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 1, 2005)

Data Item Listed Alphabetically by Item Name

Railroad Crossing Rideability

Reference Key Route

Reference Marked Route

Reference Point

Reference Point Orientation

Reference Point Type

Reference Street Name

Representative District

Representative District Adjacent

Right-of-Way Available

Right-of-Way Existing

Route Alignment Remarks

Route Direction - Compass

Route Station

Rut Depth Against

Rut Depth With

Shoulder Inside Type 1

Shoulder Inside Type 2

Shoulder Inside Width 1

Shoulder Inside Width 2

Shoulder Outside Type 1

Shoulder Outside Type 2

Shoulder Outside Width 1

Shoulder Outside Width 2

Special Systems

Speed Zone Speed Limit

Street/Road Name

Structure 10-Foot Vertical Clearance

Structure Number

Structure Vertical Clear

Surface Type

Surface Width

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