Coming from:

Chicago

? Take I-88 W / Take I-80 E to I-280 W (Rock Island)
? Last exit before Mississippi River - Exit 11B (IL Route 92 E)

Des Moines

? Take I-80 E across Iowa to I-280 E (Rock Island)
? First exit after Mississippi River - Exit 11B (IL Route 92 E)

Indianapolis

? Take I-74 W across Indiana to Illinois
? Stay on I-74 W across Illinois
? From I-74 W, take I-280 W (Moline/Rock Island)
? From I-280 W, take exit 11B (IL Route 92 E)

Milwaukee

? Take I-90 S to I-39 S outside Rockford
? Take I-39 S to I-88 W
? Take I-88 W to I-80 E
? Take I-80 E to I-280 W (Rock Island)
? Last exit before Mississippi River - Exit 11B (IL Route 92 E)

Minneapolis

? Take I-35 S to I-80 E outside Des Moines
? Take I-80 E across Iowa to I-280 E (Rock Island)
? First exit after Mississippi River - exit 11B (IL Route 92 E)

St. Louis

? Take I-55 N to I-155N outside Lincoln
? Take I-155 N to I-74 W outside Peoria
? Take I-74 W to I-80 E to I-280 W (Rock Island)
? Last exit before Mississippi River - Exit 11B (IL Route 92 E)