CSV

HISTORICAL USAGE NAMES

This table lists Historical Usage Names on the California State Highway System alphabetically by facility name. Historical routes are named by historical significance or local usage. Some Historical Usage Names may traverse multiple present day routes and Caltrans districts. Routes and districts are listed in order of travel separated by commas.

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Data dictionary

Field definitions supplied by the publishing agency in CKAN.

Column	Type	Label	Description
NAME	text	NAME	—
ROUTE NO	text	ROUTE NO	—
DISTRICT	text	DISTRICT	—
HOW NAMED	text	HOW NAMED	—
FROM	text	FROM	—
TO	text	TO	—

Resource details

Format	CSV
Size	4.3 KB
Rows	54
Last updated	Sep 29, 2026
Part of	2023 Named Freeways, Highways, Structures and Other Appurtenances in California

Other resources in this dataset

CKAN Data API

Access resource data through the CKAN DataStore API. The examples below use this resource's ID.

Endpoints

The Data API provides these actions. Creating or updating records requires appropriate permissions; the query actions read public DataStore records.

Create	`https://ckan.cdt.dev.datopian.com/api/3/action/datastore_create`
Update / insert	`https://ckan.cdt.dev.datopian.com/api/3/action/datastore_upsert`
Query	`https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search`
Query via SQL	`https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search_sql`

Query examples

First five results

"https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search?resource_id=3128f555-6abe-4e42-8d68-fbf3e2e2614c&limit=5"

Results containing "jones"

"https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search?resource_id=3128f555-6abe-4e42-8d68-fbf3e2e2614c&q=jones"

SQL query

"https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search_sql?sql=SELECT%20%2A%20FROM%20%223128f555-6abe-4e42-8d68-fbf3e2e2614c%22%20LIMIT%205"

SQL queries depend on whether SQL search is enabled by the portal.

OData query

Use the resource's OData URL and its field names for paging, selecting columns, or filtering rows.

ODATA_RESOURCE_URL?$top=5
ODATA_RESOURCE_URL?$skip=5&$top=5
ODATA_RESOURCE_URL?$select=FIELD_NAME&$filter=FIELD_NAME eq 'VALUE'

Replace ODATA_RESOURCE_URL, FIELD_NAME, and VALUE with the details for the selected resource. See the OData query options guide (opens in a new tab) for more examples.

Use the API in code

JavaScript (JSONP)

var data = { resource_id: '3128f555-6abe-4e42-8d68-fbf3e2e2614c', limit: 5, q: 'jones' };
$.ajax({
  url: 'https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search',
  data: data,
  dataType: 'jsonp',
  success: function (response) {
    console.log(response.result.total, response.result.records);
  }
});

Python

import json
from urllib.request import urlopen

url = 'https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search?resource_id=3128f555-6abe-4e42-8d68-fbf3e2e2614c&limit=5'
with urlopen(url) as response:
    result = json.load(response)['result']
print(result['total'], result['records'])

For parameters and response fields, see the CKAN DataStore documentation (opens in a new tab).