Our Purpose

The Four County Highway Coalition aims to build a four-lane rural expressway through Monroe, Randolph, Perry, and Jackson counties in Southwestern Illinois.

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In 1976, the Illinois Supplemental Freeway System and State Highway Needs Study identified the necessity of a four-lane rural expressway in Southwest Illinois. Since then, the economic landscape changed, highlighting the need for a reliable transportation route in Southwest Illinois.


In 2017, the Four County Highway Coalition, businesses, communities, and local government renewed interest. It expanded support for constructing a rural expressway to provide a safe, reliable highway to capitalize on the existing multimodal transportation assets: rivers, railways, airports, and transit.

The Coalition's efforts became the Southwest Illinois Connector through Senate Joint Resolution No. 54, passed in 2018, and established the Southwest Illinois Connector (SIC) Task Force.


The Four County Highway Coalition supports the Southwest Illinois Connector Focus Study area for a four-lane rural expressway through Monroe, Randolph, Perry, and Jackson counties to the St. Louis Metropolitan Area.

A barge moving goods to market on the Mississippi River near the Kaskaskia River confluence.

A barge is moving goods to market on the Mississippi River near the Kaskaskia River confluence.

Focus Study Area Maps

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Previous Focus Study Areas

Previous Focus Study Areas
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