The Angeles Forest Highway is a 25-mile (40 km) road over the San Gabriel Mountains in Los Angeles County, California. It connects the Los Angeles Basin with the Antelope Valley and western Mojave Desert. Maintained by the Los Angeles County Department of Public Works, the highway is designated as County Route N-3 (CR N-3) or Forest Highway 59 (FH 59); the route numbers are unsigned, but noted on many maps.