity, once it has been placed.



#127 Nitixope

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Posted 11 July 2013 - 11:20 AM

Brenneke and Fay also designed the Paddock Viaduct. 



#128 John T Roberts

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Posted 13 July 2013 - 04:09 PM

I was on the bike trail today and we were detoured to Forest Park Blvd. on the east side and they are hanging the beams supporting the deck in the span across the river and to the west.  Unfortunately, I didn't get a real good look. 



#129 dangr.dave

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Posted 15 July 2013 - 09:03 PM

Here are some photos that I took this morning that show how they are putting the bridge together, since there have been a lot of questions swirling around about the issue.  The second photo probably gives you the best look at it.

 

9295165335_2f83eb2845_z.jpg
Bridges to nowhere by dangr.dave, on Flickr

 

9298021292_e98cab2f54_z.jpg
Ribbed for your pleasure by dangr.dave, on Flickr

 

9295362227_f3c08bd268_z.jpg
Bridging the gap by dangr.dave, on Flickr

 

9295446669_f192c1b1ca_z.jpg
It comes in waves by dangr.dave, on Flickr



#130 Austin55

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Posted 15 July 2013 - 09:10 PM

It really shows how nice the pedestrian sections will be to. 



#131 Volare

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Posted 15 July 2013 - 09:12 PM

Excellent photos!



#132 dangr.dave

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Posted 15 July 2013 - 09:13 PM

They must be using some pretty strong zip ties to hold that much weight.



#133 John T Roberts

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Posted 15 July 2013 - 09:45 PM

I was hoping that you would post those pictures.  It was a pretty yucky day to be out shooting yesterday.  I almost was going down there in a break in the rain, but I wound up having a late lunch with a friend at Benito's.



#134 PeopleAreStrange

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Posted 16 July 2013 - 12:16 AM

As cberen1 said earlier, it's odd getting over the fact that the deck will hang from the main structure, and even more so (at least for me) after seeing those pictures.


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#135 johnfwd

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Posted 16 July 2013 - 06:05 AM

Very attractive bridge, and I'm glad it's nearly finished so it can alleviate some of the congestion from traffic re-routed to Lancaster bridge and environs.  Oh, Dangr Dave, I hope someone preserves that historical plaque and puts it in one of our museums (Firestation No. 1?).   Heaven knows Fort Worth historians, of which I am not one, need such relics to aid in piecing together the past.



#136 John T Roberts

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Posted 16 July 2013 - 07:35 AM

There's a new article in the Star-Telegram about the construction and the length of closure.

 

http://www.star-tele...ait-end-of.html



#137 Volare

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Posted 16 July 2013 - 07:50 AM

The second photo in the Star-Telegram article confirms that it is those slots shown in my photo in post 114 that is being used to hang the deck from the arches.



#138 John T Roberts

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Posted 16 July 2013 - 08:08 AM

Volare, that's what I also thought when you posted your photograph.



#139 Doohickie

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Posted 16 July 2013 - 09:39 AM

The more I think about it, the less I like the weight of the deck being supported by point loads in tension.  It just doesn't seem right.  Civil Engineering should be based on gravity, not metallurgy.


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#140 Austin55

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Posted 16 July 2013 - 09:49 AM

Does this make you feel better or worse?

 

 

7TH-BRIDGE-01-700x393.jpg



#141 Volare

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Posted 16 July 2013 - 10:52 AM

Does this make you feel better or worse?

 

 

That's the engineering of the arch, not what is hanging beneath it. I'm with Doohickie on this, seems a little nuts to me. Good thing we don't salt the roads around here in the winter! I have a civil engineer friend that I'm having dinner with next week and this will be a topic of discussion for sure.



#142 Doohickie

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Posted 16 July 2013 - 11:31 AM

Hopefully little nuts are not what they use to hold it up.  :P


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#143 360texas

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Posted 16 July 2013 - 12:52 PM

Just a thought....  Its the reinforcing steel design that does all the support work.  The pre-cast concrete just holds the rebar in place.

 

Off topic:

As a construction managment group (on Google Earth map it is called 200 Villas), we built an 10 x 10  kilometer city from the gound up out of precast elements e.g.  floors, walls and ceilings.  It was like a gaint gigsaw puzzel. Took 4 years to design ( 4 US A&E contractors) and 5 - 6 years to build. 2 onsite precast plants, curing yards and a computer run concrete batch plant and a paver plant.

 

We had about 25 prime contractors, several hundred subcontractors and a 10,000 labor force man camp.   The design elements were a power plant, water collection system and water treatment plant, sewage treatment plant, all underground utilities,  all roads pavements and walkways included a 300 bed hospital, doctors and nurses quarters, family housing and schools, workers offices and command buildings, central mosque and airfield with hardend shelters and refueling systems,

 

For fun:  Google Earth use coordinates:   27° 58' 55.07" N   45° 32' 40.64"  East


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#144 Not Sure

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Posted 16 July 2013 - 02:11 PM

The more I think about it, the less I like the weight of the deck being supported by point loads in tension.  It just doesn't seem right.  Civil Engineering should be based on gravity, not metallurgy.

 

Isn't this the same concept that suspension bridges are based on? Apart from the Tacoma Narrows bridge, most of them have long service lives and good safety records.



#145 Doohickie

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Posted 16 July 2013 - 07:16 PM

1070003_10151561448838207_357525691_n.jp

 

This needs to happen to 7th Street.


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#146 Funkutown Retro Retro

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Posted 17 July 2013 - 09:02 AM

That is the coolest bridge ever!

#147 Tacoma

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Posted 29 July 2013 - 08:10 AM

It was too early and dark to take a photo when I went by on Sudnay morning, but my first impression from close up is that the bridge will have a great scale for the area.  The size of the outside sidewalk looks to be large enough that you want have to squeeze by people and the separation from the road will be nice.  Also, the arches look small from afar but are a good size when you get close which I think works well.

 

And they've started with the decking on the west side of the bridge. 



#148 renamerusk

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Posted 29 July 2013 - 03:28 PM

.... my first impression from close up is that the bridge will have a great scale for the area.... Also, the arches look small from afar but are a good size when you get close which I think works well.

 

Great points!



#149 Volare

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Posted 01 August 2013 - 08:22 AM

I was riding yesterday and took the following photos:

 

DSC00878.jpg

 

Detail of suspension rods:

 

DSC00879.jpg

 

Precast deck pieces shimmed with styrofoam:

 

DSC00880.jpg

 

Decking proceeding from the west to east, have almost reached the ditch:

 

DSC00881.jpg



#150 dangr.dave

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Posted 01 August 2013 - 09:02 PM

Great photos, Volare!







Also tagged with one or more of these keywords: Cultural District, Bridges, New Construction, Infrastructure, Transportation

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