NationMaster - Encyclopedia: Dumbarton Bridge (California)

The Dumbarton Bridge is the southernmost of the highway bridges that span the San Francisco Bay in California. Carrying over 81,000 vehicles daily, it is also the shortest bridge across San Francisco Bay at 1.63 miles (8600 feet / 2622 m / 2.62 km). Its eastern terminus is in Fremont, near Newark in the San Francisco Bay National Wildlife Refuge, and its western terminus is in Menlo Park. The bridge has three lanes in each direction, and features a separated bike/pedestrian lane on its eastbound side. Like the San Mateo Bridge to the north, power lines parallel the bridge across the bay. Image File history File linksMetadata Download high-resolution version (2269x1244, 1034 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Dumbarton Bridge (California) Metadata This file contains additional information, probably added from the digital camera or scanner used... Prev Next < Route 83 Route 85 > California State Routes Unconstructed - Deleted - Scenic State Route 84 is a split-section California State Highway consisting of two sections: an east-west arterial road running from San Gregorio to Menlo Park, across the Dumbarton Bridge through Fremont and ending at I-580 in... San Francisco Bay, San Pablo Bay, and the Golden Gate The San Francisco Bay is a shallow, productive estuary through which water draining approximately forty percent of California, flowing in Sacramento and San Joaquin rivers from the Sierra Nevada mountains, enters the Pacific Ocean. ... Menlo Park is a city in San Mateo County, California in the United States of America. ... Fremont (IPA: ) is a city in California which was incorporated on January 23, 1956, from the merger of five smaller communities: Centerville, Irvington, Mission San Jose, Niles, and Warm Springs. ... AADT - Annual Average Daily Traffic flow - is a term used mainly in transportation planning, but increasingly for websites. ... 1982 (MCMLXXXII) was a common year starting on Friday of the Gregorian calendar. ... Mounted FasTrak transponder FasTrak is an electronic toll collection system in the state of California in the United States. ... A log bridge in the French Alps near Vallorcine. ... San Francisco Bay, San Pablo Bay, and the Golden Gate The San Francisco Bay is a shallow, productive estuary through which water draining approximately forty percent of California, flowing in Sacramento and San Joaquin rivers from the Sierra Nevada mountains, enters the Pacific Ocean. ... Official language(s) English Capital Sacramento Largest city Los Angeles Area Ranked 3rd - Total 158,302 sq mi (410,000 kmÂ²) - Width 250 miles (400 km) - Length 770 miles (1,240 km) - % water 4. ... Fremont (IPA: ) is a city in California which was incorporated on January 23, 1956, from the merger of five smaller communities: Centerville, Irvington, Mission San Jose, Niles, and Warm Springs. ... The city of Newark highlighted within Alameda County Newark is a city located in Alameda County, California. ... Don Edwards San Francisco Bay National Wildlife Refuge is a US National Wildlife Refuge located in San Francisco Bay, California. ... Menlo Park is a city in San Mateo County, California in the United States of America. ... Eastern causeway portion of San Mateo-Hayward Bay Bridge (view from Hayward looking west toward San Mateo) The Hayward-San Mateo Bridge is a bridge crossing the San Francisco Bay, in the US, linking the San Francisco Peninsula with the East Bay. ... Transmission towers Transmission lines in Lund, Sweden Electric power transmission, or more accurately Electrical energy transmission, is the second process in the delivery of electricity to consumers. ...

Tolls are collected in the westbound direction at the toll plaza, which is located on the eastern side of the bay. Currently, there is a toll charge of $3, but the toll will rise to $4 in 2007. There are six toll lanes at the toll plaza. The two far left toll lanes are dedicated FasTrak lanes. Carpools carrying 2 or more persons are permitted to bypass the left side of the toll plaza for free during weekday morning and afternoon commute hours. The United States dollar is the official currency of the United States. ... Mounted FasTrak transponder FasTrak is an electronic toll collection system in the state of California in the United States. ... Carpooling (also known as ride-sharing, lift-sharing and car sharing), is shared use of a car, in particular for commuting to work, often by people who each have a car but travel together to save costs and in the interest of other socio-environmental benefits mentioned below. ...

