The Connecticut Street Network State Plane, TIGER/Line 2000 database is a statewide database of address-ranged street segments compiled from the Census 2000 TIGER/Line files. TIGER, TIGER/Line, and Census TIGER are registered trademarks of the U.S. Census Bureau. ZCTA is a trademark of the U.S. Census Bureau. The Census 2000 TIGER/Line files are an extract of selected geographic and cartographic information from the Census TIGER data base. The geographic coverage for a single TIGER/Line file is a county or statistical equivalent entity, with the coverage area based on January 1, 2000 legal boundaries. A complete set of Census 2000 TIGER/Line files includes all counties and statistically equivalent entities in the United States, Puerto Rico, and the Island Areas. The Census TIGER data base represents a seamless national file with no overlaps or gaps between parts. However, each county-based TIGER/Line file is designed to stand alone as an independent data set or the files can be combined to cover the whole Nation. The Census 2000 TIGER/Line files consist of line segments representing physical features and governmental and statistical boundaries. The boundary information in the TIGER/Line files are for statistical data collection and tabulation purposes only; their depiction and designation for statistical purposes does not constitute a determination of jurisditional authority or rights of ownership or entitlement. The Census 2000 TIGER/Line files do NOT contain the Census 2000 urban areas which have not yet been delineated. The files contain information distributed over a series of record types for the spatial objects of a county. There are 17 record types, including the basic data record, the shape coordinate points, and geographic codes that can be used with appropriate software to prepare maps. Other geographic information contained in the files includes attributes such as feature identifiers/census feature class codes (CFCC) used to differentiate feature types, address ranges and ZIP Codes, codes for legal and statistical entities, latitude/longitude coordinates of linear and point features, landmark point features, area landmarks, key geographic features, and area boundaries. The Census 2000 TIGER/Line data dictionary contains a complete list of all the fields in the 17 record types.
In order for others to use the information in the Census TIGER data base in a geographic information system (GIS) or for other geographic applications, the Census Bureau releases to the public extracts of the data base in the form of TIGER/Line files. The University of Connecticut Center for Geographic Information and Analysis prepares databases from the public extracts released by the Census Bureau as a service to the University community and the state.
To find out more about the University of Connecticut Center for Geographic Information and Analysis visit http://www.uccgia.uconn.edu. To find out more about TIGER/Line files and other Census TIGER data base derived data sets visit http://www.census.gov/geo/www/tiger.
ground condition
None. Acknowledgment of the University of Connecticut Center for Geographic Information and Analysis would be appreciated for products derived from these files. TIGER, TIGER/Line, and Census TIGER are registered trademarks of the U.S. Census Bureau. ZCTA is a trademark of the U.S. Census Bureau.
Accurate against Federal information Processing Standards (FIPS), FIPS Publication 6-4, and FIPS-55 at the 100% level for the codes and base names. The remaining attribute information has been examined but has not been fully tested for accuracy.
The feature network of lines (as represented by Record Types 1 and 2) is complete for census purposes. Spatial objects in TIGER/Line belong to the "Geometry and Topology" (GT) class of objects in the "Spatial Data Transfer Standard" (SDTS) FIPS Publication 173 and are topologically valid. Node/geometry and topology (GT)-polygon/chain relationships are collected or generated to satisfy topological edit requirements. These requirements include: Complete chains must begin and end at nodes. Complete chains must connect to each other at nodes. Complete chains do not extend through nodes. Left and right GT-polygons are defined for each complete chain element and are consistent throughout the extract process. The chains representing the limits of the files are free of gaps. The Census Bureau performed automated tests to ensure logical consistency and limits of files. All polygons are tested for closure. The Census Bureau uses its internally developed Geographic Update System to enhance and modify spatial and attribute data in the Census TIGER data base. Standard geographic codes, such as FIPS codes for states, counties, municipalities, and places, are used when encoding spatial entities. The Census Bureau performed spatial data tests for logical consistency of the codes during the compilation of the original Census TIGER data base files. Most of the Codes themselves were provided to the Census Bureau by the USGS, the agency responsible for maintaining FIPS 55. Feature attribute information has been examined but has not been fully tested for consistency.
