Indiana Finance Authority and Indiana Department of Transportation (InDOT) have shortlisted four development teams to finance, construct, operate and maintain a 12-mile portion of Illiana Expressway, a planned 47-mile corridor linking major Illinois and Indiana arteries.

Awaiting federal approval, the $1.5-billion Illiana would connect I-65 in northwest Indiana to I-55 in northeast Illinois, about 58-miles south of Chicago, relieving truck congestion on I-80, an east-west corridor in closer proximity to the city.

State transportation officials expect Illiana to generate $2.4 billion to $3.8 billion over the life of the development contract they've proposed, with developers recouping their investments from tolls the highway accrues.

The project currently is undergoing federal environmental review.

The four finalists include:

Illiana Corridor Transportation Group

Equity Members: ACS Infrastructure Development, Inc. and Fengate Capital Management; Lead Contractor: A joint venture of Dragados USA Inc., F.H. Paschen, S.N. Nielsen & Associates and William Charles Construction Co.; Lead Engineer: Jacobs Engineering Group Inc.

Illiana East Mobility Partners

Equity Member: Cintra Infraestructuras;  Lead Contractors: A joint venture of Ferrovial Agroman US Corp. and White Construction, Inc.; Engineer: Janssen & Spaans Engineering Inc.

Isolux Infrastructure Netherlands B.V.