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Browse destinations, routes, system status, documentation, and legal links.

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Destinations

Mountain hubs across California.

Routes

Road conditions, restrictions, and closures.

The site

Status

Is MountainSwitch working?

API Docs

Public endpoints and schemas.

About Us

The story behind the data.

Big Bear · SR-18 road conditions

Checking current route conditions.

MountainSwitch Know before you go.

Conditions change fast. We republish official source data, so always verify with on-the-ground signs, law enforcement, and weather before you drive.