Data completeness of the TIGER/Line files reflects the contents of the Census TIGER data base at the time the TIGER/Line files (Census 2000 version) were created.
The information present in these files is provided for the purposes of statistical analysis and census operations only. Coordinates in the TIGER/Line files have six implied decimal places, but the positional accuracy of these coordinates is not as great as the six decimal places suggest. The positional accuracy varies with the source materials used, but generally the information is no better than the established national map Accuracy standards for 1:100,000-scale maps from the U.S. Geological Survey (USGS); thus it is NOT suitable for high-precision measurement applications such as engineering problems, property transfers, or other uses that might require highly accurate measurements of the earth's surface. The USGS 1:100,000-scale maps met national map accuracy standards and use coordinates defined by the North American Datum, 1983. For the contiguous 48 States, the cartographic fidelity of most of the Census 2000 TIGER/Line files, in areas outside the 1980 census Geographic Base File/Dual Independent map Encoding (GBF/DIME) file coverage and selected other large metropolitan areas, compare favorably with the USGS 1:100,000-scale maps. The Census Bureau cannot specify the accuracy of features inside of what was the 1980 GBF/DIME-File coverage or selected metropolitan areas. The Census Bureau added updates to the TIGER/Line files that enumerators annotated on maps sheets prepared from the Census TIGER data base as they attempted to traverse every street feature shown on the Census 2000 map sheets; the Census Bureau also made other corrections from updated map sheets supplied by local participants for Census Bureau programs. The locational accuracy of these updates is of unknown quality. In addition to the Federal, State, and local sources, portions of the files may contain information obtained in part from maps and other materials prepared by private companies. Despite the fact the TIGER/Line data positional accuracy is not as high as the coordinate values imply, the six-decimal place precision is useful when producing maps. The precision allows features that are next to each other on the ground to be placed in the correct position, on the map, relative to each other, without overlap.
Selected geographic and cartographic information (line segments) from the Census TIGER data base.
In order for others to use the information in the Census TIGER data base in a GIS or for other geographic applications, the Census Bureau releases periodic extracts of selected information from the Census TIGER data base, organized as topologically consistent networks. Software (TIGER DB routines) written by the Geography Division allows for efficient access to Census TIGER system data. TIGER/Line files are extracted from the Census TIGER data base by county or statistical equivalent area. Census TIGER data for a given county or statistical equivalent area is then distributed among 17 fixed length record ASCII files, each one containing attributes for either line, polygon, or landmark geographic data types. The Census Bureau has released various versions of the TIGER/Line files since 1988, with each version having more updates (feature and feature names, address ranges and ZIP Codes, coordinate updates, revised field definitions, etc.) than the previous version. The Census 2000 TIGER/Line files for each county in Connecticut were downloaded from the Census web site on November 5, 2001. The individual county files were unzipped. Using ArcGIS 8.1, the unzipped file for each county was created as a polygon coverage using the TIGER To Coverage Wizard for TIGER 2000 files. For each county, a polygon coverage was created containing area and line attributes. TIGER 2000 was selected as the TIGER/Line file version. The "Yes" option was used to Join Tables to the geography. Each polygon coverage was built in ARC, building the polygon coverage as a polygon coverage including rebuilding the AAT. In ARCEDIT, road features were selected from the arcs of each county polygon coverage. These features were based on the Census Feature Class Code (CFCC) of the arc. CFCCs denoting roads begin with the letter "A" as outlined in the technical documentation for the TIGER/Line files. Some road segments in the development of the TIGER 2000 were considered provisional because they were not confirmed in the field by Census staff. The CFCC for these segments begins with the letter "P". These segments were retained. In ARC, the county polygon coverages were appended to create a single statewide coverage. The lines in the polygon coverage were cleaned based on a dangle of 10 and a fuzzy tolerance of 4. The statewide coverage was built as a polygon coverage and the arcs were also rebuilt. In ARCEDIT, all of the polygons and polygon topology were deleted from the coverage. Any arc with a CFCC that was not "A" or "P" was deleted. The arcs were rebuilt and saved. The coverage was projected to Connecticut State Plane Coordinate System NAD83. The ZIPLC, ZIPRC, were added to the Arc Attribute Table by performining a JOINITEM with a table of zip codes. The TNOL, TNAL, TNOCL, TNACAPSL, TNOR, TNAR, TNOCR, and TNACAPSR fields were added to the Arc Attribute Table by performing a JOINITEM with a table of town numbers and names. The coverage was exported to .e00 format. This export file was imported to an ArcInfo coverage. The BUILD function was performed on the coverage using the LINE option to ensure topology. There were 199,636 records in the Arc Attribute Table. Unique street-ID values in the Arc Attribute Table were created by basing them on Street# field values (CALCULATE Street-ID = Street#), and the performing an IDEDIT on the coverage using the LINE option to update all affected coverage tables. The LEGEND field was added to the Arc Attribute Table by performing a JOINITEM with a table of street legends based on CFCCs. The LENGTHFT field was added to the Arc Attribute Table and its value was calculated based on the value of the LENGTH field (CALCULATE Lengthft = Length). The Type and Width for the TNOL and TNOR fields were changed from binary to integer. The street coverage was converted to shapefile format; map units are feet.
