I-5 has a closure reported as of 2026-08-18T09:30Z, source: Caltrans; source freshness: healthy; coverage: full.

Fetch https://api-staging.mountainswitch.co/v1/routes/I-5/summary?jurisdiction=US-CA for structured route-summary detail.

## Coverage

This page shows full-road conditions reported by MountainSwitch's listed I-5 sources, including District 7 and District 6 feed rows outside the reviewed Grapevine / Tejon Pass spans.

Those route-wide reports don't expand the Grapevine / Tejon Pass answer. That answer covers the two county-strict I-5 intervals from Parker Road to the Los Angeles / Kern county line and from the Kern county reset to the I-5 / SR-99 separation at Wheeler Ridge; Lake Hughes Road and Grapevine Road remain the northbound and southbound operational gates. I-5 rows outside those spans remain route-level only. SR-58, SR-166, SR-46, SR-41, and US-101 are detour context only and never part of the Grapevine / Tejon Pass answer.

MountainSwitch does not determine whether a route should be driven. Verify with Caltrans before traveling.