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Caption: "Ferry Boat Contra Costa," c. 1920. Built in 1914, the Contra Costa ferried locomotives and train cars across the Carquinez Strait between Benicia and Port Costa. The largest rail ferry ever built, the Contra Costa operated until the Benicia-Martinez Railroad Bridge opened in 1930. She made the crossing as many as 52 times in 24 hours.
Date: 1920
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Caption: "San Francisco Bay Bridge Cable Anchorage. Nov. 1, 1935." View of a cable anchorage at one terminus of the San Francisco-Oakland Bay Bridge. The Bay Bridge's design combined three different types of bridge-building technology over the five miles it covers between San Francisco and Oakland: a suspension span, a cantilevered span, and a tunnel. At the time of its completion in 1936 the bridge was the longest steel structure on the globe. It also featured the deepest bridge pier ever built, and the world's largest bore tunnel.
Date: 11/1/1935
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No Caption: A view of the Multnomah Falls on the Oregon side of the Columbia River, c. 1935.
Date: 1935