CESMD

Information for Strong-Motion Station

San Francisco - Bay Bridge/West

CGS - CSMIP Station 58632

Earthquakes recorded by this station

Ambient Records for CE58632

 

(Station Photograph - click to enlarge)	(Sensor Layout - click to see PDF File)

   

Latitude	37.7982 N
Longitude	122.3774 W
Elevation (m)	--
Site Geology
Vs30 (m/sec)
Site Class

 

No. of Spans	7
Plan Shape	Straight.
Total Length	10292' (3137.0m). Bridge spans range from 861' (262.4m) to 2310' (704.1m).
Width of Deck	60' (18.3m) to 72' (21.9m)
Construction Date	1936
Instrumentation	1993 (pre-retrofit): 6 accelerometers on the bridge. Post-retrofit: 76 accelerometers and 3 relative displacement sensors on the bridge. 3 accelerometers at a free-field site. 6 accelerometers at downhole locations.

 

Superstructure Type	Steel truss deck supported by steel suspension cables.
Substructure Type	Steel plated columns with vertical bracing. 2 columns at each tower.
Foundation Type	Concrete piers founded on bedrock.
Remarks	This bridge was instrumented under the interagency agreement between Caltrans and DOC. The bridge is composed of two 3-span cable suspended structures with a common cable anchorage at the center.