Things should get easier well before August for those driving in from the East. One major construction project is finished, and the government has announced an "opening" (or reopening, I guess) of the newly redesigned areas by this weekend (April 28), weather permitting. 

Here's a map of the area:

https://northsplit.com/maps/

And some news links:

• Indianapolis Star newspaper, "
  North Split project hits milestone as traffic shifts onto new I-70 WB to I-65 NB"
  
• WTHR, Indy NBC news channel: "North Split interchange to reopen this weekend"
  
• WRTV, Indy ABC news channel: "INDOT plans to reopen Interstate 65 through North Split this weekend"
  

This won't affect everybody driving into Indy:

• If you're coming in from the east on I-70 (for example, from Ohio), then you'll run into this construction.
  
• If you're coming up from the south on I-65 (for example, if you're driving up from Louisville, Ky.), AND if you continue north beyond the I-70/I-65 South Split, then you'll either run into some other construction, or you'll eventually get to the North Split. 
  

Anyway, that should help some drivers coming in from points East and South. 

Additional links:

• Cool short YouTube vid with timelapse and before-after footage. Small segment of it shows an angle that'll help visualize this change a little bit. 
  
• Official State website for the project.