Regional Boards > Northwest
Idaho
Bruce:
Anyone know what is going on with I-84 Business in Caldwell and Nampa? It's planned to be relinquished to the cities, but the board says they're waiting on AASHTO approval. But AASHTO isn't supposed to handle business Interstates.
Great Lakes Roads:
ITD will begin a series of projects to widen I-15 between Pocatello and Idaho Falls to three lanes. Starting in 2024, the segment between Northgate (Exit 73) and Fort Hall (Exit 80) interchanges will be under construction with all of the bridges to be replaced to accommodate a third lane within the median.
https://itdprojects.idaho.gov/pages/i15northgatetoblackfoot
Taters:
--- Quote from: Great Lakes Roads on November 08, 2023, 05:55:09 PM ---ITD will begin a series of projects to widen I-15 between Pocatello and Idaho Falls to three lanes. Starting in 2024, the segment between Northgate (Exit 73) and Fort Hall (Exit 80) interchanges will be under construction with all of the bridges to be replaced to accommodate a third lane within the median.
https://itdprojects.idaho.gov/pages/i15northgatetoblackfoot
--- End quote ---
Been hearing about this one for a while. Traffic counts seem relatively low but it seems like the area is growing enough that maybe counts will become much higher to justify this project in the coming years. My prediction is that it will probably be at least until 2035 that this project isn't fully complete but maybe I'm wrong.
JREwing78:
Curious to know how much seasonal fluctuations in traffic factor into it; being the primary route north to Yellowstone from SLC. Commercial AADT is also fairly high at 5000-6000 vehicles per day, which factors into any decision to widen.
Taters:
--- Quote from: JREwing78 on November 11, 2023, 08:59:24 PM ---Curious to know how much seasonal fluctuations in traffic factor into it; being the primary route north to Yellowstone from SLC. Commercial AADT is also fairly high at 5000-6000 vehicles per day, which factors into any decision to widen.
--- End quote ---
True. Not only is ITD working on this, they are also in the process of conducting multiple longer term studies/ environmental assessments on US-20 between Idaho Falls and West Yellowstone. I'll list a few of those here:
https://itdprojects.idaho.gov/pages/us20-chester-to-ashton-ea
https://itdprojects.idaho.gov/pages/south-saint-anthony-interchange
https://itdprojects.org/projects/us-20-ashton-to-sh-87-jct/
Most of these probably won't be in construction for years, but the seasonal factor is probably a little bit greater on US-20 (esp. north of Rexburg) compared to I-15 in the area.
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