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County Route Shield

San Diego
County Sign Route S4

[Click here for a key to the symbols used. Some county routes were constructed with federal funds. These routes are indicated as FAP (Federal Aid Primary), FAU (Federal Aid Urban), or FAS (Federal Aid Secondary). If no funding source is shown, no federal funds were used. Note that while some segments seem to have the same attributes, they may differ in the county-local road number assigned to the segment, or in the Caltrans Map Sheet number.]

Routing Routing

  1. Cty Rte S4Poway Road in San Diego from I-15 to the San Diego city limits (FAU, 2.15 mi)

  2. Poway Road from the San Diego city limits to the San Diego urban limits (FAU, 4.22 mi)

  3. Poway Road from the San Diego urban limits to Route 67 (FAS, 2.63 mi)

History and Signage Information History and Signage Information

This route was defined in 1959.

Status Status

Total mileage: 9.00 mi.

Acronyms and Explanations:

Back Arrow CR S3 Forward Arrow CR S5

© 1996-2020 Daniel P. Faigin.
Maintained by: Daniel P. Faigin <>.