The $155 million project eliminates more than a dozen stoplights for those going through Kokomo — and other projects on U.S. 31 are still to come.
The agreement includes monthly payments from INDOT and communities along the route to keep the existing service for one year.
There's still a question about who will foot the bill for the Hoosier State Rail service.
The state is reviewing its options for keeping the Amtrak line from Chicago to Indianapolis running after federal funding runs out October 1.
A man was hit and killed last month after he tried to cross SR 37 near Martinsville High School.
Small towns along the Amtrak route are hoping the state will make up the shortfall, something that doesn't appear likely right now.
Some property owners say Interstate 69 construction has damaged their springs and the water is no longer drinkable.
Frequent rains have caused some runoff from I-69 construction, but INDOT officials say they have taken all necessary precautions.
Karl Browning previously served as INDOT Commissioner from 2006 to 2009 under former Governor Mitch Daniels.
The Indiana and Illinois Departments of Transportation are seeking input from private companies.