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Location DB > United States > California > South Bay > Dumbarton Rail Corridor
Dumbarton Rail Corridor
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 Database Info
created by rapcw on 12/29/2006 10:36 AM
last modified by rapcw on 4/15/2007 10:04 PM
Publically Viewable Publically Viewable
This location has been labeled by its creator as Public, and therefore can be viewed by anyone.
An 11 mile long abandoned (for now) railroad right-of-way which crosses the San Francisco Bay in the south and consists of two swing bridges.
 Basic Information
Type: Outdoors
Status: Closed
Accessibility: Easy to see Newark Slough Bridge; Difficult to stand on either swing bridge
Recommendation: check it out if you're nearby
 Physical Information

South Bay, California
United States
Owner: San Mateo County Transportation Authority/Caltrans
  • See a map of this location
  •  Hazards
  • rust
  • unsafe flooring
  • water
  •  Interesting Features
    The old signal poles along the right-of-way, both swing bridges, the marshes, the 1.5 mile walk towards the Newark Slough bridge.
     Security Measures
  • None, atleast until they begin refitting it for future passenger rail use; I guess you could say water since it prevents you from walking on both bridges
  •  Historical Dates
    Built: 1910
    Closed: 1982
     Required Equipment
  • binoculars
  • long pants / sleeves
  • towelettes
  • Rope, inflatable raft to access either bridge or the island between them
  •  Recommended Equipment
    Camera, food, good hiking shoes
    The Dumbarton Railroad Corridor was constructed by the Central Pacific Railway (Southern Pacific) to eliminate 22.5 miles of trip length from San Francisco to Tracy and opened for service on September 12, 1910. It was the first bridge across the San Francisco Bay, from Redwood City east to Newark, and required two swing bridges, one across Newark Slough and one across the Bay, and six 180-ft long steel trusses. The main use of the line was for quickly delivering freight traffic from the Port of San Francisco east across the Bay. However, the development of the Port of Oakland, the Benecia Rail Bridge, and the decline in rail traffic after WWII led to the reduction and eventual end of rail traffic over the bridge. Southern Pacific started a rehabilitation of the corridor in the 1960s, but the decline of traffic from the Port of San Francisco at the same time led to a halt in the rehabilitation work. The last train crossed the corridor in 1982 and the bridges were permanently placed in the "open" position. In 1994, the San Mateo County Transportation Authority purchased the Dumbarton Rail Corridor right-of-way for future transportation purposes with help from Caltrans. By 2012 Caltrain hopes to have the rail corridor once again active for passenger rail service, most likely without the 100 year old swing bridges still in place along the route.
     Media Coverage


     Future Plans
    The Corridor is planned to be back in use for passenger rail by 2012 at a cost of atleast $590 million.

    Add your own story
     Photo Galleries
    Click to view gallery
    Dumbarton Rail Bridge
    Thu, Dec 28th, 2006
    posted by rapcw
    4 pictures
    Click to view gallery
    Newark Slough Swing Bridge
    Thu, Dec 28th, 2006
    posted by rapcw
    23 pictures
    Click to view gallery
    Maps and Historic
    Fri, Dec 29th, 2006
    posted by rapcw
    8 pictures

    Add your own photos

    Mark all galleries as Seen
     Web Links

    http://w3.the-kgb..../rail/rrpics2.html - Good outline of the corridor and some pictures of the other side of the Newark Slough Bridge (the side I didn't see) - Nice kite photography of the Newark Slough and Dumbarton rail bridges.

    http://www.arch21....dir/dumbarton.html - A page covering the political and monetary side of the plans for the rail corridor.

    http://historicals...ricals/histmap.asp - A great site in general for historic nautical charts, and has several archived charts for the area around the Dumbarton Rail Corridor.

    Edit this Location
     Moderator Rating
    The moderator rating is a neutral rating of the content quality, photography, and coolness of this location.

    Category Rating
    Photography 7 / 10
    Coolness 8 / 10
    Content Quality 10 / 10
    This location's validation is current. It was last validated by Emperor Wang on 4/16/2007 3:51 AM.

     Latest Changes
  • on Apr 16 07 at 3:51, Emperor Wang validated this location
  • on Apr 15 07 at 22:04, rapcw changed the following: Web Links
  • on Apr 15 07 at 22:03, rapcw changed the following: Web Links
  • on Dec 31 06 at 15:42, Emperor Wang validated this location
  • on Dec 31 06 at 5:47, rapcw changed the following: Media Coverage, Web Links
  • on Dec 31 06 at 5:38, rapcw updated gallery picture 1986
  • on Dec 31 06 at 5:29, rapcw updated gallery picture 1985
  • on Dec 31 06 at 5:24, rapcw updated gallery picture 1995
  • on Dec 31 06 at 5:21, rapcw updated gallery picture 1975
  • on Dec 31 06 at 5:13, rapcw added some pictures to a gallery
  •  Forum Threads about this Location
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     SubjectStarted ByRepliesViewsLast Post
    You must log in for this feature to work.Answers to QuestionsRailGuy8817586/3/2009 11:32 PM by Charlie_Dunver
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