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Cut-and-cover tunnel between Glendale Freeway and Angeles Crest Highway (both part of State Highway 2) in La Cañada Flintridge (Memorial Park covers the freeway) Two short tunnels (eastbound only) under SR 710 and Ventura Freeway (SR 134) in Pasadena; Griffith Park Tunnel, Vermont Canyon Road/Mount Hollywood Drive in Griffith Park, Los Angeles
The Transbay Tube is an underwater rail tunnel that carries Bay Area Rapid Transit's four transbay lines under San Francisco Bay between the cities of San Francisco and Oakland in California. The tube is 3.6 miles (5.8 km) long, and attaches to twin bored tunnels. [ 2 ]
The Posey and Webster Street Tubes are two parallel underwater tunnels connecting the cities of Oakland and Alameda, California, running beneath the Oakland Estuary. Both are immersed tubes, constructed by sinking precast concrete segments to a trench in the Estuary floor, then sealing them together to create a tunnel. The Posey Tube, completed ...
The Holland Tunnel was the first underwater tunnel designed for automobiles. Atlantic Avenue tunnels on Long Island Rail Road: Abandoned Cobble Hill Tunnel under Atlantic Avenue, Downtown Brooklyn; Current Atlantic Branch tunnels under Atlantic Avenue, Downtown Brooklyn and Queens
When it was open, the California Aqueduct Bikeway was the longest of the paved paths in the Los Angeles area, at 107 miles (172 km) long from Quail Lake near Gorman in the Sierra Pelona Mountains through the desert to Silverwood Lake in the San Bernardino Mountains. This path was closed in 1988 due to bicyclist safety and liability issues.
The latest form championed by the Democratic governor is a single giant tunnel, down from two tunnels proposed by his predecessor, Jerry Brown. California's water tunnel to cost $20 billion. State ...
The water tunnel also would feed directly into the California Aqueduct, the canal that supplies Southern California with Delta water, eliminating the need to build two new reservoirs called ...
The controversial project, which has been in the works for decades, was formally approved in December.