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PostJul 11, 2025#726

It's great to see this out there more.  Wouldn't these two spots be low hanging fruit for caps?  I believe any further capping would require 44 to be buried more.  Short of rerouting it entirely, which seems less likely due to cost and available options.  I'd be happy to be wrong about that, though.
Arch Highway.png (1.68MiB)

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PostJul 11, 2025#727

J S wrote:
Jul 10, 2025
Glad we are not the only ones thinking about this: https://www.stlmag.com/news/highway-rem ... -st-louis/
That would be incredible

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PostJul 11, 2025#728

EssTeeEll wrote:
Jul 11, 2025
It's great to see this out there more.  Wouldn't these two spots be low hanging fruit for caps?  I believe any further capping would require 44 to be buried more.  Short of rerouting it entirely, which seems less likely due to cost and available options.  I'd be happy to be wrong about that, though.
Agreed - I think those sections at the least would be amazing... but it sure would be nice to see it capped from Wash Ave to Spruce. Really connecting the park to the city would just make for an incredible space... imagining Food Truck Friday "lunch edition" as a summer event along there would be so cool.

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PostJul 11, 2025#729

^  Isn't the current section about as wide as you can go without putting some form of (expensive) ventilation in place? Would it be more feasible to create additional caps or extend the current cap?

It would be interesting to see all the different options presented in some format with renderings.

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PostJul 11, 2025#730

^I would imagine just leaving some strategically placed openings would do the trick also? 

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PostJul 11, 2025#731

This study (https://files.thunderheadeng.com/femtc/2018_d2-04-jones-paper.pdf) discusses this topic in regards to capping depressed roadways and creating "short highway tunnels" which are classified between 400 and 1000 feet. From what I can tell it says that tunnels don't necessarily need to have mechanical ventilation systems if they under 3280 feet (which is about 3 times the distance an extended cap over I44 from Walnut St to Pine St would be). However depending on multiple factors they may be required to have egress stairs if engineers find natural ventilation would not be enough to expel smoke at a similar rate a mechanical system would. One of the simulations done in the paper is a 305m (1000ft) 6-lane tunnel and it found it would not pass, however if it had emergency staircases at a point(s) in the tunnel it likely would. Ultimately it seems like the existing cap is about as wide of a "bridge" it can be before its considered a short tunnel and they may be able to cap from Walnut to Pine without a costly ventilation system, but might need some emergency stairs.

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PostJul 11, 2025#732

While people tend to focus on expanding the cap, I'd argue that this is actually a bigger problem at this point...
Screenshot 2025-07-11 160434.png (1.7MiB)

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PostJul 11, 2025#733

This is what I think would have to happen. Illinois would rebuild the 64-70 interchange. Everything between Stan Span interchange and Eads is brought down to a surface level Boulevard. Then tunnel between Olive and Spruce. It would then sort out back on to 64/55.

Interstate traffic would cut into Illinois briefly but traffic could also continue through downtown if they didn’t mind some stoplights and traffic.


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PostDec 16, 2025#734


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PostDec 16, 2025#735

Thanks for posting DB.   

Maybe and hopefull for two cranes visible from Busch Stadium.  The second being 2CW rising when the old round tower nearby is coming down.

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PostDec 16, 2025#736

Kiener Plaza reboot? But they just built it... what are they doing to it? I don't see any publicly posted construction plans.

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PostDec 16, 2025#737

I think they're leveling the hilly part near the where the Christmas tree and Menorah are

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PostDec 16, 2025#738

SRQ2STL wrote:
Dec 16, 2025
Kiener Plaza reboot? But they just built it... what are they doing to it? I don't see any publicly posted construction plans.
Flattening the berm and pavers in the tables and chairs area where the maintenance building is at

After a few event organizers realized the berm wasn’t great idea. Next year the ice rink for winterfest will be moved to the grass area as well

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PostDec 16, 2025#739

dbInSouthCity wrote:
Dec 16, 2025
SRQ2STL wrote:
Dec 16, 2025
Kiener Plaza reboot? But they just built it... what are they doing to it? I don't see any publicly posted construction plans.
Flattening the berm and pavers in the tables and chairs area where the maintenance building is at

After a few event organizers realized the berm wasn’t great idea.  Next year the ice rink for winterfest will be moved to the grass area as well
Ah. Makes sense.

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PostDec 16, 2025#740

Awesome stuff.  Never did I think I'd see the day that MoDOT was cautiously optimistic about removing 44 through Downtown.

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PostDec 16, 2025#741

Any talk of a new bookend Stan span bridge taking I-55 and I-44 traffic across the river where Defense Mapping used to be? Could reduce traffic on Poplar and tie to the discussed 4-lane to Carbondale / I-24 to Nashville.


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PostDec 16, 2025#742

Glad to hear such a change in MoDOT's tune from 15 years ago.

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PostDec 16, 2025#743

I think this is much closer than people think

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PostDec 16, 2025#744

Put it all underground through downtown.  From Gravois to The Stan Span.  Some 3-5 miles.  Shorter than the big dig in Boston.

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PostDec 16, 2025#745

Highway removal >>> underground highway

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PostDec 16, 2025#746

Amen

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PostDec 17, 2025#747

Played with AI
IMG_4458.jpeg (741.52KiB)
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IMG_4459.jpeg (931.99KiB)

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PostDec 17, 2025#748

Would completely flip over downtowns future. If nothing else, tourism would spike immediately - much more attractive national park

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PostDec 17, 2025#749

TalkinDev wrote:
Jul 11, 2025
While people tend to focus on expanding the cap, I'd argue that this is actually a bigger problem at this point...Screenshot 2025-07-11 160434.png
absolutely agree with that assessment

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PostDec 17, 2025#750

Would it be the worst to just to add a south ramp off of MLK to I55 and reroute those southbound drivers into Illinois? Probably a 4-5 minute add to their trip? 
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