Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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Active Digital Message Signs: Iowa

Iowa Department of Transportation. Iowa Department of Transportation's Intelligent Transportation System (ITS) Digital Message Signs (DMS) devices.

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Adoptahighway Current Adopted Location: Iowa, United States

Iowa Department of Transportation. A visual representation of the currently adopted sections of highway in Iowa. Additionally, this map displays the sections of highway that are neve...

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Adoptahighway Never Adoptable Location: Iowa, United States

Iowa Department of Transportation. A visual representation of the currently adopted sections of highway in Iowa. Additionally, this map displays the sections of highway that are neve...

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Airport Approach Surface Location: Iowa, United States

Iowa Department of Transportation. The approach surface is longitudinally centered on the extended runway centerline and extends outward and upward from each end of the primary surfa...

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Airport Approach Surface Precision Location: Iowa, United States

Iowa Department of Transportation. The approach surface is longitudinally centered on the extended runway centerline and extends outward and upward from each end of the primary surfa...

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Airport Conical Surface Location: Iowa, United States

Iowa Department of Transportation. The Conical surface extends outwards and upwards from the boundary of the horizontal surface at a slope of 20:1 for a horizontal distance of 4,000 .

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Airport Horizontal Surface Location: Iowa, United States

Iowa Department of Transportation. The Horizontal surface is a plane 150 above the established airport elevation. The perimeter of which is constructed by swinging arcs of specified ...

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Airport: Linn County, Iowa

Linn County Iowa GIS. This feature layer contains Linn County, Iowa airports.Feature Layer DetailsUpdate Frequency: As neededFeature Class Coordinate System: NAD 1983 Io...

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Airport Location: Iowa

Iowa Department of Transportation. Airport locations and information in Iowa including contact information, location details and more.

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Airport Primary Surface Location: Iowa, United States

Iowa Department of Transportation. The Primary surface extends 200 feet beyond each end of the runway, but when the runway has no specially prepared hard surface, the surface ends at...

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Airport Runway Location: Iowa, United States

Iowa Department of Transportation. Airport runway locations and information in Iowa including contact information, location details and more.

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Airport Transitional Surface Location: Iowa, United States

Iowa Department of Transportation. The Primary surface extends 200 feet beyond each end of the runway, but when the runway has no specially prepared hard surface, the surface ends at...

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Airport Transitional Surface Precision Location: Iowa, United States

Iowa Department of Transportation. The transitional surface extends outward and upward at right angles to the primary and approach surfaces at a slope of 7:1.

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All Systems Permit (All Restricted - County Level): Iowa

2016. Iowa Department of Transportation. Displays counties where all county roads are restricted. Street-level restriction map can be found here: http://www.iowadot.gov/mvd/motorcarriers/s...

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All Systems Permit (No Restrictions - County Level): Iowa

2016. Iowa Department of Transportation. Displays counties where no county roads are restricted. Street-level restriction map can be found here: http://www.iowadot.gov/mvd/motorcarriers/sy...

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All Systems Permit (Some Restrictions - County Level): Iowa

2016. Iowa Department of Transportation. Displays counties where some county roads are restricted. Street-level restriction map can be found here: http://www.iowadot.gov/mvd/motorcarriers/...

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Alternate Routes, Transportation Incident Management: Iowa

2018. Iowa Department of Transportation. This layer contains Iowa DOT Office of Transportation Operations Transportation Incident Management (TIM) Closures and Alternative Routes.

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Ambulance Service: Linn County, Iowa

Linn County Iowa GIS. This feature layer contains ambulance services serving Linn County, Iowa.Feature Layer DetailsUpdate Frequency: As neededFeature Class Coordinate S...

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Automatic Traffic Recorders Location: Iowa, United States

Iowa Department of Transportation. Automatic Traffic Recorder (ATR) Continuous Count location sites in the state of Iowa. This data is updated on the 10th of each month.

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Barrier Cable Location: Iowa, United States

Iowa Department of Transportation. Cable Barriers in State of Iowa.