Internal feature number.
ESRI
Road segment legend created based on Census Feature Class Codes (CFCC)
University of Connecticut, Center for Geographic Information Analysis
Includes CFCC values A11, A13, A15, and A17.
Includes CFCC values P21, A21, A23, A25, A31, A33, and A35.
Includes CFCC value A63.
Includes CFCC values P41, A41, A43, A44, A45, and A64.
Includes CFCC values A51, A71, A73, and A74.
Length in feet
University of Connecticut, Center for Geographic Information Analysis
Record Type
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Version Number
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Single-Side Complete Chain Code
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Linear Segment Source Code
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Updated 1980 GBF/DIME-File
USGS 1:100,000-Scale DLG-3 File
Pre-1990 Census Updates
Post-1990 Census Updates (1990-1994)
Pre-Census 2000 Local Official Updates (1995-Census 2000)
Pre-Census 2000 field Operations (1995-Census 2000)
Pre-Census 2000 Office Update Operations (1995-Census 2000)
Post-Census 2000 (2000-2002)
Feature Direction, Prefix
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
North
South
East
West
Feature Name
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Feature Type
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Alley
Avenue
Boulevard
Branch
Bridge
Bypass
Circle
Court
Center
Cove
Drive
Expressway
Highway
Lane
Loop
Mall
Overpass
Pass
Path
Pike
Parkway
Place
Plaza
Ramp
Road
Row
Run
Spur
Square
Street
Terrace
Turnpike
Trace
Trail
Walk
Way
Crossing
Feature Direction, Suffix
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
North
South
East
West
Census Feature Class Codes
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Primary road with limited access or interstate highway, unseparated
Primary road with limited access or interstate highway, unseparated,underpassing
Primary road with limited access or interstate highway, separated
Primary road with limited access or interstate highway, separated, underpassing
Primary road without limited access, US highways, unseparated
Primary road without limited access, US highways, unseparated, underpassing
Primary road without limited access, US highways, separated
Secondary and connecting road, state highways, unseparated
Secondary and connecting road, state highways, unseparated, in tunnel
Secondary and connecting road, state highways, unseparated, underpassing
Secondary and connecting road, state highways, separated
Local, neighborhood, and rural road, city street, unseparated
Local, neighborhood, and rural road, city street, unseparated, underpassing
Local, neighborhood, and rural road, city street, unseparated, with rail line in street
Local, neighborhood, and rural road, city street, separated
Vehicular trail, road passable only by 4WD vehicle, unseparated
Access ramp, the portion of a road that forms a cloverleaf or limited-access interchange
Service drive, the road or portion of a road that provides access to businesses, facilities, and rest areas along a limited-access highway; this frontage road may intersect other roads and be named
Ferry crossing, the representation of a route over water that connects roads on opposite shores; used by ships carrying automobiles or people
Walkway or trail for pedestrians, usually unnamed
Alley, road for service vehicles, usually unnamed, located at the rear of buildings and property
Driveway or service road, usually privately owned and unnamed, used as access to residences, trailer parks, and apartment complexes, or as access to logging areas, oil rigs, ranches, farms, and park lands
Primary road without limited access, US highways, unseparated (provisional feature)
Local, neighborhood, and rural road, city street, unseparated (provisional feature)
Start Address, Left
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
End Address, Left
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Start Address, Right
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
End Address, Right
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Start Imputed Address Flag, Left
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
End Imputed Address Flag, Left
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Start Imputed Address Flag, Right
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
End Imputed Address Flag, Right
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
ZIP Code, Left
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
ZIP Code, Right
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
ZIP Code, Left, Character: 5-digit zip code left in a character field (with leading zero for Connecticut zip codes)
University of Connecticut, Center for Geographic Information Analysis
