MacArthur Maze
MacArthur Maze | |
---|---|
MacArthur Interchange Distribution Structure | |
I-880 curves south onto the Cypress Street Viaduct at the bottom. | |
Location | |
Oakland, California | |
Coordinates | 37°49′38″N 122°17′28″W / 37.8271°N 122.2911°W |
Roads at junction | I-80 Caltrans |
The MacArthur Maze
Description
Four freeways intersect at this interchange:
I-80 west (Bay Bridge)- Interstate 80 from the Maze heads west across the Bay Bridge into San Francisco, where it joins US 101.
I-80 east / I-580 west (Eastshore Freeway) – Berkeley, Sacramento, San Rafael- The Interstate 80/Interstate 580 Richmond-San Rafael Bridge and eventually to Marin County, where it joins U.S. 101in San Rafael.
- The Interstate 80/Interstate 580
- Interstate 5.
I-880 south (Nimitz Freeway) – San Jose- Interstate 880 from the Maze heads south and southeast through Oakland along the Oakland Estuary, past the Oakland International Airport, and the Oakland Coliseum, then through southern Alameda County to San Jose where it turns into Highway 17 to Santa Cruz.
Local traffic using the interchange includes
Despite the interchange's size, it does not permit complete freedom of movement. Drivers approaching the Maze on I-880 from the south cannot directly access I-580 east, nor can drivers on I-580 from the east directly access I-880 south.
In at least one instance, the MacArthur Maze has been considered to include or instead refer to the four-level stack interchange completed in 1985 between California State Route 24, Interstate 980, and Interstate 580, about 1 mile (1.6 km) east of the East Bay Distribution Structure.[7] However, CalTrans unequivocally regards "MacArthur Maze" as only referring to the Distribution Structure.[8]
History
The maze was constructed along with the Bay Bridge in the 1930s; construction of the East Bay Distribution Structure itself started on April 8, 1934.
In the original 1936 configuration, traffic flows had to weave for about 550 feet (170 m); a third level was completed on October 24, 1955, separating traffic between MacArthur and the Bay Bridge from the north–south traffic between Cypress and the Eastshore Highway.[13] The enlargement to the Maze was consonant with plans already underway to build the double-deck Cypress Viaduct (which was later incorporated into the Nimitz Freeway, I-880). In addition, MacArthur Blvd was to be expanded into a freeway (the MacArthur Freeway, I-580).[13][14] The nickname "MacArthur" Maze originated sometime after the completion of the MacArthur Freeway in the early 1960s.
Another round of extensive re-engineering followed the 1989 Loma Prieta earthquake, including the addition of diamond lane ramps and a huge girder flyover connecting the relocated northbound Nimitz with the northbound Eastshore Freeway (which is technically I-80 eastbound and I-580 westbound). The original 1936 ramps were removed during this 1990s construction. Reinforcements were completed in 2001–2002.
1989 Loma Prieta earthquake
During the 6.9 Mw Loma Prieta earthquake, the double-decked Cypress Street Viaduct on I-880 between I-80 and the 14th Street exit collapsed, crushing cars and killing 42 people. Traffic on the MacArthur Maze headed towards I-880 was re-routed to I-580 and I-980, and ramps at both ends of the viaduct leading to the former Cypress Structure were temporarily signed for local traffic access to Cypress Street.
The Cypress Street Viaduct was demolished soon after the earthquake, but a replacement freeway wasn't opened until July 1997, due to lawsuits by environmentalists and local residents. A second connection to the Maze, known as the East Bay Viaduct, opened in 1998 but due to safety concerns, as well as ongoing retrofitting on the eastern I-580 connector, the structure was not fully rebuilt until 2001 (though a connection northwest to the Bay Bridge along the alignment of the old Grand Avenue Viaduct was built in 1995). The replacement sections of the Nimitz Freeway dispensed with the double-deck design. It was built near the Union Pacific railway tracks around the outskirts of West Oakland, rather than bisecting that neighborhood as the Cypress Viaduct had. Cypress Street, which ran on each side of the old double-deck highway, is now a landscaped parkway and has been renamed Mandela Parkway. In 2007 Mandela Parkway was linked at its north end with the west end of Yerba Buena Avenue, creating a new through route into Emeryville.
2007 I-580 East Connector collapse
At 3:42 am on Sunday, April 29, 2007, a
The California Highway Patrol (CHP) initially reported that they suspected that the tanker had been speeding and bounced off a guard rail, leading to the overturn.[18] The driver was found to have a clean record the preceding decade; drug or alcohol use was determined not to be a factor in the accident.[19]
The collapse of this bridge cut off the return route from San Francisco for many East Bay commuters (primarily those whose destinations are
Rebuilding
On May 7, 2007, the I-880 connector reopened at 4:30 a.m. to traffic. Substantial work was done to strengthen of the structure, which had sunk 9 inches (230 mm) due to the collapse of the I-580 connector onto the I-880 connector.[23]
On the evening of Thursday, May 24, the I-580 connector re-opened, just before the busy Memorial Day weekend. The deadline to finish the project was beaten by over a month, with the contractor earning a $5 million bonus for early completion.[25] The entire reconstruction project was completed only 26 days after the original accident.
A state projection concluded that the connector collapse had cost $90 million, based on a $6 million-per-day economic impact estimate. This includes a $491,000 loss in toll revenue for the Oakland Bay Bridge.[26]
On May 25, 2007, the CHP revoked the license for transporting hazardous materials from Sabek Transportation, the owner of the tank truck, after an investigation found 36 violations of its operations and equipment.[27]
References
- ^ "Caltrans plans I-80-580 lane closures for MacArthur maze work". Contra Costa Times. July 12, 2013. Archived from the original on March 4, 2016. Retrieved January 31, 2014.