Environmental factors

When the current bridge was planned in the 1970s, Caltrans conducted extensive environmental research on the aquatic and terrestrial environment. Principal concerns of the public were air pollution and noise pollution impacts, particularly in some residential areas of Menlo Park and East Palo Alto. Studies were conducted to produce contour maps of projected sound levels and carbon monoxide concentrations throughout the western approaches, for each alternative connection scheme}.^{[citation needed]} Image File history File links Raildumbartrazorback. ... Image File history File links Raildumbartrazorback. ... Caltrans logo The soaring ramps in the stack interchanges favored by Caltrans often provide stunning views. ... Marine life can be very abundant. ... A landform comprises a geomorphological unit. ... Before flue gas desulfurization was installed, the emissions from this power plant in New Mexico contained excessive amounts of sulfur dioxide. ... Noise pollution, usually called environmental noise in technical venues, is displeasing human- or machine-created sound that disrupts the environment. ... Menlo Park is the name of some places in the United States of America: Menlo Park, California Menlo Park, New Jersey (See also Menlo. ... East Palo Alto (or simply EPA) is a city located in San Mateo County, California, United States. ... Sound pressure level (SPL) or sound level Lp is a logarithmic measure of the energy of a particular noise relative to a reference noise source. ... Carbon monoxide, with the chemical formula CO, is a colourless, odourless and tasteless gas. ...

The local area around the bridge is an important ecological area, hosting many species of birds, fish and mammals. The endangered species California clapper rail is known to be present in the western bridge terminus area. The critically endangered Amur Tiger, a rare subspecies of tiger. ... Trinomial name Rallus longirostris obsoletus Ridgway, 1874 The California Clapper Rail (Rallus longirostris obsoletus) is an endangered subspecies of the Clapper Rail (. It is found principally in Californias San Francisco Bay, and also in Monterey Bay and Morro Bay. ...

Near the bridge on the Peninsula are Menlo Park's Bayfront Park, East Palo Alto's Ravenswood Open Space Preserve, and Palo Alto's Baylands Nature Preserve. An accessible portion of the San Francisco Bay National Wildlife Refuge lies immediately north of the western bridge terminus, where the Ravenswood trail runs^[1]. Don Edwards San Francisco Bay National Wildlife Refuge is a US National Wildlife Refuge located in San Francisco Bay, California. ...

On both sides of the eastern terminus of the bridge are large salt ponds and levee trails belonging to the Don Edwards San Francisco Bay National Wildlife Refuge. The headquarters and visitor center for the refuge is on a hill south of the bridge approach. North of the eastern bridge terminus is Coyote Hills Regional Park, with its network of trails running over tall hills. North of that is the Alameda Creek Regional Trail, running from the Bay to Niles Canyon. East of Coyote Hills is Ardenwood Historic Farm, a restored working farm that preserves and displays turn-of-the-century farming methods A levee, levÃ©e (from the feminine past participle of the French verb lever, to raise), floodbank or stopbank is a natural or artificial embankment or dike, usually earthen, which parallels the course of a river. ... Don Edwards San Francisco Bay National Wildlife Refuge is a US National Wildlife Refuge located in San Francisco Bay, California. ... Coyote Hills Regional Park is a regional park administered by the East Bay Regional Park District. ... Niles Canyon is a canyon, formed by Alameda Creek, largely in unincorporated Alameda County, California, USA; part of which lies in the Fremont city limits, and also the Union City city limits. ... Ardenwood Historic Farm is a Regional Historic Landmark in Fremont, California. ...

