U.S. Route 148 is a short highway located in the state of Illinois. It runs for approximately 12 miles, connecting the towns of Cairo and Mound City. This route primarily serves local traffic and provides access to various communities and attractions in the region. The highway is part of the larger U.S. highway system, which includes many routes across the United States. U.S. Route 148 is significant for its role in facilitating transportation and commerce in southern Illinois, contributing to the area's economy and connectivity.