Illinois Department of Transportation, Erica Borggren, Acting Secretary
Patrick J. Quinn, Governor
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Illinois Highway Information System
Roadway Information & Procedure Manual
July 1, 2001
(with revisions as of November 28, 2006)

Data Item Listed Alphabetically by Item Name



National Highway System
National Railroad Crossing Number
Nonattainment Area
Original Pavement Cross Section
Original Pavement Design
Original Pavement Reinforcement
Original Pavement Subbase Thickness
Original Pavement Width
Parking Restrictions Left
Parking Restrictions Right
Pavement Distress Against
Pavement Distress With
Planning Agency
Reference Key Route
Reference Marked Route
Reference Point
Reference Point Orientation
Reference Point Type
Reference Street Name
Representative District
Right-of-Way Available
Right-of-Way Existing
Route Station
Rut Depth Against
Rut Depth With

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