Interstates and Toll Roads in Illinois

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Illinois State Geological Survey

Publication_Date: 1996 - not published

Title: Interstates and Toll Roads in Illinois

Edition: 1.1

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: IDNR GIS Database

Issue_Identification: intstate

Publication_Information:

Publication_Place: Champaign, Illinois

Publisher: Illinois State Geological Survey

Online_Linkage:

Downloadable Data (Shift-Click to download data file) <URL:http://www.isgs.uiuc.edu/nsdihome/browse/statewide/intstate.e00>

Online_Linkage:

Browse Graphic (GIF) Screen-size image representing the nature of the data. <URL:http://www.isgs.uiuc.edu/nsdihome/browse/statewide/intstateb.gif>

Online_Linkage:

Text (.txt) version of this Metadata file. (Shift-Click to download documentation) <URL:http://www.isgs.uiuc.edu/nsdihome/outmeta/intstate.txt>

Online_Linkage:

HTML (.html) version of this Metadata file. (Shift-Click to download documentation) <URL:http://www.isgs.uiuc.edu/nsdihome/outmeta/intstate.html>

Description:

Abstract:

This data set contains interstates and toll roads for Illinois. This is a subset of the roads data set stored by county. Note that the functional classification of roadways is the jurisdiction of the Illinois Department of Transportation and is subject to change. Data are derived from the US Geological Survey 1:100,000 Digital Line Graph files, transportation layer, 1980-1986. Publication dates of the USGS maps used as sources range from 1980 to 1996. Major highways were updated as of 1996. The maximum estimated error in horizontal position based on National Map Accuracy Standards is 167 feet. Attributes include up to three interstate route numbers.

Purpose:

In a natural resources context, interstates and toll roads are primarily used as a cartographic element on maps for spatial reference. They are also used for analyses that require, for example, a buffer area between roads and natural features. These data are appropriate for use in local and regional thematic analysis. They are not appropriate as a geodetic or engineering base.

Supplemental_Information:

Updates to this coverage from edition 1.0 include the additions of attribute items US# and STATE#, the addition of I-72 from west of Springfield to the state line (Quincy), and the Elgin-O'Hare Expressway.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1996

Currentness_Reference: publication date

Status:

Progress: complete

Maintenance_and_Update_Frequency: none planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -91.50365772

East_Bounding_Coordinate: -87.41759666

North_Bounding_Coordinate: 42.49181859

South_Bounding_Coordinate: 36.98415011

Keywords:

Theme:

Theme_Keyword_Thesaurus: none

Theme_Keyword: infrastructure

Theme_Keyword: expressway

Theme_Keyword: highway

Theme_Keyword: interstate

Theme_Keyword: route

Theme_Keyword: defense highway

Theme_Keyword: toll road

Theme_Keyword: road

Place:

Place_Keyword_Thesaurus: none

Place_Keyword: Illinois

Access_Constraints: none

Use_Constraints:

Reproduction or redistribution of copyrighted digital data sets or products derived therefrom outside of licensees' organization or entity is expressly forbidden. The only exception is redistribution to consultants working for the licensee, and then only for purposes, related to work for the licensee. Such consultants may not further reproduce or redistribute these data sets. None of these data shall be electronically duplicated on magnetic or optical media for use by others, in whole or in part, without permission of the appropriate custodial division within DNR.

Any hardcopies utilizing DNR data sets shall clearly indicate their source. If the licensee has modified the data in any way they are obligated to describe the types of modifications they have performed on the hardcopy map. Licensee specifically agrees not to misrepresent DNR data sets, nor to imply that changes they made were approved by DNR.

