Location: Piasa St and Broadway, Alton No reassurance shield after the Route 100 junction. Location: US-67 and 9th St, Alton Reassurance shield as we head out of downtown. Location: US-67 and College Ave, Alton Reassurance shield after College Avenue. 67 passes mostly through forest preserve within Alton, which is otherwise pretty suburban. Location: US-67 and … Continue reading U.S. Route 67, IL-100 to IL-111