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Firefighting and recovery efforts continue in the Los Angeles area, where devastating fires have killing at least 28 people, destroyed more than 12,000 structures and prompted evacuation orders ...
Summit Tunnel (Tunnel No. 6), abandoned rail tunnel, Central Pacific Railroad, one of a number through the Donner Pass area of the Sierra Nevada [4] The Big Hole, Tunnel No. 41, built to replace Tunnel No. 6 through the Donner Pass and carrying the Union Pacific Railroad (34) Feather River Route, including: Chilcoot Tunnel; Spring Garden Tunnel
The east–west tunnel is signed as a part of California State Route 24 and connects Oakland to central Contra Costa County.It is named after Thomas E. Caldecott (1878–1951), who was mayor of Berkeley in 1930–1932, a member of the Alameda County Board of Supervisors in 1933–1945, and president of Joint Highway District 13, which built the first two bores.
Rosemont is a census-designated place (CDP) in Sacramento County, California, United States. It is part of the Sacramento – Arden-Arcade – Roseville metropolitan area . The population rose to 23,510 at the 2020 census.
The Posey Tube, completed and opened to traffic on October 27, 1928, was named after George Posey, [23] who was the Alameda County Surveyor during the tunnel's planning and construction, and also chief engineer on the construction project. [24] [25] It is the first tunnel for road traffic built using the immersed tube technique.
Location County Coordinates CA-30 CA-199: Central Pacific Railroad, Clipper Gap Tunnel Central Pacific Transcontinental Railroad, Tunnel 'O' Abandoned 1873 1984 1997 Union Pacific Railroad: Clipper Gap: Placer: CA-86
The cut for the tunnel is located to the west of today's Highway 14, and east of Gates King Open Space. [7] The pass is named after the local businessman Henry Newhall, whose land holdings formed the basis of the city of Santa Clarita. Newhall came to California from Saugus, Massachusetts during the California Gold Rush in 1850.
The California Division of Highways decided to replace the tunnel; in July 1938 work started to remove the rock above the tunnel to create a four-lane highway. The road was first known as US Highway 6, then state Highway 14, and finally the present-day Sierra Highway. The cut for the tunnel is west of today's Highway 14. [9]