Traffic Sections 2025, Washington State Department of Transportation

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Publication_Date: 20260708
Title:
Traffic Sections 2025, Washington State Department of Transportation
Geospatial_Data_Presentation_Form: vector digital data
Description:
Abstract:
2025 estimated Annual Average Daily Traffic volumes along the state highway system. Data represents all directions of travel for the given roadway segment.
Purpose:
To fulfill federal reporting requirements and help meet departmental point-specific traffic information needs.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20250101
Beginning_Time: unknown
Ending_Date: 20251231
Ending_Time: unknown
Currentness_Reference: Temporal extent of dataset
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Annually
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -124.674393
East_Bounding_Coordinate: -116.861321
North_Bounding_Coordinate: 49.042512
South_Bounding_Coordinate: 45.504794
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: AADT
Theme_Keyword: Annual Average Daily Traffic
Theme_Keyword: Traffic
Theme_Keyword: Traffic Volume
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: transportation
Access_Constraints: None
Use_Constraints:
The Washington State Department of Transportation shall not be liable for any activity involving this data with regard to lost profits or savings or any other consequential damages; or the fitness for use of the data for a particular purpose; or the installation of the data, its use, or the results obtained. The data is appropriate for project scoping purposes. It is also appropriate, for (a) analyzing collision rates on stretches of roadway that are at minimum several miles in length and (b) design projects that do not include turning movement analyses.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Transportation Data, GIS, and Modeling Group
Contact_Person: C. Slade Dillard
Contact_Position: Travel Analyst
Contact_Voice_Telephone: (360) 570-2481
Contact_Electronic_Mail_Address: christian.dillard@wsdot.wa.gov
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Transportation Data, GIS, and Modeling Group
Contact_Person: C. Slade Dillard
Contact_Position: Travel Analyst
Contact_Voice_Telephone: (360) 570-2481
Contact_Electronic_Mail_Address: christian.dillard@wsdot.wa.gov
Native_Data_Set_Environment: Version 6.2 (Build 9200) ; Esri ArcGIS 10.9.1.28388
Data_Quality_Information:
Completeness_Report:
Data is only provided for Mainlines, Spurs, Couplets, Alternate Routes, Reversible Lanes and Grade Separated HOV Lanes. These are the related roadway types for which traffic data is reported to the federal government through the Highway Performance Monitoring System.
Lineage:
Process_Step:
Process_Description:
Traffic and roadway data from WSDOT's Datamart, was loaded to software with code for (a) consolidating contiguous segments with the same AADT and (b) dividing segments at locations where the roadway changes from one direction of travel to two or from two directions of travel to one. Data queried on process date.
Process_Date: 20260617
Process_Step:
Process_Description:
Placed extracted datasets onto the 2025 Linear Referencing System (LRS) using route events. Data was placed on the Increasing 24k LRS except for roadway segments with no lanes carrying traffic in the increasing direction of mileposting. These segments were placed on the Decreasing 24k LRS. Those two datasets were merged together to produce the final result.
Process_Date: 20260617
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: 4815
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: NAD 1983 HARN StatePlane Washington South FIPS 4602 Feet
Lambert_Conformal_Conic:
Standard_Parallel: 45.83333333333334
Standard_Parallel: 47.33333333333334
Longitude_of_Central_Meridian: -120.5
Latitude_of_Projection_Origin: 45.33333333333334
False_Easting: 1640416.666666667
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.0003280833333333333
Ordinate_Resolution: 0.0003280833333333333
Planar_Distance_Units: foot_us
Geodetic_Model:
Horizontal_Datum_Name: D North American 1983 HARN
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: TrafficSections
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: Location
Attribute_Definition:
Text description of the segment boundaries in terms of the State Route Milepost and Ahead/Back Indicator of physical features of the roadway (e.g., an intersection or bridge).
Attribute:
Attribute_Label: AADT
Attribute_Definition:
The annual average daily traffic figure calculated by the WSDOT Travel and Analysis Branch for the roadway location and year indicated.
Attribute:
Attribute_Label: RouteIdentifier
Attribute_Definition:
A unique Route identifier to identify a route (City, County, State, Tribal, Forest) in any given data set. For State Routes, Route IDs are assigned by WSDOT's GIS and Roadway Data Office
Attribute_Definition_Source: WSDOT Application - DOTS
Attribute:
Attribute_Label: StateRouteNumber
Attribute_Definition:
The number assigned to the State Route and enacted into law by the Washington State Legislature
Attribute_Definition_Source: WSDOT Application - DOTS
Attribute:
Attribute_Label: RelatedRouteType
Attribute_Definition:
A Code that represents a classification of a route associated with a mainline state route, examples include: Couplet, Spur, Alternate Route, etc. 
