Ensiklopedia Dunia

Technopedia Center

Faculty of Engineering and Computer Science
S1 Informatics S1 Information Systems S1 Information Technology S1 Computer Engineering S1 Electrical Engineering S1 Civil Engineering

faculty of Economics and Business
S1 Management S1 Accountancy

Faculty of Letters and Educational Sciences
S1 English literature S1 English language education S1 Mathematics education S1 Sports Education

Alemany Maze - Wikipedia

Coordinates: 37°44′07″N 122°24′24″W / 37.7352°N 122.4068°W

From Wikipedia, the free encyclopedia

Alemany Maze
Alemany Interchange
The Alemany Maze (seen from the northwest, 2019)

Location
San Francisco
Coordinates	37°44′07″N 122°24′24″W / 37.7352°N 122.4068°W / 37.7352; -122.4068
Roads at junction	US 101 I-280
Construction
Maintained by	Caltrans

The Alemany Maze is an interchange between the James Lick Freeway (U.S. Route 101) and the John F. Foran Freeway (Interstate 280) in the city of San Francisco.^[1] Alternative names for this highway feature are Alemany Interchange and The Spaghetti Bowl.^[2]

History

The Alemany Maze gets its name from Alemany Boulevard, which is named for Joseph Sadoc Alemany, who in 1853 became the first Archbishop of San Francisco.

The Alemany Maze is an interchange that originally controlled the separation of traffic travelling between the James Lick Freeway, Bayshore Boulevard, and Alemany Boulevard. The former US 101 Bypass, which followed Bayshore Boulevard to the south, separated from the old US 101 alignment at the Maze. The Alemany Boulevard routing of US 101 was eventually replaced by the construction of the Southern Freeway, later renamed the John Foran Freeway. The bridge leading US 101 over Alemany Boulevard (at a section called Alemany Circle) was constructed in 1950 and renewed in 2020.^[3]^[4] The routing of US 101 was shifted to the Bayshore Freeway in 1964, with the former US 101 freeway becoming renumbered as part of I-280.^[5]

According to SFGate, "Alemany" is pronounced "al-UH-mainy" locally.^[6]

Maze features

The most notable features of the Alemany Maze are the double-deck ramps to and from US 101 from the south and the double-deck portion of I-280 northeast of the interchange. Although overall a north–south freeway, I-280 actually runs east–west through the interchange. The word maze refers to the series of interchanges necessary for a vehicle to maneuver in order to navigate their way from a multi-lane freeway to a narrower distribution structure of lanes which funnel to connector exit ramps, similar to the better known MacArthur Maze. Traffic reporters use these words combined with the Alemany Maze to indicate its bottleneck status.^[7] The San Francisco Chronicle has described it as "a spaghetti tangle of freeway" which "[l]ike a tentacled octopus [...] stretches north to the Bay Bridge and south to Daly City and San Francisco International Airport, with prongs swooshing in every direction".^[4]

In spite of its size and complexity, like the MacArthur Maze, it does not allow full freedom of movement: drivers approaching the interchange in the southbound direction on either highway cannot directly access the northbound direction of the other highway.

References

^ "Design and construction details of the Alemany Interchange". Archived from the original on 2011-07-14. Retrieved 2007-03-25.
^ Todd Lapin (2011-05-10). "Nomenclature Update: Introducing "The Spaghetti Bowl"". Retrieved 2022-12-14.
^ "101 Alemany Construction Information & FAQs | Caltrans". dot.ca.gov. Retrieved 2024-12-06.
^ ^a ^b Swan, By Rachel (2019-10-02). "You've been warned: 'Carmageddon' coming to Highway 101 in SF in July". San Francisco Chronicle. Retrieved 2024-12-06.
^ US Highway 101, San Mateo/San Francisco Area, 1964 entry.
^ Graff, Amy (2020-02-22). "Things people say that show they're not from the SF Bay Area". SFGATE. Retrieved 2024-12-06.
^ "SC solutionPDF i-280/US-101 interchange" (PDF). Archived from the original (PDF) on 2008-07-09. Retrieved 2008-07-18.

External links

US-101 Deck Replacement April-May 2020 Timelapse video showing the Alemany Maze up close from various angles, published by Caltrans as part of the documentation of a 2020 project to reconstruct parts of the structure

Categories:

Hidden categories:

History

Maze features

See also

References

External links