Identification_Information: Citation: Citation_Information: Originator: Illinois Department of Natural Resources Originator: Illinois Natural History Survey Originator: Illinois State Geological Survey Publication_Date: 1994 Title: U.S. Highways in Illinois Edition: 1.1 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: ISGS GIS Database Issue_Identification: GISDB.IL_INFRA_ROADS_US_Highways_Ln Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Online_Linkage: http://www.isgs.illinois.edu/ Online_Linkage: http://illinois.edu Description: Abstract: This data set contains U.S. highways in Illinois. This is a subset of the All_Roads feature class. Note that the functional classification of roadways is the jurisdiction of the Illinois Department of Transportation and is subject to change. For more current road information, including downloadable GIS data, refer to the Illinois Department of Transportation Technology Transfer Center (IDOT T2 Center) at http://dot.state.il.us/blr/t2center1.html. Data were 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. Major highways were updated as of 1993. The maximum estimated error in horizontal position based on National Map Accuracy Standards is 167 feet. Attributes include up to three highway route numbers. The data are stored in geographic coordinates, NAD83. These data have not been updated since 1993, nor are there current plans to do so. This metadata file was originally written by staff of the INHS. Maintenance of the metadata was transferred to ISGS circa 1996. Purpose: In a natural resources context, US highways 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 regional thematic analysis. They are not appropriate for local analysis or as a geodetic or engineering base. This dataset serves as an important base cartographic element for many types of maps and has been widely distributed and used outside the ISGS. The data set was not and is not intended as a substitute for surveyed locations, such as can be determined by a registered Public Land Surveyor. Although useful in a GIS as a reference base layer for maps, the data set has no legal basis in the definition of boundaries or property lines. Supplemental_Information: Edition 1.0 of this dataset was updated by conversion to the ArcSDE data storage model and metadata update. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1994 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -91.420851 East_Bounding_Coordinate: -87.519540 North_Bounding_Coordinate: 42.499993 South_Bounding_Coordinate: 37.000124 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: infrastructure Theme_Keyword: expressway Theme_Keyword: highway Theme_Keyword: interstate Theme_Keyword: route Theme_Keyword: toll road Theme_Keyword: road Place: Place_Keyword_Thesaurus: none Place_Keyword: Illinois Access_Constraints: ISGS information must be obtained directly from the ISGS or from an authorized distributor. Be aware that ISGS information obtained from an unauthorized third party may have been altered subsequent to original distribution, or may no longer be current. Any access to these data, Web sites, computer systems, electronic services, and electronic networks is governed by University and campus policies, in particular, but not limited to, the Policy on Appropriate Use of Computers and Network Systems at the University of Illinois at Urbana-Champaign, the ISGS Terms of Use document available at the ISGS Web site, and the University of Illinois Web Privacy Notice. Links to these are provided in the Cross References section. Use_Constraints: ISGS information is the property of and copyrighted by the Board of Trustees of the University of Illinois with all rights reserved.  University copyright policy is stated in the General Rules Concerning University Organization and Procedure, Article III, Section 4. A link is provided in the Cross References section. Individuals or entities may make fair use of copyrighted ISGS material, such as reproducing a single figure or table, or using a brief text quotation, without obtaining formal permission, but in all cases the Illinois State Geological Survey must be credited as the source of the material. To reproduce ISGS information beyond the fair use standard, permission must be obtained from the ISGS Information Office, 615 East Peabody Drive, Champaign, Illinois 61820, 217-333-4747, isgs@isgs.illinois.edu. License fees and a license agreement may be required, depending on the proposed usage. Any use of these data is governed by University and campus policies, in particular, but not limited to, the Policy on Appropriate Use of Computers and Network Systems at the University of Illinois at Urbana-Champaign, the ISGS Terms of Use document available at the ISGS Web site, and the University of Illinois Web Privacy Notice. Links to these are provided in the Cross References section. Map information is to be used at a scientifically and cartographically appropriate scale, that is, at a scale no greater than indicated on the map or as described in the documentation of the map or map data.  