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Idaho Transportation Department outlines phased US‑91 widening; construction money earmarked for 2031
Summary
Idaho Transportation Department staff briefed Bannock County commissioners on the US‑91 Siphon Road to Reservation Road corridor: designers plan to widen several segments to five lanes, add sidewalks and preserve pavement where funding is insufficient to widen the entire route; a public meeting is set for March 6.
Idaho Transportation Department staff and their consultants presented a conceptual design and schedule Tuesday for the US‑91 Siphon Road to Reservation Road project, saying the work will include lane widening, curb, gutter and sidewalks and that construction funding is currently slated for 2031.
The presentation said the corridor work ties into a separate project to the south that narrows and then widens Yellowstone Avenue through Parkland; the ITD‑backed plan would add a traffic signal at the Siphon/Yellowstone intersection, widen the segment between Siphon and Tie E to five lanes and add sidewalks, and perform pavement rehabilitation from Tie E to…
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