A large number of expressways are actually government or privately operated toll roads in many East Coast and Midwestern states. This link is to an article from the Federal Highway Administration that is great on the history of our highways. Here are links to State Department of Transportation web sites and State Tourism sites.

All highways are maintained by state governments, although they receive federal aid to build and maintain freeways signed as part of the 46,000 mile (75,000 km) nationwide Interstate highway network. Choose from among 18 sections of the state. Overdimension vehicle route maps 02 state highways Part 2 of the guideline which identifies routes in current use by overdimension vehicles and loads. The Washington State highway map includes more than highways. Find local businesses, view maps and get driving directions in Google Maps. To navigate through the Ribbon, use standard browser navigation keys. To jump to the first Ribbon tab use Ctrl+[. The Official Minnesota State Highway Map is produced every two years by the Minnesota Department of Transportation, the Minnesota Department of Administration (Minnesota’s Bookstore), and Explore Minnesota Tourism.To use the map for widespread distribution or printing, please contact Minnesota’s Bookstore at 651.297.3000. Highway History. If there are additional links you would like to see here, please e-mail the webmaster. It also shows exit numbers, mileage between exits, points of interest and more. State Departments of Transportation Explore Minnesota with the State Highway Map. To skip between groups, use Ctrl+LEFT or Ctrl+RIGHT. The routes have been identified by consultation with the road transport industry, and engineers and planners from territorial authorities.