History and engineering features

The bridge never was officially named, but the common use name comes from Dumbarton Point, which dates to 1876 when it was named for Dumbarton in Scotland. Built originally to provide a shortcut for traffic originating in San Mateo and Santa Clara Counties, the bridge served industrial and residential areas on both sides. The earlier bridge, opened on January 17, 1927, was the first vehicular bridge to cross San Francisco Bay. Portions of this old drawbridge remain as fishing piers. The original bridge was built with private capital and then purchased by the State for $2.5 million in 1951. 1876 (MDCCCLXXVI) was a leap year starting on Saturday. ... Dumbarton (DÃ¹n Breatainn in Scottish Gaelic) is a burgh in Scotland, lying on the north bank of the River Clyde where the River Leven flows into the Clyde estuary. ... Motto: (Latin for No one provokes me with impunity)1 Anthem: Multiple unofficial anthems Capital Edinburgh Largest city Glasgow Official language(s) English, Gaelic, Scots 2 Government Constitutional monarchy - Queen Queen Elizabeth II - Prime Minister of the UK Tony Blair MP - First Minister Jack McConnell MSP Unification - by Kenneth I... 1927 (MCMXXVII) was a common year starting on Saturday (link will take you to calendar). ...

Its age and the limitations of a two-lane undivided roadway and lift-span made it necessary for a replacement bridge to be constructed 90 feet to the north. This current bridge, a six-lane, high-level structure, was opened to traffic in October 1982. The cost of the complete replacement project was $200 million. The current bridge has a shoulder in each direction for emergency use and a two-way bicycle and pedestrian path on the eastbound side. A 340 foot center span provides 85 feet of vertical clearance for shipping. The approach spans on both sides of the Bay are of prestressed lightweight concrete girders supporting a lightweight concrete deck. The center spans are twin steel trapezoidal girders which also support a lightweight concrete deck. This article is becoming very long. ... Italian ship-rigged vessel Amerigo Vespucci in New York Harbor, 1976 A ship is a large, sea-going watercraft. ... This page is a candidate to be copied to Wiktionary. ...

Connections to the western circulation system

The bridge is part of California State Route 84, and is directly connected to Interstate 880 by a freeway segment north of the Fremont end. However, it is not directly connected to US 101 at its southern end in Menlo Park. Motorists must traverse one of three at-grade routes to connect from the Bayshore Freeway to the bridge. These are (north to south) the Bayfront Expressway, linking to 101 at Marsh Road, Atherton (the official routing of SR 84), or via another mile of frontage road, to Seaport Boulevard/Woodside Road, Redwood City; Willow Road, approximately one-mile expressway through east Menlo Park to 101; and University Avenue, the main commercial street of East Palo Alto. JUNCTION POSTMILE Segment 1 SR-1 SM 0. ... JUNCTION POSTMILE SR-17 SCL 0. ... JUNCTION POSTMILE I-5 LA 0. ...

Although this has led to severe traffic problems on the bridge itself and in Menlo Park and East Palo Alto, Caltrans has been unable to upgrade the relevant portion of Highway 84 to Interstate standards, due to opposition from the cities of Menlo Park, Atherton and Palo Alto. The freeway opponents fear that upgrading Highway 84 will encourage more people to live in Alameda County (where housing is more affordable) and commute to jobs in the mid-Peninsula area, thus increasing traffic in their neighborhoods to the south of the bridge. East Palo Alto (often called EPA) is a city located in San Mateo County, California, United States. ... Atherton is a town in San Mateo County, California, United States. ... Location of Palo Alto within Santa Clara County, California. ... Official website: http://www. ...

