I’ve never understood why they don’t just replace 37 with the Interstate instead of routing alongside. Yes they’d still need to have an access road, but I think it would be much less costly.
They are replacing and upgrading State Road 37 with I-69 SIU 3, Section 6 from a new interchange with I-465 down to Martinsville.
More here:
https://www.aaroads.com/forum/index.php?topic=4855.2650