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Started By
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re: Did DOTD consider a Diverging Diamond Intersection for I10/Highland?
Posted on 8/8/17 at 10:21 am to Jackie Chan
Posted on 8/8/17 at 10:21 am to Jackie Chan
quote:
I'd love to see the madness that would ensue if a double roundabout was implemented.
You already have a triple roundabout in Hammond.
1
Posted on 8/8/17 at 10:21 am to lowhound
quote:
What happens when the power goes out? You've never seen a cluster frick so bad when all those lights start flashing and both directions of traffic use one side of the highway.
I hate those fricking interchanges.
They give me anxiety.Posted on 8/8/17 at 10:22 am to c on z
quote:
You already have a triple roundabout in Hammond.
Bruh. I avoid getting off at that clusterfrick at all costs.
Posted on 8/8/17 at 10:24 am to Tigeralum2008
quote:
Did DOTD consider a Diverging Diamond Intersection
quote:
Maybe even College Dr?
How efficient is the DDI with cars blocking the intersections every light cycle?
Posted on 8/8/17 at 10:24 am to AnonymousTiger
quote:
What am I missing here with this one? Looks like a fairly normal interstate off/on ramp design
Posted on 8/8/17 at 10:25 am to AnonymousTiger
quote:
This is one of the most efficient interchange designs
10 needs to be 4 god danged lanes each direction from Lafayette to Nola. Add service roads for urban areas.
Build us a frickin new bridge.
Problems solved. Well except for who's got eleventy billion $ to pay for that?
Posted on 8/8/17 at 10:26 am to SPEEDY
You only sit through 1 red light no matter where you enter the interchange from. Traditional interchanges have red lights on either side of the interstate, making people have to sit through 2 lights to get on/off the interstate.
Posted on 8/8/17 at 10:27 am to mikelbr
quote:
10 needs to be 4 god danged lanes each direction from Lafayette to Nola. Add service roads for urban areas.
Build us a frickin new bridge.
Closing the Washington Street exit would help a lot in the interim
Posted on 8/8/17 at 10:28 am to Tigeralum2008
Would take them 10 years to build and 100 million over budget
Posted on 8/8/17 at 10:28 am to Tigeralum2008
Love these. It did wonders for the Ashford Dunwoody 285 intersection in Atlanta. Here's a visualization of it before they built it. LINK
They should only hire engineers that have worked in other large cities. There's a severe lack of new and innovative techniques in Louisiana.
They should only hire engineers that have worked in other large cities. There's a severe lack of new and innovative techniques in Louisiana.
Posted on 8/8/17 at 10:29 am to SPEEDY
quote:
Closing the Washington Street exit would help a lot in the interim
It needs to be destroyed and an elevated merge lane put in the existing footprint. Simply closing it doesn't do much.
Posted on 8/8/17 at 10:30 am to Jackie Chan
I think that will work great for the airline/I12 intersection.
Posted on 8/8/17 at 10:31 am to SECretariat
quote:
They should only hire engineers that have worked in other large cities. There's a severe lack of new and innovative techniques in Louisiana.
FWIW, Biloxi, MS has one of these DD intersections.
Posted on 8/8/17 at 10:33 am to upgrayedd
At the least, it needs to be moved to the inside lane in that same area, but to where no vehicle exiting the bridge can use that ramp. The choke point of cars crisscrossing there only worsens the traffic problem
Posted on 8/8/17 at 10:34 am to c on z
There is one on 270 in Maryland Heights here in the STL metro area. It's town that has a bunch of corporate HQ buildings where people have to drive from all over the metro area to one interstate exit. They put the DD interchange in sometime in 2010ish. It keeps traffic moving pretty smoothly in all directions.
Posted on 8/8/17 at 10:35 am to c on z
The Madison, MS Exit (just above Jackson) off I-55:
Posted on 8/8/17 at 10:35 am to SPEEDY
quote:
Closing the Washington Street exit would help a lot in the interim
Posted on 8/8/17 at 10:37 am to SPEEDY
quote:
At the least, it needs to be moved to the inside lane in that same area, but to where no vehicle exiting the bridge can use that ramp. The choke point of cars crisscrossing there only worsens the traffic problem
True. The fact that you have cars that are allowed to cross the ONLY lane of I-10 to use an exit where they only have about 800 ft to make the exit is so absurd that it only makes sense in this stupid arse city.
Posted on 8/8/17 at 10:38 am to link
quote:
link
quote:
wasn't the walker exit on I-12 going to be a double roundabout?
Wasn't. It is and it will be. They've already completed most of the construction for the roundabout that will handle Eastbound I-12 traffic to one side of the two-lane overpass for 447.
The roundabout that will handle Westbound traffic is well underway but it's behind the Eastbound circle.
The last phase-once all of the roundabouts are done-will be to add two additional lanes between the circles over the I-12 overpass for Highway 447, which will ensure it (Hwy 447/Walker North/Walker South)is 4 lanes from the Eastbound exit/entrance ramp all the way past Florida Boulevard.
The talk is that Juban and Florida will be the next to be Roundabouted and that there may be one more installed between the Pendarvis/447 intersection and Stine's in Walker. Which-when its all done in somewhere around 3-5 years-will really and truly improve traffic between Denham & Walker in a major way. Once Denham is able to connect Tate Road to the back of Juban Crossing it'll actually get even better in that you're providing a 4th artery that runs from Juban to Denham that isn't I-12:
Florida Blvd/190 (From Juban to Denham)
Tate Road (within Juban Crossing) to Pete's Hwy (in Denham)
Wax Road (From Juban to Hwy 16/Pete's Highway)
Juban Road to Highway 16
Posted on 8/8/17 at 10:40 am to Tigeralum2008
quote:
It's pretty crazy but there seems to be a lot of positive benefits to that type of intersection.
The main benefit is that there are no signalized left turns. Left turns hurt efficiency more than anything else so eliminating them improves efficiency a lot. They built one here at the Fillmore & I-25 interchange and it's working pretty well. If they are well designed, you don't even realize that you're driving on the wrong side of the road until you're on the other side.
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