These data are not to be used for commercial profit.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Illinois State Geological Survey

Contact_Position: Information Office

Contact_Address:

Address_Type: mailing and physical address

Address: 615 East Peabody Drive

City: Champaign

State_or_Province: Illinois

Postal_Code: 61820

Country: USA

Contact_Voice_Telephone: 217-333-4747

Contact_TDD/TTY_Telephone: 217-785-0211

Contact_Facsimile_Telephone: 217-244-0802

Contact_Electronic_Mail_Address: isgs@isgs.uiuc.edu

Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time

Data_Set_Credit:

 Coverage construction: ISGS and INHS staff
 Latest updates: B. Stiff, P. Weibel
 Documentation: D. Nelson, P. Weibel, and S. Beaverson
 Quality Control: ISGS and INHS staff

Native_Data_Set_Environment:

SunOS, 5.5.1, sun4m UNIX ARC/INFO version 7.0.4

Cross_Reference:

Citation_Information:

Originator: Illinois Department of Natural Resources

Publication_Date: 1994

Title: Illinois State Roads

Series_Information:

Series_Name: IDNR GIS Database

Issue_Identification: stroutes

Publication_Information:

Publication_Place: Champaign, Illinois

Publisher: Illinois Department of Natural Resources

Online_Linkage:

Data Set Documentation <URL:http://www.isgs.uiuc.edu/nsdihome/outmeta/stroutes.html>

Cross_Reference:

Citation_Information:

Originator: Illinois Department of Natural Resources

Publication_Date: 1994

Title: U. S. Highways in Illinois

Series_Information:

Series_Name: IDNR GIS Database

Issue_Identification: ushways

Publication_Information:

Publication_Place: Champaign, Illinois

Publisher: Illinois Department of Natural Resources

Online_Linkage:

Data Set Documentation <URL:http://www.isgs.uiuc.edu/nsdihome/outmeta/ushways.html>

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report: not available

Logical_Consistency_Report:

Chain-node topology present. Data set is topologically structured linear data with nodes at all intersections. Pseudo nodes (nodes between arcs with common attribute values across all non-system attribute fields) may exist on some arcs.

Completeness_Report:

No statement of completeness was provided with the original USGS DLG data. Visual inspection and use suggests that coverage is comprehensive but reflective of the date of source map publication date. This date varies across the state. All interstates and toll roads contained in USGS 1:100,000 DLG files are included.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

In general, accuracy is equal to that of 1:100,000 analog source maps based on USGS National Map Accuracy Standards. Some updates were taken from USGS 7.5' topographic quadrangles. These updates are within one line-width of the corresponding line on the source map. No accuracy statement was provided with the source map.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: US Geological Survey

Publication_Date: 1980-1991

Title:

US Geological Survey 1:100,000 Digital Line Graph files, transportation layer

Source_Scale_Denominator: 100000

Type_of_Source_Media: digital file

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1980

Ending_Date: 1991

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: none

Source_Contribution:

Location of interstate roads as contained in the USGS 1:100,000 DLG files

Source_Information:

Source_Citation:

Citation_Information:

Originator: US Geological Survey

Publication_Date: varies

Title: US Geological Survey 1:24,000 topographic quadrangles

Source_Scale_Denominator: 24000

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: varies

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: none

Source_Contribution:

Update information for I-72 from west of Springfield to the state line (Quincy), and the Elgin-O'Hare Expressway

Process_Step:

Process_Description:

Derived from the US Geological Survey 1:100,000 Digital Line Graph files, transportation layer, 1980-1986. Publication dates of the USGS maps used as sources range from 1980 to 1986.

Process_Date: 1980-1986

Process_Step:

Process_Description:

Major highways were updated as of 1993 by the Illinois Natural History Survey.

Process_Date: 1993

Process_Step:

Process_Description:

This coverage was clipped on January 1, 1996 to exclude arcs extending beyond the Illinois state boundary, using the coverage re-state1. Additional updates occurred on June 10, 1996 by the Illinois State Geological Survey, again using the USGS 1:100,000 DLGs. Arcs were selected from the DLGs and appended to this coverage and route values were updated in the items as appropriately needed. Updates were also made from USGS 1:24,000 topographic quadrangles.