- ^ "Maze Collapse News". Metropolitan Transportation Commission (San Francisco Bay Area). Archived from the original on February 2, 2014. Retrieved January 31, 2014.
The 580 connector ramp at the MacArthur Maze reopened Thursday evening
- ^ "Tanker fire destroys part of MacArthur Maze / 2 freeways closed near Bay Bridge". SFGate.com. April 29, 2007.
- ^ "Emeryville Comes of Age – 1930s to 1960s". City of Emeryville. Retrieved February 1, 2014.
These roads diverged east of the bridge in a tangle of ramps and overpasses just south of the Emeryville border officially called the 'Distribution Structure', but commonly known as the 'Maze'. After MacArthur Boulevard was built to carry U.S. 50 across Oakland, it became known as the MacArthur Maze
- ^ Mara, Janis (December 24, 2009). "MacArthur Maze a testament to Bay Area vision, resilience". Contra Costa Times. Archived from the original on March 4, 2016. Retrieved January 31, 2014.
It's the infamous MacArthur Maze, the freeway interchange near the eastern end of the Bay Bridge where Interstate highways 80, 580 and 880 converge
- ^ Port of Oakland Website Archived June 15, 2003, at the Wayback Machine
- ^ Scenario for a Magnitude 7.0 Earthquake on the Hayward Fault, "Regional Transportation Response", Joel Markowitz, DIANE Publishing, 1997
- ^ [chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://dot.ca.gov/-/media/dot-media/district-4/documents/d4-environmental-docs/80-macarthur-maze-vertical-clearance-project/4k810_pac3compliant-scannedsigpages.pdf MacArthur Maze Vertical Clearance Project February, 2020, Introduction: "The MacArthur Maze is located approximately one mile east of the San FranciscoOakland Bay Bridge (Bay Bridge) toll plaza and within one mile of the Port of Oakland...The MacArthur Maze connects three major freeways: I-80, I-580, and I-880."]
- ^ a b "East Bay Distribution Structure includes 16 grade separations" (PDF). California Highways and Public Works. November 1936. p. 27.
- ^ California Highways and Public Works, Official Journal of the Division of Highways, Department of Public Works, State of California, March 1935, p.16
- ^ "Maze From The Air, Simple On The Ground", The Oakland Post Enquirer, June 18, 1936, p.2
- ^ "Aerial view looking SE". San Francisco Public Library. Retrieved January 15, 2019.
- ^ a b "East Bay Distribution Structure includes 16 grade separations" (PDF). California Highways and Public Works. November–December 1955. pp. 24–26.
- ^ "Aerial view looking SE". San Francisco Public Library. Retrieved January 15, 2019.
- ^ AA Roads. Photo of I-880 southbound connector under the I-80E to I-580E ramp Interstate-Guide.com (November 26, 2004, retrieved on May 6, 2007)
- ^ Caltrans [1], retrieved on May 8, 2007
- ^ Bulwa, Demian (April 30, 2007). "THE MAZE MELTDOWN DRIVER: Despite 2nd-degree burns, he walked 1½ miles, hailed cab to hospital". San Francisco Chronicle. Retrieved April 30, 2007.
- ^ a b Bulwa, Demian; Peter Fimrite (April 29, 2007). "Tanker fire destroys part of MacArthur Maze: 2 freeways closed near Bay Bridge". San Francisco Chronicle. Retrieved April 30, 2007.
- ^ Bulwa, Demian (April 30, 2007). "Tanker driver in 580 collapse has long criminal record". San Francisco Chronicle. Retrieved March 3, 2007.
- ^ Johnson, Jason (May 3, 2007). "Detours clog streets and rattle neighbors". San Francisco Chronicle. Retrieved July 10, 2009.
- ^ a b Hoge, Patrick; Erin McCormick (May 3, 2007). "Expected freeway traffic horrors don't develop". San Francisco Chronicle. Retrieved May 10, 2007.
- ^ Cabanatuan, Michael; Paul Feist (May 4, 2007). "State plans to fix I-580 by June 29". San Francisco Chronicle. Retrieved July 10, 2009.
- ^ Del Vecchio, Rick; Diana Walsh (May 7, 2007). "One MacArthur freeway connector reopens". San Francisco Chronicle. Retrieved May 10, 2007.
- ^ Squatriglia, Chuck (May 13, 2007). "A gutsy guy's big gamble on the maze". The San Francisco Chronicle.
- ^ Cabanatuan, Michael (May 24, 2007). "I-580 connector reopens". San Francisco Chronicle. Retrieved May 24, 2007.
- ^ Connector Collapse Reduces Income from Bridge Tolls[permanent dead link]
- ^ Yi, Matthew (May 25, 2007). "CHP revokes hazmat license of trucking firm involved in Maze inferno". The San Francisco Chronicle.
External links
- Tanker truck fire causes collapse on Oakland Freeway at Wikinews
- Traffic Camera (Windows Media format) looking north of the MacArthur Maze on I-80East/580West (right) just over the I-880 interconnect (center) (left is I-80West/580East) – from Caltrans Live Traffic Cameras
- Roadway to Bay Bridge collapses after tanker explosion With photographs of 2007 collapse, SFGATE
- Construction Photos of the Bay Bridge, including the Distribution Structure
- CC Myers project page