Street Centerlines

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: District Department of Transportation

Publication_Date: 20131226

Title: Street Centerlines

Geospatial_Data_Presentation_Form: vector digital data

Publication_Information:

Publication_Place: Washington, DC

Publisher: DC GIS

Online_Linkage:

Server=10.1.11.144; Service=5151; User=dcgis; Version=SDE.DEFAULT

Description:

Abstract:

Street Centerline Segments. A single line representing each street in the District, segmented at major blocks to preserve geocoding integrity. They follow the general trend of the street and do not deviate due to parking lanes, turning lanes, etc. and contain address ranges for geocoding. The street GIS database includes only the major road types: street centerline.
All DC GIS data is stored and exported in Maryland State Plane coordinates NAD 83 meters. This layer contains complete theoretical address ranges.
METADATA CONTENT IS IN PROCESS OF VALIDATION AND SUBJECT TO CHANGE.

Purpose:

This data set was created to act as a basis for public and private institutions to improve their policy and decision making; promote economic development; and enhance the quality of life for residents and businesses.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20131226

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -77.116734

East_Bounding_Coordinate: -76.909401

North_Bounding_Coordinate: 38.995255

South_Bounding_Coordinate: 38.793168

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: transportation

Theme_Keyword: Planimetrics

Theme_Keyword: road

Theme_Keyword: Interstate

Theme_Keyword: location

Theme_Keyword: Street Centerline

Theme_Keyword: Street

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Washington, DC

Place_Keyword: District of Columbia

Use_Constraints:

Acknowledgment of the DC Geographic Information Systems Program (DC GIS). The District of Columbia Government makes no claims as to the completeness, accuracy or content of any data contained hereon, and makes no representation of any kind, including, but not limited to, the warranty of the accuracy or fitness for a particular use, nor are any such warranties to be implied or inferred with respect to the information or data furnished herein.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: D.C. Office of the Chief Technology Officer

Contact_Person: GIS Data Coordinator

Contact_Address:

Address_Type: mailing and physical address

Address: 441 4th St NW, Suite 930 South

City: Washington

State_or_Province: DC

Postal_Code: 20001

Country: USA

Contact_Facsimile_Telephone: (202) 727-5660

Contact_Electronic_Mail_Address: [email protected]

Hours_of_Service: 8:30 am - 5:00 pm

Data_Set_Credit: DC District Department of Transportation

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.4000

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Validated by source and/or responsible agency. The original centerline attribute accuracy was tested by manual comparison of the digital orthos/aerial photography with the hard copy plots. In addition, several computer quality control programs were run on the accompanying digital data.

Logical_Consistency_Report: Validated by source and/or responsible agency.

Completeness_Report: Validated by source and/or responsible agency.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Validated by source and/or responsible agency. The original centerlines, as part of the photogrammetric mapping effort, are captured to a planimetric base that meets National Map Accuracy standards for digital mapping at a 1 inch equals 83.33'.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report: N/A

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Dewberry Davis, LLC

Publication_Date: Unknown

Publication_Time: Unknown

Title: Washington DC GIS project

Geospatial_Data_Presentation_Form: map

Type_of_Source_Media: CD-ROM

Source_Citation_Abbreviation: DD1

Source_Contribution: SIS data

Source_Information:

Source_Citation:

Citation_Information:

Originator:

District Department of Transportation (DDOT) - Spatial Database System Division

Publication_Date: 2005

Title: Street Spatial Database

Geospatial_Data_Presentation_Form: vector digital data

Online_Linkage: <http://ddot.dc.gov>

Type_of_Source_Media: Database

Source_Citation_Abbreviation: Street Spatial Database

Source_Contribution: location and attributes

Process_Step:

Process_Description:

SIS Automation
This methodology describes the original centerline capture as part of the 1999 planimetrics:
Step 1 EDMD, D&D, NCPC and designated representatives of DC DPW will meet to accomplish the presentation of the listing of government furnished material that are needed by D&D. Then, set up conventions for the creation of intersection nodes, for attribution, for reporting of omissions, errors, or other QC issues in the SIS data to DC DPW and NCPC. These conventions will be tested and validated during the pilot project.
Step 2 For each contiguous block of centerlines, D&D will extend curb lines through street intersections and generate intersection nodes consistent with DPW guidance established in step 1.
Step 3 Where two or more nodes are present that comprise a single intersection (e.g., two multi-street centerlines that intersect with four nodes), D&D will cluster those nodes and identify an intersection centroid for linking SIS files of street names, address ranges, etc.
Step 4 D&D will overlay the SIS files and conflate them to match the centerlines, nodes, and multi-node centroids. Because of anticipated SIS shortcomings, such as identified in D&D's Washington GIS, Pilot Project Final Report, dated June 30, 1997, this conflation will normally be performed manually.
Step 5 D&D will overlay the georeferenced SIS files over 1995 digital orthophotos and copies of the 1999 planimetric mapping provided by EDI to ensure that the new SIS files satisfy positional accuracy requirements.
Step 6 D&D will deliver one set of ARC/INFO export files (.e00) on CD-ROM to NCPC and will conduct a demonstration, on DPW equipment (PC ArcView), that the current INFO attributes work with the revised streetcenterline file coverage.
Step 7 D&D will conduct on-site field verification surveys (1) direction (2) street name, (3) address ranges for each street segment between cross-streets, (4) number of lanes, (5) directionality of lane, and (6) lane usage.
Step 8 Addition of streets not digitized by EDMD.
Step 9 Correction of address ranges where streets are bisected by added streets.
Step 10 Correction of other SIS data errors observable from "windshield surveys."
Step 11 Provision of discrepancy lists, to NCPC, where SIS street names differ from those posted on street signs. D&D will not change the SIS files to match street signs that are verified in the field.

