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The Thomas P. "Tip" O'Neill Jr. Tunnel (colloquially O'Neill Tunnel) is a highway tunnel built as part of the Big Dig in Boston, Massachusetts.It carries the Central Artery underneath downtown Boston, and is numbered as Interstate 93 (I-93), U.S. Route 1 (US 1), and Route 3.
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
Thomas P. O'Neill Jr. Tunnel, twin tunnels, 2003, I-93 (in coordination with the Dewey Square Tunnel), Boston. Dewey Square Tunnel, southbound I-93, southbound portion of the Thomas P. O'Neill Jr. Tunnel, Boston; Massachusetts Bay Transportation Authority tunnels in the Greater Boston area: MBTA Blue Line rail tunnel:
The Big Dig was a megaproject in Boston that rerouted the then elevated Central Artery of Interstate 93 that cut across Boston into the O'Neill Tunnel and built the Ted Williams Tunnel to extend Interstate 90 to Logan International Airport. Those two projects were the origin of the official name, the Central Artery/Tunnel Project (CA/T Project).
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 ...
Pages in category "Tunnels in California" The following 4 pages are in this category, out of 4 total. This list may not reflect recent changes. *
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This is a list of state highways in the U.S. state of California that have existed since the 1964 renumbering.It includes routes that were defined by the California State Legislature but never built, as well as routes that have been entirely relinquished to local governments.