Regional Boards > Central States
Iowa Interstate 880
ethanhopkin14:
I have never been to Iowa or the Omaha area but was perusing the googs and saw the former I-680 was renumbered I-880 to avoid driver confusion. Now, I am a bit ignorant to things, but I don't really understand how that keeps down confusion when you are detoured off I-29 to use I-880 and I-80 as your way to Council Bluffs. I figured having it numbered I-680 does the exact same thing. Can someone explain this to me?
I feel like a lot of times states renumber (or truncate) designations for "driver confusion", I have a hard time understanding the logic.
Bobby5280:
I saw no issue with the previous configuration where they overlapped I-680 onto I-29. If anything, I think adding an additional I-880 route number into that combo would do more to confuse thru traffic taking I-680 to avoid downtown Omaha. Previously I-680 ran along the entire length of that bypass route. Now there are 3 different numbered Interstates to take to do essentially the same thing.
At least this "I-880" route has a couple exits along it and has some significant length. It's not like I-865 in Indianapolis; that one has no exits. It really only functions as a couple exit ramps between I-465 & I-74. "I-270 Spur" in the DC metro appears more worthy of having its own Interstate number, yet it's signed as some kind of lesser route.
triplemultiplex:
Resigning was cheaper than raising the grade of 680 so it doesn't flood out.
Apparently, Iowa plans on 680 getting flooded so often in the future that it doesn't pay for it to be a continuous route all the way back to I-80?
That's my interpretation of how the change went down.
ethanhopkin14:
--- Quote from: triplemultiplex on January 18, 2023, 03:14:25 PM ---Resigning was cheaper than raising the grade of 680 so it doesn't flood out.
Apparently, Iowa plans on 680 getting flooded so often in the future that it doesn't pay for it to be a continuous route all the way back to I-80?
That's my interpretation of how the change went down.
--- End quote ---
That doesn't make a whole lot of sense to me. I thought it was I-29 that flooded (south of the 680 split) because it hugged the Missouri River. The rest of 680 would be irrelevant for this exercise. Am I understanding wrong?
triplemultiplex:
Pretty sure it was 680 that was underwater on the Iowa side of the river...
Looking it up, it looks like we're both right.
680 was completely swamped from the 29 south interchange west to almost the bridge.
And portions of 29 were under water both directions from the 680 west interchange.
680 got it worse with water flowing over the highway and completely destroying the pavement.
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