California Historical Landmarks in Sierra County
California Historical Landmark 421
Henness Pass Road
Ridge and Henness Pass Roads
3.3 Miles West of Alleghany
The main emigrant trail between Virginia City, Nevada and Marysville, California, the Henness Pass Road was in use as early as 1849. At that time, this was the only road through the Henness Pass.
Citation from California Office of Historic Preservation