California freeway exits: what the numbers mean
A report with primary-source links, recorded evidence and translation review, explicit dates and limits on interpretation.
BorderPulse · 2026-11-06
California's freeway exit numbers are based on mileage from the beginning of a route. Caltrans says numbers increase from south to north on north–south routes and from west to east on east–west routes. Caltrans Cal-NExUS exit-numbering guide
Caltrans gives I-5 as a border-region example: exit 1 is just north of Mexico. Its Cal-NExUS page includes exit-number lists organized by highway, providing a reference for the route you plan to use. Caltrans Cal-NExUS exit-numbering guide
Interpretation: Use the highway name alongside the exit number. This mileage-based reference identifies a location; it does not establish whether a ramp is open. Caltrans Cal-NExUS exit-numbering guide
Sources and limits
- Caltrans Cal-NExUS exit-numbering guide: published not stated; verified 2026-11-06T15:59:31.406Z.
The cited sources and dates bound this article. Summaries and translations can miss context; read the linked source for the complete notice and later updates.