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Master Plan of Highways

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 expressway.  Last updated, 4/20/17 for a plan amendment in the Santa Clarita Valley.

Data can be downloaded here:

Download Shapefile / Layer File (.zip)


Using GIS Data on this site

GIS Data downloaded from this site generally requires GIS software to view. Click here for a list of GIS Data Viewers

GIS data available on this website is provided AS IS - please read the GIS Data Portal Terms of Use

Data Field Descriptions
  • NAMEA_ALF - Full Street Name (character)
  • SYMBOL – Numeric Value for symbolizing Highway Plan types
  • HCODE – Code for Highway plan type (used in .lyr file)
  • HCODE_NAME – Name of Highway Plan type

GIS Source Information
Feature Dataset Name (if applicable):
Reference Date: 2009
Accuracy: Thomas Brothers
Update Frequency: As Needed
Access Constraints:None

Contact Information
Nick Franchino
GIS Manager
County of Los Angeles
Regional Planning Department
320 W. Temple St.
Mailstop Room 1383
Los Angeles, CA 90012

2 comments to Master Plan of Highways

  • The files included here are GIS data files (in shapefile format). They are meant to be used with GIS software. See above for information about “Using GIS Data on this Site”.
    If you’d like to see the layers with our other GIS data, then use one of our GIS web mapping applications like GIS-NET3 or GP-NET. You can pan and zoom and turn layers on and off. They are available from this site: http://planning.lacounty.gov/gis/interactive

  • donnduff

    Some of us can’t seem to open these zip files. Is there another way you can make these files available, like Adobe Reader?

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