Map information is not appropriate for, and is not to be used as, a geodetic, legal, or engineering base. Map information has no legal basis in the definition of boundaries or property lines and is not intended as a substitute for surveyed locations such as can be determined by a registered Public Land Surveyor. The data do not replace the need for detailed site-specific studies. Point_of_Contact: Contact_Information: Contact_Instructions: Please refer to the Distribution Information section. Data_Set_Credit: GIS Processing: INHS Staff Documentation: INHS and ISGS Staff Quality Control: INHS Staff Native_Data_Set_Environment: ArcSDE 9.1 on Oracle 10g Cross_Reference: Citation_Information: Title: ISGS Terms of Use Online_Linkage: http://www.isgs.illinois.edu Cross_Reference: Citation_Information: Title: University of Illinois Web Privacy Notice Online_Linkage: http://www.vpaa.uillinois.edu/policies/web_privacy.cfm Cross_Reference: Citation_Information: Title: University Copyright Policy (stated in the General Rules Concerning University Organization and Procedure, Article III, Section 4) Online_Linkage: http://www.uillinois.edu/trustees/rules.cfm#sec34 Cross_Reference: Citation_Information: Title: Policy on Appropriate Use of Computers and Network Systems at the University of Illinois at Urbana-Champaign Online_Linkage: http://www.fs.uiuc.edu/cam/CAM/viii/viii-1.1.html Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: No report. Logical_Consistency_Report: No report. Completeness_Report: No statement of completeness was provided with the original USGS DLG data. Visual inspection and use suggests this dataset was comprehensive in 1993. All US highways in Illinois contained in the source USGS 1:100,000 DLG files are included. Some updates were made in 1993. Any new US highways since 1993 are not included. For more current road information, including downloadable GIS data, refer to the Illinois Department of Transportation Technology Transfer Center (IDOT T2 Center) at http://dot.state.il.us/blr/t2center1.html. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: It is assumed accuracy is equal to that of 1:100,000 analog source maps based on USGS National Map Accuracy Standards. No accuracy statement was provided with the source maps. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: US Geological Survey Publication_Date: 1980-1986 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: 1986 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: none Source_Contribution: Location of Illinois state routes as contained in the USGS 1:100,000 DLG files 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: Coverage ushways from ISGS GISDB archive reprojected from customary ISGS Lambert projection, NAD27 to geographic coordinates, NAD83, double-precision. That coverage was imported into ISGS SDE enterprise database, following steps outlined in ISGS procedure GISDB_0009. Field names including the pound-sign character were renamed to eliminate that character (not allowed by Oracle). The US# field contained up to 3 highway designations for any given line. It was dropped and the highway numbers were segregated into existing field US_1, US_2 and US_3. Spatial index grid size was set at 0.9 degrees. Metadata was updated. Process_Date: 20040225 Process_Contact: Contact_Information: Contact_Person_Primary: 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: 290 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000001 Longitude_Resolution: 0.000001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: Attribute items are in typical ArcSDE feature class format. Those requiring additional explanations are: US_1, US_2, and US_3 The value is equal to the designated number of the highway. Three fields are used to account for areas where several highways overlap. A line may have up to three numerical designations. Any highway having a value for US_2 or US_3 should also have a value for US_1. All lines have at least one highway number. Values are from DLG files, 1980-86, USGS and IDOT county base map series. Entity_and_Attribute_Detail_Citation: none Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Information Office, Illinois State Geological Survey (ISGS), a division of the Institute of Natural Resource Sustainability (INRS) of the University of Illinois 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_Electronic_Mail_Address: isgs@isgs.illinois.edu Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time Distribution_Liability: Refer to the Legal Notices of Terms and Conditions of the University of Illinois Web Privacy Policy (there is a link in the Cross References section) for policy statements regarding the following: Disclaimer of Liability Disclaimer of Warranties and Accuracy of Data Disclaimer of Endorsement Disclaimer for External Links Disclaimer of Duty to Continue Provision of Data Security Choice of Law By obtaining these data you agree to the provisions of the University of Illinois Web Privacy Policy, regardless of the manner in which the information was obtained. Technical_Prerequisites: The data are intended for use with GIS software. The ISGS uses ESRI ArcGIS software, however, ESRI formats can be imported into many different GIS software packages. It is expected that customers who obtain these data have the technical expertise to use GIS software. The ISGS does not provide software support of any kind. Metadata_Reference_Information: Metadata_Date: 20090224 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Instructions: Please refer to the Distribution Information section. Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Access_Constraints: The access constraints as stated for the data apply also to the metadata. Refer to the Access Constraints section of the Identification Information section. Metadata_Use_Constraints: The use constraints as stated for the data apply also to the metadata. Refer to the Use Constraints section of the Identification Information section. Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile