The Illinois State Toll Highway Authority will spend $609 million on construction projects in 2012, the agency announced.

The projects will include projects repairs and rebuilding of roadways, bridges and interchanges as well as other capital investments across the 286-mile system, the authority said.

The 2012 projects are the beginning of a $12 billion, 15-year capital program the agency has dubbed "Move Illinois: The Illinois Tollway Driving the Future."

The largest projects listed in the 2012 package is $137 million for Tri-State Tollway (I-94/I-294) roadway resurfacing and ramp and bridge repairs, including work from 95th Street to Balmoral Avenue and from the Edens Spur to Half Day Road.