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Bonner Grade
Cedar Pass, State Hwy 299 (P.M. 51.3), 6.2 mi W of Cedarville, Cedarville,
CA ,
USA
Latitude & Longitude:
41° 33' 45.2088",
-120° 16' 21.3096"
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California State
Historical Marker
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The first road from Cedarville to Alturas followed the course of the present highway over Warner Mountains from Surprise Valley. It was named in honor of John H. Bonner, who was instrumental in securing the construction of the road over Bonner Grade in 1869.
Last updated: 2/15/2016 21:05:00 |
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Bonner Grade Historical Marker Location Map, Cedarville, California Map
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