Doran Memorial Bridge, Road bridge near Hillsborough, California, United States

The Doran Memorial Bridge is a pair of steel girder bridges carrying eight lanes of Interstate 280 over San Mateo Creek near Hillsborough, California. Four arched concrete piers with modified Gothic arches support the twin spans, which have five welded steel girders each and a 22-foot-wide concrete slab between them. Slanted panels conceal the structural steel on both sides.

Caltrans plans first called it the San Mateo Creek Bridge. It was named for Hillsborough police officer Eugene A. Doran, killed near the site on August 5, 1959, and his widow attended the May 28, 1969 ribbon-cutting. In 2004 it was rededicated to include his son, Marine Lance Corporal Patrick M. Doran, who died in Vietnam on February 18, 1967.

The bridge's name honors two people: Hillsborough police officer Eugene A. Doran, killed near the site on August 5, 1959, and his son Patrick M. Doran, a Marine lance corporal who died in Vietnam on February 18, 1967. It was named for Eugene in 1969 and rededicated in 2004 to include Patrick. Markers for both are at the Crystal Springs Safety Roadside Rest Area, about half a mile north.

Markers for Eugene A. Doran and the 1970 AISC steel bridge award stand at the Crystal Springs Safety Roadside Rest Area off northbound I-280, about half a mile (0.8 km) north of the bridge. The rest area also holds a 22-foot statue of Junipero Serra.

The bridge appeared on the cover of the 1972 Highway Statistics report by the Federal Highway Administration, alongside the Verrazzano–Narrows Bridge, the Chesapeake Bay Bridge-Tunnel and the Cowlitz River Bridge. Its steel is hidden behind slanted side panels, so the girders are not visible from the roadway.