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sprjus4:

--- Quote from: architect77 on May 26, 2021, 01:43:42 PM ---But I-77 now stands out as a dire need. It's the 1st or 2nd most heavily used freeway in the state and Charlotte business leaders should try to come up with a way to fund it asap.
--- End quote ---
Specifically, where?


--- Quote from: architect77 on May 26, 2021, 01:43:42 PM ---I thought I had read that I-85 through Gaston county was going to be widened again to get a 4th lane in each direction.

--- End quote ---
https://www.ncdot.gov/projects/i-85-widening-gaston-county/Pages/default.aspx

Mileage Mike:

--- Quote from: sprjus4 on May 26, 2021, 01:51:48 PM ---
--- Quote from: architect77 on May 26, 2021, 01:43:42 PM ---But I-77 now stands out as a dire need. It's the 1st or 2nd most heavily used freeway in the state and Charlotte business leaders should try to come up with a way to fund it asap.
--- End quote ---
Specifically, where?


--- Quote from: architect77 on May 26, 2021, 01:43:42 PM ---I thought I had read that I-85 through Gaston county was going to be widened again to get a 4th lane in each direction.

--- End quote ---
https://www.ncdot.gov/projects/i-85-widening-gaston-county/Pages/default.aspx

--- End quote ---

The portion south of Uptown Charlotte to the SC Border. It's cramped, congested, and subpar for the amount of traffic it carries. It's actually busier than all the other parts of 77 in the region. NC likely hasn't widened yet because of the sheer cost to expand the freeway in that area. It will easily be the most expensive project ever undertaken by the NCDOT.

sprjus4:

--- Quote from: Mileage Mike on May 26, 2021, 03:23:58 PM ---
--- Quote from: sprjus4 on May 26, 2021, 01:51:48 PM ---
--- Quote from: architect77 on May 26, 2021, 01:43:42 PM ---But I-77 now stands out as a dire need. It's the 1st or 2nd most heavily used freeway in the state and Charlotte business leaders should try to come up with a way to fund it asap.
--- End quote ---
Specifically, where?


--- Quote from: architect77 on May 26, 2021, 01:43:42 PM ---I thought I had read that I-85 through Gaston county was going to be widened again to get a 4th lane in each direction.

--- End quote ---
https://www.ncdot.gov/projects/i-85-widening-gaston-county/Pages/default.aspx

--- End quote ---

The portion south of Uptown Charlotte to the SC Border. It's cramped, congested, and subpar for the amount of traffic it carries. It's actually busier than all the other parts of 77 in the region. NC likely hasn't widened yet because of the sheer cost to expand the freeway in that area. It will easily be the most expensive project ever undertaken by the NCDOT.

--- End quote ---
IIRC, weren't they planning something like 3 or 4 general purpose lanes alongside 1 or 2 HO/T lanes in each direction? IMO, a better and more appropriate location for HO/T lanes, unlike the current ones north of I-485.

cowboy_wilhelm:

--- Quote from: architect77 on May 26, 2021, 01:43:42 PM ---But I-77 now stands out as a dire need. It's the 1st or 2nd most heavily used freeway in the state and Charlotte business leaders should try to come up with a way to fund it asap.

--- End quote ---

Third if you want to go by the highest count per route from NCDOT's latest AADT data (2019), but we all know there's more to congestion than sheer numbers. I-77's numbers around and north of I-277 have been down the past several years, probably due to all of the HOT construction. I doubt there's enough data available yet (plus COVID) to know what affect those had on volumes.


* I-40 between Page Rd and I-540 (196,000)... and approximately 7 miles of I-40 between Durham and Raleigh with AADT exceeding 173,000
* I-85 between Graham St and Sugar Creek Rd (175,000, down from a max of 183,000 in 2017)
* I-77 between the South Carolina line and Westinghouse Blvd (161,000, max of 163,000 in 2017)
I could be totally wrong on the following estimates, but I-77 does have the greatest number of vehicles per lane in the state between exits 4 and 8 (151,000 AADT / 6 lanes = 25,167). I-85 between exits 22 and 26 is 139,000 AADT / 6 lanes = 23,167. Those estimates take into account auxiliary lanes between exits for the total lane count in other locations. For example, the 196,000 mentioned for I-40 has eight through lanes, an auxiliary lane each direction, and a lane from the I-540 on-ramp that ends after the Page Rd exit, totaling to 11 lanes (17,818 vehicles per lane per day). Even if you only counted through lanes, I think I-77 is still the winner, er, loser.

cowboy_wilhelm:

--- Quote from: Mileage Mike on May 26, 2021, 03:23:58 PM ---The portion south of Uptown Charlotte to the SC Border. It's cramped, congested, and subpar for the amount of traffic it carries. It's actually busier than all the other parts of 77 in the region. NC likely hasn't widened yet because of the sheer cost to expand the freeway in that area. It will easily be the most expensive project ever undertaken by the NCDOT.

--- End quote ---

I think an estimate at one time for this stretch of I-77 was approaching or exceeding $1 billion? The estimate for the I-26 connector in Asheville is currently that much, and will likely far exceed $1 billion by the time construction starts (delayed until 2024) and finishes.

Edit: To answer my own question, the STIP estimate for I-5718A (South Carolina to I-277) is $800 million and funded 2029/post-year, and another $250 million inside I-277 (I-5718B, unfunded).

I-5718 Project Breakdown Map

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