Who held up Porter CR 100 South Improvements?

The questions and details are posed on 219.com by Bob Wichlinksi:

The improvement of CR 100 South in Porter County is not a zoning issue; it’s a public safety issue. The Harper administration appears willing to forsake the protection of life and property for partisan politics. This isn’t a landfill, the Illiana, South Shore rail, or the RDA. This is an entirely foreseeable tragic accident waiting to happen. Must human life be sacrificed to convince them? Must the taxpayers bear the cost of a resulting lawsuit?

My question is, who held up the project? Why wasn't County Road 100, which is also 109th coming out of Lake County and the new I-65 intersection, improved already?