ZIP Code, Right, Character: a 5-digit zip code right in a character field (with leading zero for Connecticut Zip codes)
University of Connecticut, Center for Geographic Information Analysis
FIPS 55 Code (American Indian/Alaska Native Area/Hawaiian Home Land), 2000 Left
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
FIPS 55 Code (American Indian/Alaska Native Area/Hawaiian Home Land), 2000 Right
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
American Indian/Hawaiian Home Land Trust Land Indicator, 2000 Left
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
American Indian/Hawaiian Home Land Trust Land Indicator, 2000 Right
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Census Use 1
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Census Use 2
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
FIPS State Code, 2000 Left
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Connecticut
FIPS State Code, 2000 Right
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Connecticut
FIPS County Code, 2000 Left
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Fairfield County
Hartford County
Litchfield County
Middlesex County
New Haven County
New London County
Tolland County
Windham County
FIPS County Code, 2000 Right
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Fairfield County
Hartford County
Litchfield County
Middlesex County
New Haven County
New London County
Tolland County
Windham County
FIPS 55 Code (County Subdivision) 2000 Left
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
FIPS 55 Code (County Subdivision), 2000 Right
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
FIPS 55 Code (Subbarrio), 2000 Left
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
FIPS 55 Code (Subbarrio), 2000 Right
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
FIPS 55 Code (Place/CDP), 2000 Left
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
FIPS 55 Code (Place/CDP), 2000 Right
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Census Tract Code, 2000 Left
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Census Tract Code, 2000 Right
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Census Block Number, 2000 Left
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Census Block Number, 2000 Right
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Start Longitude
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
Start Latitude
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
End Longitude
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
End Latitude
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
TIGER/Line ID, Permanent Record Number
U.S. Census Bureau, Census 2000 TIGER/Line Technical Documentation
University of Connecticut, Center for Geographic Information Analysis
University of Connecticut, Center for Geographic Information Analysis
Town Number Left
University of Connecticut, Center for Geographic Information Analysis
Town Name Left in upper and lower case.
University of Connecticut, Center for Geographic Information Analysis
Town Number Character Left; The town number left represented as a character field.
University of Connecticut, Center for Geographic Information Analysis
Town Name Left in all Capitals (uppercase)
University of Connecticut, Center for Geographic Information Analysis
Town Number Right
University of Connecticut, Center for Geographic Information Analysis
Town Name Right in Upper and Lower Case
University of Connecticut, Center for Geographic Information Analysis
Town Number Character Right; The town number right represented as a character field.
University of Connecticut, Center for Geographic Information Analysis
Town Name Right in all Capitals (uppercase)
University of Connecticut, Center for Geographic Information Analysis
Feature geometry.
ESRI
79 Elm Street
No warranty, expressed or implied is made and no liability is assumed by the U.S. Government in general or the U.S. Census Bureau in specific as to the positional or attribute accuracy of the data. The act of distribution shall not constitute any such warranty and no responsibility is assumed by the U.S. Government in the use of these files. No warranty, expressed or implied is made and no liability is assumed by the University of Connecticut in general or the University of Connecticut Center for Geographic Information and Analysis in specific as to the accuracy of the data.
An offline copy of the data is available on CD-ROM from the Connecticut Department of Environmental Protection as part of a set of digital geographic databases for the state. Contact the DEP Store for information on the costs for this product at 860-424-3555 or visit the DEP Store website at http://www.dep.state.ct.us/store
Babbidge Library, 369 Fairfield Road Unit 1005