National Highway System (NHS), Washington State Department of Transportation

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: Washington State Department of Transportation

Publication_Date: 20251001

Title:

National Highway System (NHS), Washington State Department of Transportation

Geospatial_Data_Presentation_Form: vector digital data

Publication_Information:

Publication_Place: Tumwater, Washington

Publisher: Washington State Department of Transportation

Other_Citation_Details: See LRS_Date field for date of data

Description:

Abstract:

This is an extract from the TRansportation Information and Planning Support (TRIPS) mainframe database for National Highway System (NHS) Route events along State Routes. State Route identifiers and locations based on State Route Mileposts and Accumulated Route Mileage are also included for geographic reference and for use with the Washington State Department of Transportation's 24k and 500k Linear Referencing Systems. Please direct questions about this dataset to: TransportationGISDataSteward@wsdot.wa.gov.

Purpose:

To enable Geographic Information System users to more easily display and analyze a subset of the data contained in the State Highway Log in conjunction with the Washington State 24k and 500k Linear Referencing Systems.

Supplemental_Information:

National Highway System (NHS) Route events depict the FHWA approved National Highway System for Washington State Highways as reported in the Highway Performance Monitoring System (HPMS). For this update, all approved NHS routes for calendar year (See note below and LRS_Date field) are included. Additional information can be found in the "State Highway Log", Electronic State Highway Log Data Definitions.doc, and the DOTarmcalc01.txt through the Point of Contact. NOTE: Starting with this update, a field was added (LRS_Date) and populated with the date the data was last updated. Reference to this field will be used throughout the metadata, instead of actually filling out date fields, in an effort to streamline the updating of metadata as part of automating the publication of updated datasets.

Time_Period_of_Content:

Time_Period_Information:

Multiple_Dates/Times:

Single_Date/Time:

Calendar_Date: 20241231

Single_Date/Time:

Calendar_Date: 20241231

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: Annually

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -124.508077

East_Bounding_Coordinate: -116.866002

North_Bounding_Coordinate: 49.023346

South_Bounding_Coordinate: 45.510083

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: Highway Data

Theme_Keyword: TRIPS

Theme_Keyword: State Route Data

Theme_Keyword: State highway Log

Theme_Keyword: Road Log

Theme_Keyword: National Highway System

Theme_Keyword: NHS

Access_Constraints: None

Use_Constraints:

The data contained within the State Highway Log is collected and updated using contract plans, field reviews and information provided by numerous WSDOT Regional and Headquarters offices as well as other county and city sources. Due to the diverse sources of this data, no accuracy statement is available. Also, this data may have changed since the publication date. If you find an error with this data and can provide updated information, please contact the GIS and Roadway Data Office (GRDO) at (360) 570-2361 or fax (360) 570-2400. We are continuously looking for sources to provide us with quality information.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Washington State Department of Transportation

Contact_Position: TransportationGISDataSteward@wsdot.wa.gov

Contact_Address:

Address_Type: physical

Address: 7345 Linderson Way SW

City: Tumwater

State_or_Province: WA

Postal_Code: 98501

Country: US

Contact_Electronic_Mail_Address: TransportationGISDataSteward@wsdot.wa.gov

Data_Set_Credit: Washington State Department of Transportation

Native_Data_Set_Environment: Version 6.2 (Build 9200) ; Esri ArcGIS 10.9.1.28388

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Values were obtained from the Transportation Information and Planning Support (TRIPS) database.

Completeness_Report:

The data contained within the State Highway Log is collected and updated using contract plans, field reviews and information provided by numerous WSDOT Regional and Headquarters offices as well as other county and city sources over the course of a year. This data may have changed since the publication date. Only those records that have a SRID (State Route Identifier) found in the Washington State Highways at 24K Linear Referencing System can be graphically placed as events. SRIDs that have been added or revised since the completeness date of the LRS will not place, nor will SRIDs for road features not carried by the LRS.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report: Positional accuracy of this data set has not been determined

Lineage:

Process_Step:

Process_Description:

Data originated from the TRansportation Information and Planning Support (TRIPS) mainframe database which in turn then feeds into a sequel database which offers greater flexibility in reporting. The information is then extracted using business intelligence software and exported into the Excel format.