Process_Date: 1999

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Dewberry Davis, LLC

Contact_Address:

Address_Type: mailing and physical address

Address: 8401 Arlington Blvd.

City: Fairfax

State_or_Province: VA

Postal_Code: 22031

Country: USA

Hours_of_Service: Regular office hours

Process_Step:

Process_Description:

District Department of Transportation (DDOT) Spatial Database System Division street database system moved into an enterprise environment, namely the Transportation Enterprise Asset Management System (TEAMS), in which GIS is a key component. The street spatial database is designed based on an enterprise database management system (Oracle and ArcSDE), using ESRI's geodatabase technology. The new street spatial data model adopts object-oriented data modeling methodology, and follows guidelines of ESRI's UNETRANS data model (ArcGIS Transportation Data Model). The new data model integrates GIS with transportation asset management and business processes within DDOT by making asset data spatial enabled using linear referencing system (LRS) and implements the new topology technology in ArcGIS 8.3 for maintaining the spatial database with shared geometries.
DDOT constructed a public, readable version of the full Street Spatial Database containing various views for the centerlines and related data. OCTO staff related the centerline view feature class (RoadwaySegView) with the following tables (keys): streetcode_view (stcode), streetnamelist_view (streetid), streettype_view (sttypeid), and quadrant_view (quadcode). This pulled over the street names, types, and quadrants. Staff then related the roadway segments to the streetsegment_view feature class, on sourceid, to pull over the ownership, functional class, and national highway system (nhs) attributes. Then, staff created the ST_NAME attribute which combines street name with type into one field for labelling. Various visual checks were done on functional class, street name, quadrant, and other items to ensure the relates worked using the key fields.

Source_Used_Citation_Abbreviation: C:\OCTOGIS\MetadataData\SDE.SISSCLN.xml

Process_Date: 12/13/05

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Office of the Chief Technology Officer

Contact_Person: GIS Data Coordinator

Contact_Address:

Address_Type: mailing and physical address

Address: 441 4th St NW, Suite 930S

City: Washington

State_or_Province: DC

Postal_Code: 20001

Country: USA

Contact_Facsimile_Telephone: 202-727-5660

Contact_Electronic_Mail_Address: [email protected]

Hours_of_Service: 8:30am - 5pm

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\temp\streetsegmentln.xml

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\temp\DCGIS.xml

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\temp\streetsegment.xml

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\temp\streetsegment.xml

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\temp\streetsegmentln.xml

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation:

Server=dcgiscentral.in.dc.gov; Service=5151; User=dcgis_user; Version=SDE.DEFAULT

Process_Date: 20100518

Process_Time: 11112600

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation:

\\ojsfile1\octodata$\GIS\DistributedData_DVD\DistributedDVD_May2010\DCGIS_CENTRAL_052010.gdb

Process_Date: 20100804

Process_Time: 12570000

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\temp\StreetSegmentLn.xml

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\temp\StreetSegmentLn.xml

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation:

Server=dcgiscentral.in.dc.gov; Service=5151; Database=dcgis_user; User=dcgis_user; Version=SDE.DEFAULT

Process_Date: 20101124

Process_Time: 12002000

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\temp\StreetSegmentLn.xml

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\temp\StreetSegmentLn.xml

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\temp\streetsegmentln.xml

Process_Date: 20110506

Process_Time: 15453000

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation:

Server=dcgiscentral.in.dc.gov; Service=5151; User=dcgis_user; Version=SDE.DEFAULT

Process_Date: 20110607

Process_Time: 13254300

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\temp\StreetSegmentLn.xml

Process_Date: 20111110

Process_Time: 09524100

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\temp\StreetSegmentLn.xml

Process_Date: 20111110

Process_Time: 10131400

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation:

Server=dcgiscentral.in.dc.gov; Service=5151; User=dcgis_user; Version=SDE.DEFAULT

Process_Date: 20111110

Process_Time: 15031300

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\DOCUME~1\fieldm\LOCALS~1\Temp\xml80D.tmp

