REDWOOD CITY (AP) — A Northern California judge ruled Wednesday against a Silicon Valley billionaire who had shut down public access to a beach beloved by surfers and swimmers, ordering him to reopen his private road to the beach. San Mateo County Superior Court Judge Barbara Mallach ruled that venture capitalist Vinod Khosla would have to obtain permission from the California Coastal Commission if he wished to close off Martin’s Beach, a secluded stretch of coast south of Half-Moon Bay. The case, brought by the surfer and environmental group Surfrider Foundation, had been seen as a test of 1970s laws ensuring public access to the state’s 1,100 miles of coast.