Photos 

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West portal

Photo taken by Craig Philpott in May 2010

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West portal

Photo taken by Craig Philpott in May 2010

View high-res version

Map 

Facts 

Overview
Tunnel under mountainside on Big Oak Flat Road
Location
Mariposa County, California
Status
Open to traffic
History
Built during 1930's
Design
Tunnel
Dimensions
Total length: 270 ft.
Deck width: 26 ft.
Approximate latitude, longitude
+37.72555, -119.70429   (decimal degrees)
37°43'32" N, 119°42'15" W   (degrees°minutes'seconds")
Approximate UTM coordinates
11/261666/4178807 (zone/easting/northing)
Elevation
4246 ft. above sea level
Inventory number
BH 45218 (Bridgehunter.com ID)

Categories 

California (1,384)
Mariposa County, California (38)
Open (24,132)
Owned by state (7,752)
Total length 250-500 feet (2,657)
Tunnel (382)

Update Log 

  • May 10, 2010: Added by Craig Philpott

Sources