Location:9943-9949 Carmelita Ave, Atascadero, CA 93422, USA

From their website, "The Three Bridges Oak Preserve (TBOP) is a 103 acre undeveloped parcel of native vegetation representative of both the mountains and interior valleys of California’s central coast.  It is located approximately two miles west of the city center of Atascadero, California and is bordered on the north by Atascadero Creek and on the south by chaparral and oak woodland.  The Preserve contains predominately native vegetation representing riparian, oak savannah, chaparral, and coastal mountain ecologies.  The Atascadero Land Preservation Society, ALPS, owns the parcel and has partnered with the City of Atascadero to develop both a trailhead and a multi-use trail system open to the public."

Three Bridges map