CACrown ArchivesThe cinema collection
Menu
Research dossier · General Reference

Business routes of Interstate 8

business routes of an Interstate Highway

Cross-disciplinary reference desk with index cards, atlas, dictionary and catalogue
General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJan 18, 2026
Entity authorityQ13530634 ↗
Source-derived summary

There are five business routes of Interstate 8 (I-8).

The portions of the I-8 business routes through California are mostly unsigned. All Interstate business routes in California are assigned by the California Department of Transportation (Caltrans), but are not maintained by Caltrans unless they overlay other routes of the state highway system. Local authorities may request route assignment from the Caltrans Transportation System Information Program, and all requests require approval of the executive committee of the American Association of State Highway and Transportation Officials (AASHTO).

El Cajon loop

Business Loop 8 (I-8 Bus.) begins as El Cajon Boulevard at an interchange with I-8, loosely paralleling the freeway on the northern side. The loop passes through Bostonia and Lakeview before ending at the Lake Jennings Park Road interchange with I-8.

Major intersections

The entire route is in San Diego County.

Alpine loop

Business Loop 8 (I-8 Bus.) in Alpine spanned from I-8 exit 30 to exit 33 and was mostly former US 80 along Alpine Drive.

El Centro loop

Business Loop Interstate 8 (I-8 Bus.) is a business loop route that diverges from I-8 in El Centro, California, to pass through the downtown area. I-8 Bus.

Editorial summary

“Business routes of Interstate 8” enters the record as business routes of an Interstate Highway. Crown Archives preserves that source wording while asking what Business, routes and Interstate can confirm, complicate or overturn.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current 195-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. Its strongest next move is a source search built around Business, routes and Interstate.
Editorial analysis

Why this record matters

“Business routes of Interstate 8” is worth following because a concise public description often conceals a longer documentary argument. Here, Business, routes and Interstate provides the most credible route into that argument.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Jan 18, 2026. The linked authority identifier is Q13530634. None of the 0 selected statements returned an explicit reference.

Critical limits

The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “Business routes of Interstate 8”, its source revision and the description used here.
  2. Expand the search: follow Business routes of Interstate 8 primary sources, Business routes of Interstate 8 archive and Business research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Business routes of Interstate 8”?
  2. Which institution is responsible for the underlying evidence?
  3. What terminology or title could unlock a more precise catalogue search?
Subject index

Search terms from this dossier

Source & attribution

This entry incorporates text from “Business routes of Interstate 8” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.