Name: Master Plan of Highways

Display Field: NAME_ALF

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: The Master Plan of Highways was originally developed by the County of Los Angeles Department of Public Works (DPW); it designates roadways in Los Angeles County by their planned capacity. Categories include major highway, secondary highway, limited secondary highway, parkway, and expresswayUPDATE HISTORY:12/27/12 - for latest updates reflected in the Santa Clarita Valley Area Plan--went into effect on this day.6/17/15 - for latest updated reflected in the Antelope Valley Area Plan, adopted by the Board of Supervisors on 6/16/15.11/5/15 - for latest updates reflected in the General Plan 2035, adopted by the Board of Supervisors on 10/6/15 - effective on this day.1/10/17 - for removal of Limited Secondary Highway near Castaic along Sloan Canyon. Adopted by BOS on 12/20/16 (link to BOS resolution is here).5/30/19 - for the adoption of the Centennial Specific Plan (which became effective on this day). A link to the BOS resolution is here.4/9/25 - for the adoption of the South Bay Area Plan, removal of Del Amo Blvd between Normandie Ave and Vermont Ave.12/11/25 - Due to a court order, Los Angeles County has vacated all approvals for the Centennial Specific Plan and suspended all project activities until CEQA deficiencies are corrected. Therefore, this GIS layer reflects the data as it was adopted by the Antelope Valley Area Plan in 2015 (Centennial was adopted in 2019).

Copyright Text: Los Angeles County Department of Regional Planning GIS Section

Default Visibility: false

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 120000.0

Max Scale: 0.0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: 6275462.837734193
YMin: 1715873.7496319413
XMax: 6666505.981827438
YMax: 2121184.4833001792
Spatial Reference: 102645  (2229)  LatestVCSWkid(0)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: HCODE_NAME
Field 2: N/A
Field 3: N/A
Field Delimiter: ,
Default Symbol:
N/A
Default Label: N/A
UniqueValueInfos:
• Value: EXPRESSWAY - EXISTING
  Label: EXPRESSWAY - EXISTING
  Description: N/A
  Symbol:
  Style: esriSLSSolid
  Color: [178, 178, 178, 255]
  Width: 3
• Value: EXPRESSWAY - PROPOSED
  Label: EXPRESSWAY - PROPOSED
  Description: N/A
  Symbol:
  Style: esriSLSSolid
  Color: [255, 255, 255, 255]
  Width: 3
• Value: LIMITED SECONDARY HIGHWAY - EXISTING
  Label: LIMITED SECONDARY HIGHWAY - EXISTING
  Description: N/A
  Symbol:
  Style: esriSLSSolid
  Color: [0, 0, 0, 255]
  Width: 1
• Value: LIMITED SECONDARY HIGHWAY - PROPOSED
  Label: LIMITED SECONDARY HIGHWAY - PROPOSED
  Description: N/A
  Symbol:
  Style: esriSLSSolid
  Color: [150, 150, 150, 255]
  Width: 4
• Value: PARKWAY - EXISTING
  Label: PARKWAY - EXISTING
  Description: N/A
  Symbol:
  Style: esriSLSSolid
  Color: [215, 215, 215, 255]
  Width: 3
• Value: PARKWAY - PROPOSED
  Label: PARKWAY - PROPOSED
  Description: N/A
  Symbol:
  Style: esriSLSSolid
  Color: [255, 255, 255, 255]
  Width: 3
• Value: MAJOR HIGHWAY - EXISTING (8 lanes)
  Label: MAJOR HIGHWAY - EXISTING (8 lanes)
  Description: N/A
  Symbol:
  Style: esriSLSSolid
  Color: [197, 0, 255, 255]
  Width: 2
• Value: MAJOR HIGHWAY - EXISTING
  Label: MAJOR HIGHWAY - EXISTING
  Description: N/A
  Symbol:
  Style: esriSLSSolid
  Color: [255, 0, 0, 255]
  Width: 2
• Value: MAJOR HIGHWAY - PROPOSED
  Label: MAJOR HIGHWAY - PROPOSED
  Description: N/A
  Symbol:
  Style: esriSLSDash
  Color: [255, 0, 0, 255]
  Width: 2
• Value: SECONDARY HIGHWAY - EXISTING
  Label: SECONDARY HIGHWAY - EXISTING
  Description: N/A
  Symbol:
  Style: esriSLSSolid
  Color: [0, 0, 0, 255]
  Width: 2
• Value: SECONDARY HIGHWAY - PROPOSED
  Label: SECONDARY HIGHWAY - PROPOSED
  Description: N/A
  Symbol:
  Style: esriSLSDash
  Color: [0, 0, 0, 255]
  Width: 2
• Value: FREEWAY - EXISTING
  Label: FREEWAY - EXISTING
  Description: N/A
  Symbol:
  Style: esriSLSSolid
  Color: [230, 152, 0, 255]
  Width: 3
• Value: FREEWAY - PROPOSED
  Label: FREEWAY - PROPOSED
  Description: N/A
  Symbol:
  Style: esriSLSSolid
  Color: [0, 0, 0, 255]
  Width: 3
Transparency: 0
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• TYPE ( type: esriFieldTypeSmallInteger, alias: TYPE )
• NAMEA_ALF ( type: esriFieldTypeString, alias: Road Name, length: 52 )
• NUMBER ( type: esriFieldTypeString, alias: Route, length: 5 )
• HCODE_NAME ( type: esriFieldTypeString, alias: Type Name, length: 40 )
• NO_LANES ( type: esriFieldTypeSmallInteger, alias: NO_LANES )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )

Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

  Iteminfo   Thumbnail   Metadata