Ancient Web: Don Wilson Followed Highway 101's Vanishing Concrete

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An interstate bypass can erase a road without actually removing it from the earth. Don Wilson's Highway 101 Project went looking for the leftover concrete.

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Wilson says he formally began the project in September 2003 to locate and document the old U.S. Highway 101 route between Santa Barbara and San Jose, California. Not just the highway's changing path, but the businesses that once survived on its passing traffic: service stations, diners, motels, and buildings that later became something else.

The plan was systematic. Each completed region would have a map, numbered photograph locations, and descriptions, plus instructions for driving the old route northbound or southbound. The homepage's long index includes Buellton, Gaviota, Nipomo, San Luis Obispo, Cuesta Grade, Paso Robles, San Lucas, and several more locations.

A second road beneath the new one

The Cuesta Grade section reveals the project's methods. An update dated March 30, 2005 says Wilson identified further stretches of the 1912–1932, fifteen-foot-wide cement highway by inspecting aerial photographs and then confirming the locations in the field.

The resulting numbered guide points to an old mule stop, the Horseshoe Turn, a former summit alignment, canyon roads, and small fragments beside the freeway. That is the difference between an article about an old road and a field notebook that lets someone identify its remains.

The San Lucas section follows roughly fifteen miles of old Cattleman Road between San Ardo and King City. Wilson says the current freeway bypassed that hazardous two-lane section in 1972. He records a local nickname, 'Death Road', and inventories surviving landmarks including the Bunte General Store, a truck stop, an old cement loop, and the Wildhorse Cafe site.

The homepage's completed-sections heading carries a 2019 update date, while many local survey pages still carry detailed notes from 2005 or 2006. Those older timestamps are an advantage: they help readers distinguish what was visible during the original fieldwork from what might remain today.

Historic101 is not a live road-condition service or an assurance that every old alignment is safe to explore. It is a historical record of a road continually overwritten by its replacements.

Follow the Cuesta Grade survey or explore the whole Highway 101 project.

Part of the Ancient Web Collection.