Location: Route 3 and College Ave, Alton Reassurance shield after the 111 split. Location: Route 3 and Broadway, Alton As we head out of Alton, keep right to stay on Route 3. Location: Route 3 and Broadway, Alton Keep right for Broadway into downtown. Follow 3 to Granite City. Location: Route 3 and Broadway, East … Continue reading Illinois Route 3, IL-111/IL-140 to IL-143