Tennessee

[Plutonic Panda]

There is so much land around that city, they need to build an inner bell in between the 840 and downtown, complete the north side of 840, and start planning right away for another outer belt. I mean what the fuck is wrong with these people they just see all these people moving in and they're just like OK and then they shrug their shoulders and then act surprised when there's traffic congestion and then tell people oh we can't build more freeways, cause we don't have land. Fuck off with that bullshit. Eminent domain. Use it.

[The Ghostbuster]

The northern half of 840 has been dead since 2003, and is very unlikely to ever be revived. As for building an outer beltway, where would you put it? The Nashville area will likely have to make do with upgrading and expanding the existing freeways.

[triplemultiplex]

Does the average person taking I-40 from Memphis to Knoxville actually save time taking I-840?

The savings is in mental energy.
Let's see, 10 minutes longer but I probably won't even have to tap the cruise off?  Or deal with all the weaving maniacs while punching the core of Nashville?

I'll take the former every time.
Plus, there's some bitchin' rock cuts on 840. 

[Rothman]

There is so much land around that city, they need to build an inner bell in between the 840 and downtown,

Wut.

[elsmere241]

Does the average person taking I-40 from Memphis to Knoxville actually save time taking I-840?

The savings is in mental energy.
Let's see, 10 minutes longer but I probably won't even have to tap the cruise off?  Or deal with all the weaving maniacs while punching the core of Nashville?

When my wife and I were on our 2018 road trip, one day we went from Frisco, TX (where her cousin lived) to Brentwood, TN (where my cousin lived).  We passed Jackson around 8 PM and I called my cousin from there to help with an ETA.

Instead of going all the way in (I-440 wouldn't have made much of a difference) I took I-840 east to I-65 north.  When we pulled in, my cousin was surprised we'd made it from Jackson so quickly.

All I know is that it was a much calmer route; I don't know if it was actually shorter.

[akt85]

If the freeways in downtown Nashville do get reconstructed, my guess is TNDOT will require long distance truckers taking I-40 to use I-840 if they are not making deliveries in Nashville proper.

[ElishaGOtis]

There is so much land around that city, they need to build an inner bell in between the 840 and downtown,

Wut.

Briley Pkwy / TN-155 has entered the chat

[Tomahawkin]

OT? How long did it take for the Briley/IH 40 Interchange west of Nashvegas take to build? I Thought it seemed to take 3+ years???

[Plutonic Panda]

If the freeways in downtown Nashville do get reconstructed, my guess is TNDOT will require long distance truckers taking I-40 to use I-840 if they are not making deliveries in Nashville proper.

What is the road quality of I-840?

[hbelkins]

If the freeways in downtown Nashville do get reconstructed, my guess is TNDOT will require long distance truckers taking I-40 to use I-840 if they are not making deliveries in Nashville proper.

What is the road quality of I-840?

Alignment is great. I haven't been on it for several years, so I don't know about pavement quality or if the bridge ends have settled.

[I-39]

Will expanding Interstate 65 to six lanes be enough for this stretch (US 412-to-Interstate 840)?

AADT Volumes for I-65

Location
June Lake Blvd to I-840      85,915
TN 396 to June Lake Blvd    75,445
US 412 to TN 396                47,861

Growth figures are inconclusive as the counter between 840 and 396 has only been active since the completion of the June Lake Blvd interchange, and shows a 10k drop from 2024 and 2025. As of right now, 6-lanes will suffice for these volumes, and as long as June Lake to 840 isn't expected to exceed 100k any time soon I don't foresee any issues. With that said, given Nashville's growth rate I wouldn't be surprised if said growth occurs.

Remember though, the June Lake development has hardly been built out. That is going to be a gateway district into Spring Hill and will feature residential, office, retail, restaurants, entertainment, etc. Some of that could have a regional draw depending on what goes in.

There is also the east side of I-65 just south of the June Lake interchange, which I've heard has significant interest as well.

I would extend the eight lane section down to June Lake Blvd, or at least construct auxiliary lanes between I-840 and June Lake Blvd.

I think that the stretch between June Lake and 840 is a great candidate for what 65 will look like in Goodlettsville where there will be an auxiliary lane between Exits 97-98. The distance between the start/end points of the auxiliary lanes there is 1.5 miles, whereas between 840 and June Lake it's 1.75 miles. With the amount of 840 to June Lake traffic that is likely, the reduced merging should reduce congestion even further. After that, the 6-lane will go to TN 396, and maybe in the near future to US 412. Nothing in the 72 miles from  US 412 to I-565 should need to be widened for at least 30-50 years.

Little late, but it looks like they are doing exactly that. Auxiliary lanes between I-840 and June Lake Blvd

https://www.tn.gov/tdot/projects/region-3/interstate-65-widening-near-june-lake.html

[Georgia]

If the freeways in downtown Nashville do get reconstructed, my guess is TNDOT will require long distance truckers taking I-40 to use I-840 if they are not making deliveries in Nashville proper.

What is the road quality of I-840?

road quality is fine having driven full length each way in the last few years.