Attribute_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value_Definition: Mainline
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AR
Enumerated_Domain_Value_Definition: Alternate Route
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CD
Enumerated_Domain_Value_Definition: Collector - Distributor - Decreasing
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CI
Enumerated_Domain_Value_Definition: Collector - Distributor - Increasing
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CO
Enumerated_Domain_Value_Definition: Couplet
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: FD
Enumerated_Domain_Value_Definition: Frontage Road - Decreasing
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: FI
Enumerated_Domain_Value_Definition: Frontage Road - Increasing
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: FT
Enumerated_Domain_Value_Definition: Ferry Terminal
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: FS
Enumerated_Domain_Value_Definition: Ferry Ship (boat)
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: HD
Enumerated_Domain_Value_Definition: Grade separated HOV Lane - Decreasing
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: HI
Enumerated_Domain_Value_Definition: Grade separated HOV Lane - Increasing
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: LX
Enumerated_Domain_Value_Definition: Crossroad within Interchange
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: PR
Enumerated_Domain_Value_Definition: Proposed Route
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: RL
Enumerated_Domain_Value_Definition: Reversible Lane
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: SP
Enumerated_Domain_Value_Definition: Spur
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: TB
Enumerated_Domain_Value_Definition: Transitional Turnback
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: TR
Enumerated_Domain_Value_Definition: Temporary Route
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: UC
Enumerated_Domain_Value_Definition: Under Construction
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: P1-P9
Enumerated_Domain_Value_Definition:
Off Ramp - Increasing, P4 contained only within Urban Interchanges
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Q1-Q9
Enumerated_Domain_Value_Definition:
On Ramp - Increasing, Q4 contained only within Urban Interchanges
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: R1-R9
Enumerated_Domain_Value_Definition:
Off Ramp - Decreasing, R4 contained only within Urban Interchanges
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: S1-S9
Enumerated_Domain_Value_Definition:
On Ramp - Decreasing, S4 contained only within Urban Interchanges
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: U1-U9
Enumerated_Domain_Value_Definition: Weigh Station Ramp - Increasing
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: W1-W9
Enumerated_Domain_Value_Definition: Weigh Station Ramp - Decreasing
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: X1-X9
Enumerated_Domain_Value_Definition: Safety Rest Area Ramp - Increasing
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Y1-Y9
Enumerated_Domain_Value_Definition: Safety Rest Area Ramp - Decreasing
Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS
Attribute:
Attribute_Label: BeginAccumulatedRouteMile
Attribute_Definition:
The measure of a point at the beginning of a roadway segment along the length of a route in which the distance is measured as an accrual of mileage from the beginning of the route. The Accumulated Route Mile Begin may define the starting point for a business activity or measurement. For example, project location or roadside event.
Attribute_Definition_Source: WSDOT Application - DOTS
Attribute:
Attribute_Label: EndAccumulatedRouteMile
Attribute_Definition:
The measure of a point at the end of a roadway segment along the length of a route in which the distance is measured as an accrual of mileage from the beginning of the route. The Accumulated Route Mile Begin may define the starting point for a business activity or measurement. For example, project location or roadside event.
Attribute_Definition_Source: WSDOT Application - DOTS
Attribute:
Attribute_Label: RelatedRouteQualifier
Attribute_Definition:
A reference used to uniquely identify the physical location of the State Route Related Route Type. The State Route Related Route Qualifier can be based on a State Route Milepost, street name, city, or other distinguishing geographic reference.
Attribute_Definition_Source: WSDOT Application - DOTS
Attribute:
Attribute_Label: SymbolCode
Attribute_Definition: A code used for cartographic symbolization
Attribute_Definition_Source: WSDOT ITD, Data Resource Management Office
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: IS
Enumerated_Domain_Value_Definition: Interstate Route
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: US
Enumerated_Domain_Value_Definition: US Route
Enumerated_Domain:
Enumerated_Domain_Value: RA
Enumerated_Domain_Value_Definition: Ramp
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: SR
Enumerated_Domain_Value_Definition: State Route
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: LC
Enumerated_Domain_Value_Definition: Local Road either frontage road or Local access approach.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: FT
Enumerated_Domain_Value_Definition: Ferry Terminal
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: RA
Enumerated_Domain_Value_Definition: Ramp
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: PR
Enumerated_Domain_Value_Definition: Proposed Route
Attribute:
Attribute_Label: SHAPE
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: GlobalID
Attribute_Definition: Automatically assigned universal unique identifier.
Attribute:
Attribute_Label: LRSDate
Attribute_Definition:
The Linear Referencing System date that this record is using for location.
Attribute_Definition_Source: WSDOT Application - DOTS
Attribute:
Attribute_Label: ReportingYear
Attribute_Definition: The calendar year of the traffic data being reported.
Attribute:
Attribute_Label: Shape.STLength()
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Washington State Department of Transportation, Office of Information Technology
Contact_Person: Jordyn Mitchell
Contact_Position: GIS Database Administrator
Contact_Electronic_Mail_Address: mitchejo@wsdot.wa.gov
Distribution_Liability:
The Washington State Department of Transportation shall not be liable for any activity involving this data with regard to lost profits or savings or any other consequential damages; or the fitness for use of the data for a particular purpose; or the installation of the data, its use, or the results obtained.
Standard_Order_Process:
Fees: none
Ordering_Instructions:
Download individual data sets from https://gisdata-wsdot.opendata.arcgis.com
Metadata_Reference_Information:
Metadata_Date: 20260706
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Transportation Data, GIS, and Modeling Group
Contact_Person: C. Slade Dillard
Contact_Position: Travel Analyst
Contact_Voice_Telephone: (360) 570-2481
Contact_Electronic_Mail_Address: christian.dillard@wsdot.wa.gov
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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