Displays counties where no county roads are restricted. Street-level restriction map can be found here: http://www.iowadot.gov/mvd/motorcarriers/systemmap.htm#county.Check with local officials when traveling on county roads or city streets for bridge embargo, detour, road embargo and vertical clearance information. State and interstate highways are valid routes except for restrictions listed on the bridge embargo, detour and road embargo, and vertical clearance maps located at http://www.iowadot.gov/mvd/motorcarriers/omcsMaps.htm.