Fernbridge is an unincorporated community at an elevation of 39 feet (12 m) in Humboldt County, California,[1] named for a historic bridge, 3 miles (4.8 km) west-northwest of Fortuna.

The unincorporated area named Fernbridge lies between the Eel River and Highway 101 bisected by unused Northwestern Pacific Railroad tracks.

The Humboldt Creamery, a roadhouse, the old railway depot, several warehouses, a fuel depot and several houses line Fernbridge Drive (Old U.S. 101),[citation needed] which now serves as an access road between exits 691 and 692.Fernbridge is a stop on the Humboldt Transit Authority fixed route transit bus systems, served by the Redwood Transit System connecting north and south Humboldt along 101.

The United States Geological Survey maintains a webcam overlooking Fernbridge,[4] and a river gage[5] of water level at the bridge.

By 1891, the ferry was pulled by a steam winch and a seasonal pontoon bridge was added in the summer.