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The Wingo Drawbridge crosses Sonoma Creek near the ghost town of Wingo. Located in Northern California, in the marshes north of San Pablo Bay, Wingo was once a railroad connection point for visitors arriving by steam boat from San Francisco. The Wingo Drawbridge is one of the few examples of a Scherzer Rolling Bridge, a design that has no pivots or hinges. When opened to water traffic the span rolls like a rocking chair, only further. The bridge was built in the 1920's by the Toledo Bridge & Crane Co. and is typical of that period before welding came into general use.