Process_Date: 20120131

Process_Time: 16272400

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\temp\streetsegment.xml

Process_Date: 20120406

Process_Time: 11375100

Cloud_Cover: 0

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: 0

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: State Plane Coordinate System

State_Plane_Coordinate_System:

SPCS_Zone_Identifier: 1900

Lambert_Conformal_Conic:

Standard_Parallel: 38.300000

Standard_Parallel: 39.450000

Longitude_of_Central_Meridian: -77.000000

Latitude_of_Projection_Origin: 37.666667

False_Easting: 400000.000000

False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.000063

Ordinate_Resolution: 0.000063

Planar_Distance_Units: meters

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:

Altitude_Datum_Name: North American Vertical Datum of 1988

Altitude_Resolution: 1.000000

Altitude_Distance_Units: Meters

Altitude_Encoding_Method:

Explicit elevation coordinate included with horizontal coordinates

Depth_System_Definition:

Depth_Datum_Name: Mean sea level

Depth_Resolution: .01

Depth_Distance_Units: Meters

Depth_Encoding_Method: Implicit coordinate

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: DCGIS.StreetSegmentLn

Attribute:

Attribute_Label: FROMADDRESSRIGHTTHEO

Attribute_Definition: From address low right theoretical range

Attribute:

Attribute_Label: TOADDRESSRIGHTTHEO

Attribute_Definition: To address high theoretical range

Attribute:

Attribute_Label: ENDMEASURE

Attribute_Definition: end measure

Attribute:

Attribute_Label: SHAPE

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: SEGMENTTYPE

Attribute_Definition: street centerline type

Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.

Attribute:

Attribute_Label: REGISTEREDNAME

Attribute_Definition: Registered Name of the centerline

Attribute:

Attribute_Label: STREETTYPE

Attribute_Definition: Street Type

Attribute:

Attribute_Label: SOURCEID

Attribute_Definition: Source Identifier

Attribute:

Attribute_Label: QUADRANT

Attribute_Definition: Quandrant Name

Attribute:

Attribute_Label: STREETSEGID

Attribute_Definition: Street Segment unique identifier

Attribute:

Attribute_Label: TOADDRESSLEFTTHEO

Attribute_Definition: to address high left theoretical range

Attribute:

Attribute_Label: UPDATETIMESTAMP

Attribute_Definition: update time stamp for the feature

Attribute:

Attribute_Label: DIRECTIONALITY

Attribute_Definition: directionality of street centerline

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: FROMADDRESSLEFTTHEO

Attribute_Definition: from address low left theoretical range

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: OBJECTID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: FROMNODEID

Attribute_Definition: from node id

Attribute:

Attribute_Label: TONODEID

Attribute_Definition: to node id

Attribute:

Attribute_Label: STREETID

Attribute_Definition: Street identifier for street name

Attribute:

Attribute_Label: BEGINMEASURE

Attribute_Definition: being measure

Attribute:

Attribute_Label: SHAPE.LEN

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: D.C. Office of the Chief Technology Officer

Contact_Person: GIS Data Coordinator

Contact_Address:

Address_Type: mailing and physical address

Address: 441 4th St NW, Suite 930 South

City: Washington

State_or_Province: DC

Postal_Code: 20001

Country: USA

Contact_Facsimile_Telephone: (202) 727-5660

Contact_Electronic_Mail_Address: [email protected]

Hours_of_Service: 8:30 am - 5:00 pm

Resource_Description: Downloadable Data

Distribution_Liability:

Acknowledgment of the DC Geographic Information Systems Program (DC GIS). The District of Columbia Government makes no claims as to the completeness, accuracy or content of any data contained hereon, and makes no representation of any kind, including, but not limited to, the warranty of the accuracy or fitness for a particular use, nor are any such warranties to be implied or inferred with respect to the information or data furnished herein.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Transfer_Size: 10.249

Ordering_Instructions:

Most DC GIS datasets can be downloaded from "<http://dcgis.dc.gov>" on the data center page. Orders can also be made by contacting OCTO GIS at "[email protected]", especially for datasets not available for download.

Metadata_Reference_Information:

Metadata_Date: 20131227

Metadata_Review_Date: 05/09/05

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: D.C. Office of the Chief Technology Officer

Contact_Person: GIS Data Coordinator

Contact_Address:

Address_Type: mailing and physical address

Address: 441 4th St NW, Suite 930 South

City: Washington

State_or_Province: DC

Postal_Code: 20001

Country: USA

Contact_Voice_Telephone:

REQUIRED: The telephone number by which individuals can speak to the organization or individual.

Contact_Facsimile_Telephone: (202) 727-5660

Contact_Electronic_Mail_Address: [email protected]

Hours_of_Service: 8:30 am - 5:00 pm

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: None

Metadata_Use_Constraints: None

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile