Pratt through truss with central swing Pennsylvania (Petit) through truss span, timber trestle approaches on east and west
Total length
8,058 feet (2,456 m) (including approaches & Newark Slough Bridge) 1,390 feet (420 m) (steel structure)[2]
Traversable?
No
Longest span
310 feet (94 m)
No. of spans
7, excluding approaches
History
Designer
William Hood[3]
Constructed by
Southern Pacific[3]
Construction start
c.1907
Construction end
June 1910
Construction cost
US$3,500,000 (equivalent to $114,500,000 in 2023)[2]
Inaugurated
September 12, 1910 (1910-09-12)
Collapsed
1998
Closed
1982
Location
The Dumbarton Rail Bridge lies just to the south of the Dumbarton road bridge. Built in 1910, the rail bridge was the first structure to span San Francisco Bay, shortening the rail route between Oakland and San Francisco by 26 miles (42 km). The last freight train traveled over the bridge in 1982, and it has been proposed since 1991 to reactivate passenger train service (connecting Caltrain on the Peninsula with ACE, BART and the Capitol Corridor in the East Bay) to relieve traffic on the road bridges, though this would entail a complete replacement of the existing bridge. Part of the western timber trestle approach collapsed in a suspected arson fire in 1998.[4]
^Bradshaw, Kate (6 November 2018). "Dumbarton rail project to get full environmental, fiscal analysis". The Almanac. Retrieved 10 November 2018.
^ abCite error: The named reference SFCall-1910-09-25 was invoked but never defined (see the help page).
^ abCite error: The named reference SFCall-1910-09-01 was invoked but never defined (see the help page).
^Kazak, Don (1998-01-07). "FIREFIGHTERS: Dumbarton rail bridge destroyed". Palo Alto Online. Archived from the original on 2004-08-14. Retrieved 2015-05-25.
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