State, U.S., and interstate highways are valid routes except for restrictions listed on the bridge embargo, pavement restriction, road conditions (511ia.org), and vertical clearance maps.

Check with local officials when traveling on county roads or city streets for bridge embargo, detour, road embargo and vertical clearance information.

Zoom in to the map to see restricted route details for each city and county.

Remote Media URL

View larger map.

Map Key

County/City Routes Key
County Route Restrictions
All restrictedSome restrictionsNo restrictions
Red trapezoid
Gray trapezoid
White trapezoid
County/City Routes Key
County/City Routes
Restricted routesNo restrictionsCheck with local contact - not reported
Red line
Green line
Yellow line