INDOT is hosting three public meetings in mid-September to show new refinements to the Section 6 plan.
The Indiana Department of Transportation says around 44.2 million Americans are expected to travel for Independence Day.
The project covers a 14-mile section of I-65 between U.S. 50 in Seymour and Indiana 58 near Columbus.
The Indiana Department of Transportation is surveying wetlands, streams and other environmental features to further refine the I-69 expansion plan.
Indiana is ranked nearly worst in the nation for most rail crossing fatalities.
The first hearing is tonight at Perry Meridian High School on Indianapolis' south side.
The section is between U.S. 50 in Seymour and Indiana 58 near Columbus.
The Hoosier State Line runs from Indianapolis to Chicago.
INDOT says rain has prevented crews from fixing erosion issues along I-69.
INDOT will announce the remaining routes for I-69 later today in Martinsville.