Washington State Department of Transportation’s website, cameras, alerts and mobile apps were knocked out by an extensive power outage on Sunday that took down website and travel information.

By midmorning Monday, some information, including some ferry schedules, was back online, while others, such as traffic cameras, remained down. The website and other tools were fully restored by Monday evening, the agency said.

An alert about the outage was posted on Twitter late Sunday night. WSDOT on Monday said it had been working all night to restore the tools.

For several hours, Twitter appeared to be the only way the state’s transportation system was getting out information.

During the outage, the transportation system posted a list of all the Twitter accounts the agency uses as well as a list of other accounts with traffic information.

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