Interstate 39 South - Rockford

Just south from the separation with I-90 (Jane Addams Memorial Tollway), I-39/U.S. 51 combine with U.S. 20 west at a cloverleaf interchange (Exits 122 A/B) with Harrison Avenue.

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U.S. 20 leads east from Exit 122 B through the village of Cherry Valley to Edgewood and the city of Belvidere.

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U.S. 20 bypasses Rockford along an older freeway leading seven miles west to Chicago Rockford International Airport (RFD) and 15 miles to U.S. 20 Business ahead of the village of Winnebago.

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I-39/U.S. 51 turn south again in one mile at an unnumbered wye interchange.

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A third westbound lane opens along U.S. 20 beyond the CN Railroad underpass for the departing I-39/U.S. 51 south to Bloomington and Normal.

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I-39/U.S. 51 transition to a rural freeway south from Rockford and Cherry Valley as U.S. 20 remains west toward Downtown and RFD Airport. U.S. 20 joins Rockford with Freeport and Dubuque, Iowa.

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