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Washington State Department of Transportation

Contact_Position: TransportationGISDataSteward@wsdot.wa.gov

Contact_Address:

Address_Type: mailing

Address: PO Box 47380

City: Olympia

State_or_Province: WA

Postal_Code: 98504-7380

Country: US

Contact_Electronic_Mail_Address: TransportationGISDataSteward@wsdot.wa.gov

Process_Step:

Process_Description:

The excel spreadsheet was used to place events on the 24k Increasing, Decreasing, Ramps, and FTProposed route feature classes. These feature classes were merged into one file, duplicates were removed and attributes updated as needed. Four old fields were removed.

Process_Date: 20250901

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Washington State Department of Transportation

Contact_Position: TransportationGISDataSteward@wsdot.wa.gov

Contact_Address:

Address_Type: physical

Address: 7345 Linderson Way SW

City: Tumwater

State_or_Province: WA

Postal_Code: 98501-7384

Country: US

Contact_Electronic_Mail_Address: TransportationGISDataSteward@wsdot.wa.gov

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: 2796

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: NatHwySysState

Entity_Type_Definition:

National Highway System (NHS) Route events depict the FHWA approved National Highway System for Washington State Highways as reported in the Highway Performance Monitoring System (HPMS).

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: 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 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:

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: BeginStateRouteMilepost

Attribute_Definition:

A logical number, assigned by a Linear Referencing Method, to the beginning of a roadway segment along a State Route. This value will always match the Accumulated Route Mileage value unless there has been a realignment or jurisdictional transfer which changes the length of a route.

Attribute_Definition_Source: WSDOT Application - DOTS

Attribute:

Attribute_Label: EndStateRouteMilepost

Attribute_Definition:

A logical number, assigned by a Linear Referencing Method, to the end of a roadway segment along a State Route. This value will always match the Accumulated Route Mileage value unless there has been a realignment or jurisdictional transfer which changes the length of a route.

Attribute_Definition_Source: WSDOT Application - DOTS

Attribute:

Attribute_Label: BeginAheadBackIndicator

Attribute_Definition:

An indicator that denotes if the Begin Milepost is within a back mileage equation area. A back mileage equation area occurs when a segment of a route is added at any point other than the end of an existing route, or when a realignment occurs

Attribute_Definition_Source: WSDOT Application - DOTS

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value_Definition: Implied A or Ahead

Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: B

Enumerated_Domain_Value_Definition: Back or duplicate of a milepost value "ahead" on the route.

Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS

Attribute:

Attribute_Label: EndAheadBackIndicator

Attribute_Definition:

An indicator that denotes if the End Milepost is within a back mileage equation area. A back mileage equation area occurs when a segment of a route is added at any point other than the end of an existing route, or when a realignment occurs 

Attribute_Definition_Source: WSDOT Application - DOTS

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value_Definition: Implied A or Ahead

Enumerated_Domain_Value_Definition_Source: WSDOT Application - DOTS

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: B

Enumerated_Domain_Value_Definition: Back or duplicate of a milepost value "ahead" on the route.

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: InventoryDirection

Attribute_Definition:

A code that represents whether the transportation asset or project is located in the (I) Increasing Milepost Direction of Travel, (D) Decreasing Milepost Direction of Travel or, (B) Both Milepost Directions of Travel.

Attribute_Definition_Source: WSDOT Application - DOTS

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: i

Enumerated_Domain_Value_Definition: Increasing

Enumerated_Domain:

Enumerated_Domain_Value: d

Enumerated_Domain_Value_Definition: Decreasing

Enumerated_Domain:

Enumerated_Domain_Value: b

Enumerated_Domain_Value_Definition: Both

Attribute:

Attribute_Label: SHAPE

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: Esri

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

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: GlobalID

Attribute_Definition: ESRI field used for internal purposes.

Attribute:

Attribute_Label: Shape.STLength()

Overview_Description:

Entity_and_Attribute_Overview:

This tabular data can be used with the State Route Linear Referencing System geospatial data set to depict the locations of the National Highway System (NHS) routes along Washington's State Routes.

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: 20250929

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Washington State Department of Transportation

Contact_Position: TransportationGISDataSteward@wsdot.wa.gov

Contact_Address:

Address_Type: physical

Address: 7345 Linderson Way SW

City: Tumwater

State_or_Province: WA

Postal_Code: 98501-7384

Country: US

Contact_Electronic_Mail_Address: TransportationGISDataSteward@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