Bob Turbow is one of the many people who walk, run or bike along Shell Beach Road every day. After hearing about plans to add a two-mile-long Shell Beach Road Shared Use Path, he says he’s excited.

Perched on the bluffs of Shell Beach, a sprawling estate packed with unique art, architecture and one-of-a-kind views of the Pacific Ocean sits undisturbed, its gates often closed to the public. For ...