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Marin Sonoma Narrows Project Gallery

Image Gallery

Ribbon Cutting October 2025 001 Sign for Olompali State Historic Park, the site for the Marin Sonoma Narrows Project ribbon cutting ceremony on October 3, 2025.
Ribbon Cutting October 2025 002 A group representing the project partners cut the ribbon as part of the Marin Sonoma Narrows ribbon cutting ceremony on October 3, 2025.
Ribbon Cutting October 2025 003 A collection of Caltrans staff pose with the ceremonial scissors at the Marin Sonoma Narrows ribbon cutting ceremony on October 3, 2025.
Ribbon Cutting October 2025 004 David Ambuehl, Acting District Director for Caltrans District 4, speaks at the ribbon cutting ceremony for the Marin Sonoma Narrows Project.
Ribbon Cutting October 2025 005 Executive Director of Transportation Authority of Marin, Anne Richman (left), State Senator and Senate President Pro Tempore Mike McGuire (center), and Representative for California's 2nd Congressional District, Jared Huffman (right), participate in the ribbon cutting ceremony on October 3, 2025.
Gallery Item 001 New lanes on US-101 at San Antonio Road in Marin County.
Gallery Item 002 The new lane on northbound US-101 at San Antonio Road in Marin County.
Gallery Item 003 US-101 and San Antonio Road in northern Marin County.
Gallery Item 004 US-101 near San Antonio Road in Marin County.
Gallery Item 005 US-101 with new lanes added as part of the Marin Sonoma Narrows Project.
Gallery Item 006 Newly opened lanes on US-101 as part of the Marin Sonoma Narrows Project.
Gallery Item 007 Construction as part of the Marin Sonoma Narrows Project. Photograph taken April 2022
Gallery Item 008 Drainage feature installed as part of the Marin Sonoma Narrows Project. Photograph taken April 2022
Gallery Item 009 Construction as part of the Marin Sonoma Narrows Project. Photograph taken April 2022
Gallery Item 010 Construction as part of the Marin Sonoma Narrows Project. Photograph taken April 2022
Gallery Item 011 Construction as part of the Marin Sonoma Narrows Project. Photograph taken April 2022
Gallery Item 012 Construction as part of the Marin Sonoma Narrows Project. Photograph taken April 2022
Gallery Item 013 Construction as part of the Marin Sonoma Narrows Project. Photograph taken April 2022
Gallery Item 014 Construction as part of the Marin Sonoma Narrows Project. Photograph taken November 2021.
Gallery Item 015 Construction as part of the Marin Sonoma Narrows Project. Photograph taken October 2021.
Gallery Item 016 Construction as part of the Marin Sonoma Narrows Project. Photograph taken October 2021.
Gallery Item 017 Construction as part of the Marin Sonoma Narrows Project. Photograph taken April 2021.
Gallery Item 018 A SMART train passes by the construction area for the Marin Sonoma Narrows Project. Photograph taken April 2021
Gallery Item 019 Construction as part of the Marin Sonoma Narrows Project. Photograph taken April 2021.
Gallery Item 020 Construction as part of the Marin Sonoma Narrows Project. Photograph taken September 2020.
Gallery Item 021 Concrete being poured as part of the Marin Sonoma Narrows Project. Photograph taken in September 2020.
Gallery Item 022 Construction work on the Marin Sonoma Narrows Project. Photo taken in July 2020.
Gallery Item 023 Traffic flows on US-101 on either side of the new lanes under construction. Photograph taken July 2020.
Gallery Item 024 Construction on the San Antonio Bridge on US-101. Photograph taken April 2018.
Gallery Item 025 Construction on the San Antonio Bridge on US-101. Photograph taken April 2018.
Gallery Item 026 Construction on the San Antonio Bridge on US-101. Photograph taken April 2018
Gallery Item 027 Groundbreaking ceremony for the Marin Sonoma Narrows B-7 Project on July 21, 2022
Gallery Item 028 Groundbreaking ceremony for Marin-Sonoma Narrows Project Phases A-2, A-3, and B-1 on April 12, 2013.
Gallery Item 029 Groundbreaking ceremony for Marin-Sonoma Narrows Project Phases A-2, A-3, and B-1 on April 12, 2013.
Gallery Item 030 Ribbon cutting ceremony for the completion of the U.S. 101 Old Redwood Highway Interchange Project on July 30, 2015.