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Started By
Message
re: Why Not Tunnels?
Posted on 7/24/18 at 11:43 am to Boudreaux35
Posted on 7/24/18 at 11:43 am to Boudreaux35
quote:
Where did you get your conversion for 1973/$50M to 2018/$293M?
LINK - limit is $10M so I just used that and multiplied by 5.
1
Posted on 7/24/18 at 11:45 am to TH03
quote:
I take it you've never been.
I’ve been to the DFW area many times.
Posted on 7/24/18 at 11:53 am to LSU Fan SLU Grad
quote:
Imagine another 2016 flood.....with tunnels
I thought about this. Obviously we have levees, so I assumed the water level gets higher than the tunnel entrance/exit would be. I also assumed (perhaps wrongly so) that the only way that would be an issue would be if there was a breach in the middle somewhere and water poured into the tunnel and out of the entrance(s)/exit(s). But... isn’t the Harvey canal built though or under levees? Also, couldn’t they build entrance/exit shutoffs or blockages to activate if this became an issue?
Posted on 7/24/18 at 11:59 am to Marineaux
Pie in the sky I know, but if the state wanted to open up BR for expansion they'd do what NY/NJ did with the Hudson and put in tunnels for autos and trains.
Run train lines in parallel with the 110 on the BR side from the airport to the LSU campus, and parallel to 10 out to the Lobdell exit in the west.
Run train lines in parallel with the 110 on the BR side from the airport to the LSU campus, and parallel to 10 out to the Lobdell exit in the west.
Posted on 7/24/18 at 12:00 pm to Parmen
If you think it’s a shithole, you might be retarded.
Posted on 7/24/18 at 12:03 pm to Marineaux
quote:
LINK - limit is $10M so I just used that and multiplied by 5.
That calculator is obviously not accurate for large heavy construction projects.
Example: US 190 Miss River Bridge cost ~$8M in 1940.
According to the calculator, it would cost $145M today. That's not even close.
Posted on 7/24/18 at 12:06 pm to LSU2001
quote:
The river channel around the new bridge is close to 100 feet deep. Can you imagine the engineering it would take to build a tunnel deep enough under the river to be safe and sustainable? The cost of that would be tremendous if it is even possible. I would imagine that the tunnel would have to be at least 150 ft deep as it goes under the main channel. But, I'm no engineer so I could very well be talking out my arse lol
No way you could get a stable grade to that depth and back up in a short enough distance. It would be undrivable
Posted on 7/24/18 at 12:09 pm to Marineaux
Why not utilize the new St. Francisville bridge, expand Louisiana State Hwy. 10 through Jackson, Clinton, Greensburg, north of Covington all the way to I-59?
Leave BR to the Broome and Gravy folks, leave AP and LP to the mosquitos and floods, move the productive population up to the beautiful rolling hills of the Felicianas.
Sure, it would take a while for the migration to happen. But if this were Texas, State Hwy. 10 would already look like an interstate. (Of course, if this were Texas, I-10 in BR wouldn't be the eternal clusterfrick that it is today.
Leave BR to the Broome and Gravy folks, leave AP and LP to the mosquitos and floods, move the productive population up to the beautiful rolling hills of the Felicianas.
Sure, it would take a while for the migration to happen. But if this were Texas, State Hwy. 10 would already look like an interstate. (Of course, if this were Texas, I-10 in BR wouldn't be the eternal clusterfrick that it is today.
Posted on 7/24/18 at 12:15 pm to Boudreaux35
Yeah this is the type of stuff I want to discuss becaus like I said, on the surface it seemed logical without more information than I had. There are just so many variables. Someone earlier suggested perhaps the price of labor was cheaper back then which I guess makes sense. I would have thought that we might have gone in the opposite direction on cost though with efficiencies over time. Like Elon Musks Boring company. The whole thing is about tunneling for less. I thought that if the purchasing power of the amount they spent on the GWT was about $294M today, perhaps it might be cheaper with new technologies and efficiencies.... or close to the same amount since it’s deeper and more challenging here vs there in Mobile. Regardless, a $900M cushion seems like a big buffer.
Posted on 7/24/18 at 12:17 pm to TH03
quote:
If you think it’s a shithole, you might be retarded.
Definitely a shithole with residents like you.
Posted on 7/24/18 at 12:21 pm to 50_Tiger
I lived in North Dallas and used that Spring Valley Tunnel in Richardson the Week it opened. 
Posted on 7/24/18 at 12:24 pm to AA77
It is being removed in most cities also. In almost every case these were built when costs were much cheaper and requirements were more lax.
Posted on 7/24/18 at 12:25 pm to Marineaux
I would research the topic of sea level and water table. You might also research the issues encountered in the Boston Big Dig as well as the price tag.
Posted on 7/24/18 at 12:26 pm to AA77
More likely won't happen because of the US Coast Guard and Corp of Engineers.
Posted on 7/24/18 at 12:27 pm to KG6
Houma
Hawvey
Belle chasse
Hawvey
Belle chasse
Posted on 7/24/18 at 12:28 pm to LSU Fan SLU Grad
quote:
Imagine another 2016 flood.....with tunnels
Forgets about Sandy?
NYC flood-proofed a shite load more miles of tunnel than we would need.
NYC tunnels 6 yrs after Sandy
This post was edited on 7/24/18 at 12:29 pm
Posted on 7/24/18 at 12:29 pm to fr33manator
quote:
No way you could get a stable grade to that depth and back up in a short enough distance. It would be undrivable
Any idea what the channel depth is in Addis? There’s a turn there where the river is 4,500 feet across, so 1.5 the length of where the current bridge is now and the length of the the GWT. Even at 100 feet deep, would that give enough room for the proper grading?
Posted on 7/24/18 at 12:32 pm to jbgleason
quote:
Pretty sure it’s because the ground / soil is unstable here.
Houma has one...but i would hate a tunnel to solve br traffic problems
Posted on 7/24/18 at 12:34 pm to mikelbr
quote:
Forgets about Sandy? NYC flood-proofed a shite load more miles of tunnel than we would need. NYC tunnels 6 yrs after Sandy
Yeah I didn’t know about this work but that’s what I had in mind. Like the article says, huge flood gates for the entrances/exits. I’m sure those monsters wouldn’t be cheap though.
Posted on 7/24/18 at 12:40 pm to Parmen
You don’t even know me. 
It’s fine if people don’t like Dallas, as people have different opinions. But to say it’s a shithole is just factually wrong.
If you think Dallas is a shithole, you have a strange definition of shithole.
It’s fine if people don’t like Dallas, as people have different opinions. But to say it’s a shithole is just factually wrong.
If you think Dallas is a shithole, you have a strange definition of shithole.
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