BIG SUR, Calif. (AP) — Firefighters on Saturday were battling a wildfire that broke out in the rugged mountains along Big Sur, forcing hundreds of residents on this precarious stretch of the California coast to evacuate and authorities to shut its main roadway. The fire started Friday night in a steep canyon and quickly spread toward the sea, fanned by strong winds up to 50 mph (80 kph). The blaze burned at least 2.3 square miles (6 square kilometers) of brush and redwood trees, said Cecile Juliette, a spokesperson for the California Department of Forestry and Fire Protection. Authorities made contact with about 500 residents, urging them to evacuate the sparsely populated area between Carmel and Big Sur. More than 250 firefighters from multiple agencies and volunteer groups, aided by water-dropping aircraft, contained about 20% of the blaze by Saturday evening.