The upgrade has been fully complete for around 2 years now, and it is still marked with a “work zone” 55 mph speed limit. There is zero work occurring. It has a 70 mph design speed and is a rural 6 lane interstate highway (I-69) design.
This reminds me of the Mountain Parkway in southeastern Kentucky, which was originally made with a 4 lane 70 mph section and a 2 (plus truck climbing lanes) lane 55 mph section. Most of the 2 lane section has been expanded to 4 lane, seemingly with a 70 mph design speed. The speed limit is STILL 55 mph, and it's SERIOUSLY enforced. Absolute boon for speeding ticket revenue and following the legal speed limit feels like driving a farm tractor through molasses.
^ Instances like this are ridiculous IMO and should not be allowed, but anything for revenue…
The road was reconstructed to a 4 lane rural freeway with a 70 mph design speed, but the DOT for some reason refuses to post a proper speed limit. It’s been open for quite a few years now, at least towards the eastern end. I could see them wanting to wait until the entire road is widened, but it’s still annoying.
Actually, the new four-lane portions are signed for 70 mph now.
The speed limit was 70 mph on the original four-lane section (I-64 to Exit 43), then 65 mph on the four-lane portion between exits 43 and 46, then 55 mph on the "super-2" section.
The original thinking was not to raise the speed limit to 70 mph on the four-lane portions in order to keep from having a lot of changing speed zones, but that decision was changed, and now all the completed four-lane portions are signed for 70 mph.
I used to get complaints about the low speed limit, but recently I got an email from someone not happy with the 70 mph posting, and urging us to cut it back to 60 or 65 mph.
As for speed enforcement, I've never really noticed it, although cops are really enforcing the 45 mph work zone limit along the under-construction portion between exits 46 and 57. I tried to keep my speed between 60-62 on the two-lane section, and would routinely get passed anytime there was a passing lane or a straight stretch marked with a broken yellow line. It was rare that I saw a cop, or someone pulled over.
One thing that jumps out at me, though, is that for all the effort that's being put into getting the parkways in the western part of the state signed as interstates, no one seems interested in doing it for the Mountain Parkway.