As I-39 crosses into Winnebago County, the Baxter Road exit (exit 115) is the final exit before I-39 joins the US 20 freeway bypass in Rockford. Approximately a mile east of the Alpine Road/US 20 interchange, I-39 joins US 20, moving from nearly entirely farmland to medium-density populated areas.
As I-39 crosses into Winnebago County the Baxter Road exit (exit 115) is the final exit before I-39 joins the US 20 freeway bypass in Rockford. Approximately a mile east of the Alpine Road/US 20 interchange, I-39 joins US 20 moving from nearly entirely farmland to medium-density populated areas.