The governor says crews will widen the interstate to three lanes in each direction from Merrillville south to "at least State Road 2 near Lowell."
INDOT won't make a final decision on the route until 2018.
The bill provides five years of funding, with more than $5 billion for Indiana.
INDOT will hold public hearings on section six throughout central Indiana this week.
One southern Indiana town is seeing benefits from the opening of the previous three sections of interstate.
Pence says the Democrats' proposal could bankrupt the state.
The House Democrats’ plan would divert sales tax revenues on gasoline and special fuels to road maintenance.
Several officials agreed maintaining existing transportation systems would be as important, if not more, than new additions.
The debate over how best to fund road and bridge improvements in Indiana is far from over.
Commissioner Brandye Hendrickson told lawmakers Thursday INDOT needs about $250 million more a year to maintain adequate road conditions.