Megabus.com - Daily bus service between Chicago, Milwaukee, Minneapolis, St. Louis, Cincinnati, Columbus, Cleveland, and Detroit. Includes routes, schedules and online reservations. - http://www.megabus.com/us/
Little Red Bus / Solid Gold Transportation - Provider of ground transportation services, including limousines, long distance and shuttle bus services within the Southeastern Wisconsin and Northern Illinois region (Milwaukee to Chicago corridor). - http://www.littleredbus.com/
The New Mississippi River Bridge - Cooperative projects of the Missouri and Illinois Departments of Transportation to improve traffic-flow in St. Louis, Missouri and Southwestern Illinois. - http://www.newriverbridge.org/