San Francisco-Oakland Bay Bridge
The Bay Bridge - West Spans
Photo taken by Michael Goff on April 20, 2008
BH Photo #122015
The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, serving as the terminus of an interstate highway and as the linchpin for the transportation network of the San Francisco Bay Area, one of the nation's largest metropolitan regions. The bridge has been recognized by the American Society of Civil Engineers as a nationally significant structure from the standpoint of engineering as well as its importance in the transportation history of California and the nation. The Bay Bridge was also a milestone in the political history of the Bay Area. The history of the Bay Area is filled with controversies over transportation projects, from the 19th century debates over subsidies to the railroads, continuing through the freeway revolt of the 1950s and seemingly endless debates between supporters of transit and highway development in more recent decades. The long debate over construction of the Bay Bridge is remarkable for the fact that the people of the Bay Area and their political leaders united behind it with almost unanimous support. People may disagree as to whether the Bay Bridge is more important for its engineering, its role in transportation history or for its importance in the politics of the area. The structure is highly significant in all of these different ways.
- Historic American Engineering Record
- Suspension bridge over San Francisco Bay on I-80 connecting San Francisco, Yerba Buena Island, and Oakland
- San Francisco, San Francisco County, California, and Alameda County, California
- Open to traffic
- Built 1936; Key System tracks removed 1958; rehabilitated 1962; partial collapse 1989; west span siesmic retrofit 2013; east span replaced 2013.
- - Charles E. Andrew (Bridge Engineer)
- Charles H. Purcell (Chief Engineer)
- General Construction Co. of Federal Way, Washington (Contractor)
- Moran and Proctor of New York, NY (Center suspension anchorage)
- Public Works Administration
- Ralph Modjeski of Bochnia, Poland (Consulting Engineer)
- - Interurban
- Interurban Electric Railway (IER)
- Key System
- Sacramento Northern Railway (SN)
- Suspension bridge, tunnel under Yerba Buena Island, and self-anchored suspension bridge, with concrete deck girder approach spans at east end.
Length of largest span: 1,400.0 ft.
Total length: 22,655.0 ft. (4.3 mi.)
Deck width: 58.1 ft.
Vertical clearance above deck: 14.0 ft.
Posted to the National Register of Historic Places on August 13, 2001
- Also called
- Emperor Norton Bridge - never approved
James "Sunny Jim" Rolph Bridge - very unofficial
The Bay Bridge
- Approximate latitude, longitude
- +37.81167, -122.36167 (decimal degrees)
37°48'42" N, 122°21'42" W (degrees°minutes'seconds")
- Approximate UTM coordinates
- 10/556187/4185111 (zone/easting/northing)
- Quadrangle map:
- Oakland West
- Average daily traffic (as of 1997)
- Inventory numbers
- CA 33-25 (California bridge number)
NRHP 00000525 (National Register of Historic Places reference number)
BH 10802 (Bridgehunter.com ID)
- Inspection report (as of December 2012)
- Overall condition: Fair
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Good (7 out of 9)
Deck condition rating: Fair (5 out of 9)
Sufficiency rating: 57 (out of 100)
View more at BridgeReports.com
- January 18, 2020: New photos from Geoff Hubbs
- June 13, 2019: Updated by Clark Vance: Added category "Moran and Proctor"
- May 11, 2018: New photo from Leslie R trick
- April 11, 2018: New photos from Richard Doody
- November 10, 2017: New photos from Christopher Finigan
- March 5, 2017: New photos from Daniel Barnes
- March 5, 2017: Updated by Christopher Finigan: Added category "Public Works Administration"
- November 22, 2016: New photo from Sean Dickinson
- November 17, 2016: New Street View added by Luke
- January 16, 2016: New photos from Sean Dickinson
- January 12, 2015: Updated by Dave King: Added HAER description
- October 27, 2014: New photos from Sean Dickinson
- September 7, 2014: New photo from Luke
- September 6, 2014: New photos from Royce and Bobette Haley
- November 26, 2013: New photos from Sean Dickinson
- September 3, 2013: Updated by Roger Deschner: Replacement eastern span has been opened to traffic.
- August 11, 2013: Updated by Luke Harden: Added categories "Sacramento Northern Railway", "Interurban", "Railroad", "Rail-to-road", "Rail-and-Road"
- April 9, 2013: New photo from Sean Dickinson
- December 8, 2012: New photos from Sean Dickinson
- May 22, 2012: New photos from Sean Dickinson
- November 26, 2011: Removed duplicate listing; placed in both San Francisco and Alameda counties
- November 6, 2011: New photos from Craig Philpott
- November 4, 2011: New photos from Craig Philpott
- August 27, 2011: New photos from Sean Dickinson
- January 9, 2011: New photo from Craig Philpott
- September 29, 2010: New Street View added by Craig Philpott
- September 25, 2010: New photos from Craig Philpott
- August 14, 2010: New photos from Craig Philpott
- March 21, 2010: New photos from Craig Philpott
- February 17, 2010: New photo from Craig Philpott
- June 5, 2009: Updated by Kim Harvey: Future Prospects, adding HAER photos
- August 19, 2008: New photos from Michael Goff
- July 4, 2008: Updated by Kim Harvey: added link of replacement bridge being built
- March 30, 2008: Updated by J.R. Manning: Added Bridge to "Lincoln Highway" Category