Bus service across the bridge is provided by the Dumbarton Express, run by a consortium of local transit agencies (SamTrans, AC Transit, VTA and others) which connects to BART at Union City and Caltrain at Palo Alto and California Avenue (Mayfield). The Dumbarton Express is a California bus service operating between Union City BART station and Palo Alto Caltrain station via the Dumbarton Bridge. ... SamTrans (San Mateo County Transit District) is a public transit agency in and around San Mateo, California in the San Francisco Bay Area. ... AC Transit (in full, Alameda-Contra Costa Transit District) is a regional bus agency serving parts of Alameda County and Contra Costa County in the eastern San Francisco Bay Area. ... It has been suggested that Santa Clara Valley Transit Authority be merged into this article or section. ... A westbound BART train in downtown San Francisco (wide-angle photo). ... Caltrain is a commuter rail line on the San Francisco Peninsula and the Santa Clara Valley in the United States. ...

Film credits

An extended sequence in the movie Harold and Maude takes place on the 1927 span and its eastern approach. The Dumbarton Bridge is also mentioned in the dialog of the 1992 film Sneakers. Harold and Maude is a movie directed by Hal Ashby in 1971. ... 1927 (MCMXXVII) was a common year starting on Saturday (link will take you to calendar). ... 1992 (MCMXCII) was a leap year starting on Wednesday. ... Sneakers is a 1992 film directed by Phil Alden Robinson (Field of Dreams) and starring Robert Redford, Dan Aykroyd, Ben Kingsley, Mary McDonnell, River Phoenix, Sidney Poitier, and David Strathairn. ...

Dumbarton Rail Bridge

There is a rail bridge to the south of the car bridge, which was built in 1910. The rail bridge has been unused since 1982 and part of it collapsed in a fire in 1998^[2]. There are plans for a new rail bridge and rehabilitation of the rail line to serve a commuter rail service to connect Union City, Fremont, and Newark to various Peninsula destinations^[3]. A successful March 2004 regional transportation ballot measure included funding to rehabilitate the rail bridge for the commuter rail service. Fremont (IPA: ) is a city in California which was incorporated on January 23, 1956, from the merger of five smaller communities: Centerville, Irvington, Mission San Jose, Niles, and Warm Springs. ... USGS Satellite photo of the San Francisco Bay Area. ... 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ...

References

External links

Categories: Articles with unsourced statements | Bridges in California | Toll bridges in California | Bridges completed in 1984 | Bridges completed in 1927 | San Francisco Bay USGS Satellite photo of the San Francisco Bay Area. ... The Golden Gate Bridge is a suspension bridge spanning the Golden Gate, the opening into the San Francisco Bay from the Pacific Ocean. ... The Carquinez Bridge refers to parallel bridges which cross the Carquinez Strait linking Vallejo, California to the north, with Crockett, California to the south. ... The Benicia-Martinez Bridge from the Martinez side The Benicia-Martinez Bridge, also known as the George Miller Jr. ... The Antioch Bridge crosses the San Joaquin River linking Antioch, California with Sacramento County, California. ... The Richmond-San Rafael Bridge is the northernmost of the east-west crossings of the San Francisco Bay in California, USA, connecting Richmond on the east to San Rafael on the west end. ... The San Francisco-Oakland Bay Bridge ( ; known locally as the Bay Bridge) is a toll bridge which spans San Francisco Bay and links the California cities of Oakland and San Francisco in the United States, as part of Interstate 80. ... Eastern causeway portion of San Mateo-Hayward Bay Bridge (view from Hayward looking west toward San Mateo) Overview The San Mateo-Hayward Bridge is a bridge crossing the San Francisco Bay, in the US, linking the San Francisco Peninsula with the East Bay. ... San Francisco Bay, San Pablo Bay, and the Golden Gate The San Francisco Bay is a shallow, productive estuary through which water draining approximately forty percent of California, flowing in Sacramento and San Joaquin rivers from the Sierra Nevada mountains, enters the Pacific Ocean. ... Image File history File links California_State_Route_84. ... Eastern causeway portion of San Mateo-Hayward Bay Bridge (view from Hayward looking west toward San Mateo) Overview The San Mateo-Hayward Bridge is a bridge crossing the San Francisco Bay, in the US, linking the San Francisco Peninsula with the East Bay. ... Image File history File links California_State_Route_92. ...

Contents

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