The section is between U.S. 50 in Seymour and Indiana 58 near Columbus.
The I-65 project between Greenwood and Franklin has caused delays since April 2015.
Report shows sharp increase in teen homicides; weather leads to vehicle pile-ups and the Hoosiers fall to Michigan State.
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."
The bridge closed Aug. 7 after sinking several inches.
After multiple crashes, including one that killed a woman on Tuesday, INDOT will install a traffic signal on the I-65 detour route on U.S. 52.
Upset after a fatal accident Tuesday, the Boone County Sheriff took to Facebook urging INDOT to install a stoplight at the intersection of U.S. 52 and S.R. 47.
A 50-mile stretch of I-65 that runs through Lafayette will remain closed until mid-September.
Hoosiers traveling to Lafayette or Chicago will have to take an alternate route as INDOT works to repair a bridge on I-65.
There are more than a dozen possible routes being considered for the last leg of I-69.