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Latest News

Caltrans Considers Alternatives to 'Armoring' 101 Against Sea Level Rise

November 11, 2021

Caltrans is considering a “living shoreline” along U.S. 101 to protect against the tides.

Coastal Commission Approves Eureka-Arcata Highway 101 Corridor Improvement Project

August 7, 2021

Long-planned renovation project for the six-mile stretch of Highway 101 between Eureka and Arcata has been approved

Caltrans Exploring Adaptations for Sea Level Rise

January 15, 2021

Caltrans delivers update on long-term plans to deal with sea level rise on the U.S. 101 corridor between Eureka and Arcata

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Caltrans welcomes you to our online resources to help you stay informed regarding our planning and project efforts in District 1. You can find information regarding our efforts along the Highway 101 Corridor and in each of the 4 counties covered by District 1.

Map of Counties

There are 23 state highways located within District 1. In many of these areas, the State Highway System (SHS) serves as the “main street.” The SHS also provides outlying communities access to emergency services.

To view the locations along the SHS that are the most at-risk due to climate change, click the link below.

Caltrans District 1 Vulnerability Assessment Map