Fernbridge Concrete Bridge Over Eel River Fortuna Ferndale Humboldt 1911 Real Photo Postcard

The Big Concrete Bridge Across Eel River refers to Fernbridge, a landmark structure completed in 1911 in Humboldt County, California. Designed by engineer John B. Leonard and constructed by the Mercer-Fraser Company, this bridge was a pioneering achievement in reinforced concrete construction. Spanning 1,385 feet with seven arch spans, it was celebrated as one of the longest and most significant concrete bridges in California at the time, earning it the moniker Queen of Bridges.