Tools
Road histories involve several chronologies: routes on the ground, state adoption, numbered highways, named roads, bridge projects, and later bypasses.
Distinguishing the historical events#
A construction date, a legislative designation, and a later route number can refer to different events. Before comparing two roads, identify which event the source actually dates. This is especially important when asking whether one highway was “built first.”
The Avenue of the Giants history guide supplies regional context. The 1952 proposed road map is a separate local record; it does not establish a chronology for the state highway system.
Redwood Highway and the Avenue of the Giants#
Caltrans’ District 9 centennial history describes Francis G. Somner’s earlier work connecting Eureka and Humboldt County through expansion of the Redwood Highway before his 1923 appointment to District 9. That places an identified phase of the Redwood Highway story in the early state-highway era.
The 2019 Caltrans named-highways register, page 86, identifies Avenue of the Giants with Route 254 and cites ACR 10, chapter 36, 1960. The register also notes the former name Alternate Redwood Highway. This is a naming reference, not by itself a complete bypass-construction history.
The Humboldt Redwoods Interpretive Association’s area history provides regional context for road travel and the redwood visitor economy. Detailed claims about individual bridge contracts, opening dates, or town impacts require their own sources.
Was Highway 36 built first?#
The sources verified for this collection do not establish a single construction date for the complete modern Highway 36 corridor that can be compared fairly with the complete Redwood Highway. The statement “Highway 36 was built first” is therefore not adopted here.
A defensible comparison would identify the particular segments and distinguish wagon or stage roads, state-highway adoption, construction contracts, route numbering, and completion or opening. The Caltrans chronology cited above establishes Redwood Highway work before 1923; the 1960 naming entry establishes a different event. Neither settles the full comparison.
Transportation archive research#
Useful additions would include predecessor-agency annual reports, dated state highway maps, contract and bridge records, and construction photographs with identified locations and dates. Caltrans’ right-of-way maps and survey records gateway identifies district-level research resources.
Regional logging-railroad evidence belongs in the coast redwood history collection when a source identifies the operation. A historical photograph should retain its archive reference and should not be republished without verified reproduction rights.
For present travel information, use the separate visitor guide. For historical map evidence, use the map library and master timeline.
Last materially updated and reviewed: 8 September 2026.