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Old August 26th, 2015, 07:24 AM   #10761
siamu maharaj
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Quote:
Originally Posted by Innsertnamehere View Post
Lol the dvp from downtown to the 401 takes more than 14 minutes at 5pm on a weekday. 24 minutes, maybe.
I am talking about the sign to 401. I make it a point to check the time every day.
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Old August 27th, 2015, 04:32 PM   #10762
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Old August 27th, 2015, 04:41 PM   #10763
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Old August 27th, 2015, 06:39 PM   #10764
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Not your typical Idaho freeway.... I-84 in Boise with 7 lanes.

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Old August 28th, 2015, 10:24 PM   #10765
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Interstate 635, Dallas, TX

The reconstructed I-635 through Dallas.

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Old August 30th, 2015, 04:10 AM   #10766
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Old August 31st, 2015, 08:12 PM   #10767
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Reconstruction of the I-35 / I-435 interchange in Lenexa, Kansas.

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Old September 1st, 2015, 05:43 AM   #10768
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I think I-635 may have surpassed the 401 as the most epic highway on the planet..
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Old September 1st, 2015, 06:05 AM   #10769
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there are collector lanes on the collector lanes !
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Old September 1st, 2015, 06:24 AM   #10770
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Are there any other highways in the US with lower-level express lanes? I'm guessing this model will be used more in the future.
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Old September 1st, 2015, 07:12 AM   #10771
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Quote:
Originally Posted by Xusein View Post
Are there any other highways in the US with lower-level express lanes? I'm guessing this model will be used more in the future.
I'm not sure if there are, but I do know Atlanta is considering using the same design to expand the Downtown Connector (I-75/I-85 concurrency) and also Houston is considering it for the I-45 rebuild/widening project.

I'm not sure it's something that will really take off though, it's a very expensive way to do things and could only ever get done in a state like Texas which doesn't have the same sort of union laws that exist up North. If they tried a similar project on the New Jersey Turnpike (for instance) it would run into a 10+ Billion dollar price tag. Just look at the far less ambitious highway projects such as I-84 in Connecticut.
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Old September 1st, 2015, 08:11 AM   #10772
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Probably not in the Northeast. But to be fair, even most conventional projects are difficult there.

It's a pretty interesting workaround to deal with less ROW space though. More efficient than taking more horizontal space. I-635 looks well done.
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Old September 1st, 2015, 09:20 AM   #10773
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I-635 is an example of future highway expansion in the US. I would expect to see more of this type of construction in major US cities over time (especially the sprawled car dependent ones). Dallas has an amazing highway network.
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Old September 1st, 2015, 03:27 PM   #10774
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I took a look on Google Earth historical imagery, and it appears that the LBJ Express project was done without any substantial right-of-way expansion. They expanded the freeway main lanes from 10 to 14, mostly within the existing right-of-way.

It's amazing how they completed this technically challenging project on budget and ahead of schedule. Many people were sceptic about it. They basically did the entire reconstruction in 3.5 years.
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Old September 1st, 2015, 05:33 PM   #10775
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Quote:
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Are there any other highways in the US with lower-level express lanes? I'm guessing this model will be used more in the future.
Why not raised? It seems like that'd be cheaper.
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Old September 1st, 2015, 06:07 PM   #10776
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Are there any other highways in the US with lower-level express lanes? I'm guessing this model will be used more in the future.
The I-5 reversible express lanes in Seattle run under the lanes in some areas, including the Ship Canal Bridge and between Mercer and the Convention Center lid. The I-90 express lanes run at a much lower level from I-5 to Rainier Avenue.
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Old September 1st, 2015, 11:09 PM   #10777
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Quote:
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Why not raised? It seems like that'd be cheaper.
Raised freeways are pretty strongly frowned upon these days for dividing the urban fabric and destroying the aesthetics of a city.
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Old September 2nd, 2015, 03:47 AM   #10778
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Quote:
Originally Posted by siamu maharaj View Post
Why not raised? It seems like that'd be cheaper.
The thing is, the original plan was to bore two tunnels for the Texpress lanes but that was ultimately deemed much more expensive.. This was always intended to somehow be buried. Like the southern half of Central Expressway, LBJ has a ton of expensive homes right next to the freeway behind retaining walls. No way would they ever have it raised in such areas. It was hard enough to please the residents during construction. Imagine if it was raised in those areas(mostly west of the Dallas North Tollway)
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Old September 2nd, 2015, 06:35 AM   #10779
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The I-5 reversible express lanes in Seattle run under the lanes in some areas, including the Ship Canal Bridge and between Mercer and the Convention Center lid. The I-90 express lanes run at a much lower level from I-5 to Rainier Avenue.
LOL, I can't believe I forgot those. Likely one of the first ones doing that concept too.

It would be something if the concept was extended southwards on I-5 south of downtown but I don't think that will ever happen.

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Old September 2nd, 2015, 07:28 AM   #10780
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LOL, I can't believe I forgot those. Likely one of the first ones doing that concept too.

It would be something if the concept was extended southwards on I-5 south of downtown but I don't think that will ever happen.
It's not really all that necessary to extend it south. You'd run into a conflict at the west portal of the Beacon Hill light rail tunnel (around S Forest Street) with a lower level.

It's a shame that Seattle never converted the express lanes into all-day bi-directional busways, which would be well used today. At least the I-90 express lanes will be converted to light rail by 2023.
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