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AASHTO Route Numbering Database Documents
Rover_0:
--- Quote from: CNGL-Leudimin on September 13, 2021, 02:44:54 PM ---US 84 to Oregon would have prevented I-80N from being renumbered to I-84 :sombrero:. And the Interstates were already under construction by the time of that letter (1959).
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Ha!
If I were a betting man, I'd say that I-80N would've become I-82 and I-82 something else--maybe I-86 (as this was during the time of the suffixed Interstates)?
US-84 to Oregon is definitely one of the more out-there proposals. Crescent Junction was mentioned in those documents, so I can't help but try to connect the dots for US-84 between there and Bliss; it'd probably go something like this:
US-6 Overlap to Spanish Fork
US-91 Overlap to Brigham City
US-30S Overlap to US-30N/30S split
US-30 Overlap to Bliss
The timing may have worked out as well, given that 91 and 30S were on their way out within 15-20 years, with US-84 possibly supplanting 91 to Brigham City and 30S back to 30 once Interstates 15 and 80N were being built. Of course, US-84 would've been overlapping 80N once it was completed.
Also another tidbit: IIRC part of former US-91, after it was decommissioned south of Brigham City in 1974 and before Utah's 1977 renumbering, was numbered UT-84. (Correct me if I'm wrong, though.)
US 89:
--- Quote from: Rover_0 on September 14, 2021, 12:06:51 AM ---Also another tidbit: IIRC part of former US-91, after it was decommissioned south of Brigham City in 1974 and before Utah's 1977 renumbering, was numbered UT-84. (Correct me if I'm wrong, though.)
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Yep - specifically the part of old 91 between I-15/Main St in Layton and 1900 West/Riverdale Rd in Roy was part of SR 84. That was renumbered to SR 126 in 1977.
Had I-80N been renumbered to I-84 just a few years earlier, the two 84s would have intersected at Hot Springs Jct.
Bruce:
--- Quote from: Rover_0 on September 14, 2021, 12:06:51 AM ---If I were a betting man, I'd say that I-80N would've become I-82 and I-82 something else--maybe I-86 (as this was during the time of the suffixed Interstates)?
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Until 1958, I-82 in fact was assigned to the Portland-SLC corridor (source), while I-82N was assigned to what is now I-86.
US20IL64:
Is cool :) to see scans of old documents and explanations with approvals, etc. As someone posted "like Christmas". :popcorn:
I-90 re-routing in Chicago made sense, to make more direct. And remove superfluous route numbers, like IL-194.
AcE_Wolf_287:
--- Quote from: cl94 on September 22, 2020, 11:25:23 PM ---Merry Christmas, everyone!
I found an early NY 3DI numbering plan. This has some stuff we never knew existed.
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Very Interesting that I-87 was planned to end at a 2di instead of its current 3di, i've always made ideas to make I-87 end at a 2di
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