Process_Date: 1996

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: String

Point_and_Vector_Object_Count: 381

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: Lambert Conformal Conic

Lambert_Conformal_Conic:

Standard_Parallel: 33

Standard_Parallel: 45

Longitude_of_Central_Meridian: -89.5

Latitude_of_Projection_Origin: 33

False_Easting: 914400.00000 meters

False_Northing: 0.00000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: not determined

Ordinate_Resolution: not determined

Planar_Distance_Units: feet

Geodetic_Model:

Horizontal_Datum_Name: NAD27

Ellipsoid_Name: Clarke 1866

Semi-major_Axis: 6378206.4 meters

Denominator_of_Flattening_Ratio: 294.98

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:

Attribute items are in typical ARC/INFO feature class format. Those requiring additional explanations are:

Arc Attributes:

INTERST# - The value is equal to the designated route number of the interstate. Where several interstates overlap, the value includes all designated route numbers separated by a zero. For example, 70057 indicates that the arc represents a portion of the interstate that is designated both as I-57 and I-70. There is a single exception: The Elgin-O'Hare Expressway has not been officially numbered. Valid values are 24, 39, 55, 57, 64, 70, 72, 74, 80, 88, 90, 94, 155, 172, 180, 190, 255, 270, 290, 294, 355, and 474.

INTERST# - Redefined to INT#1, INT#2, INT#3 INT#1, INT#2, and INT#3 - Interstate route numbers Route numbers are contained in a single item which is subsequently redefined to deal with coincident routes (routes carrying more than one highway route number). Any route having a value for route 2 or 3 should also have a value for route 1. from DLG files, 1980-86, USGS and IDOT county base map series.

US# - The value is equal to the US highway route where the arc represents both a portion of the interstate system and the US highway system. If one or more US highways overlap the interstate, the value includes all designated route numbers separated by a zero. Valid values are 6, 36, 40, 50, and 51.

STATE# - The value is equal to the Illinois highway route where the arc represents both a portion of the interstate system and the Illinois highway system. Currently, no portions of the interstate system overlap with the Illinois highway system.

Entity_and_Attribute_Detail_Citation: none

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Illinois State Geological Survey

Contact_Position: Information Office

Contact_Address:

Address_Type: mailing and physical address

Address: 615 East Peabody Drive

City: Champaign

State_or_Province: Illinois

Postal_Code: 61820

Country: USA

Contact_Voice_Telephone: 217-333-4747

Contact_TDD/TTY_Telephone: 217-785-0211

Contact_Facsimile_Telephone: 217-244-0802

Contact_Electronic_Mail_Address: isgs@isgs.uiuc.edu

Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time

Distribution_Liability:

The Illinois Department of Natural Resources (DNR) provides these geographic data "as is." DNR makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. DNR further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers of DNR, no warranty, expressed or implied, is made by DNR regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty.

In no event shall the DNR have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by DNR.

Resource_Description:

An Arc/Info .e00 (export) file is currently available free of charge at the Illinois Natural Resources Geospatial Data Clearinghouse. Refer to the Citation Information portion of this file for access to downloadable data and metadata, and a visual (GIF image) representation of the data.

Metadata_Reference_Information:

Metadata_Date: 19980731

Metadata_Review_Date: 19980731

Metadata_Future_Review_Date: 20008

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Illinois State Geological Survey

Contact_Position: Information Office

Contact_Address:

Address_Type: mailing and physical address

Address: 615 East Peabody Drive

City: Champaign

State_or_Province: Illinois

Postal_Code: 61820

Country: USA

Contact_Voice_Telephone: 217-333-4747

Contact_TDD/TTY_Telephone: 217-785-0211

Contact_Facsimile_Telephone: 217-244-0802

Contact_Electronic_Mail_Address: isgs@isgs.uiuc.edu

Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time

Metadata_Standard_Name:

FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Access_Constraints: none

Metadata_Use_Constraints: none

Illinois Natural Resources Geospatial Data Clearinghouse