Information for Strong-Motion Station
Vallejo - Carquinez/I80 West Bridge
CGS - CSMIP Station 68185
Earthquakes recorded by this station
Ambient Records for CE68185
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 38.0610 N
Longitude 122.2265 W
Elevation (m) --
Site Geology  
Vs30 (m/sec)  
Site Class  
No. of SpansSuspension Bridge: 3; Approach Structures: 7 & 5
Plan ShapeSuspension Bridge: Straight; Approach Structures: Curved
Total LengthSuspension Bridge: 3465' (1056m); Approach Structures: 496.5m & 173.3m
Width of DeckSuspension Bridge: 89' (27.2m)
Construction Date2003
Instrumentation2004. 76 sensors on the suspension bridge and 27 sensors on the approach structures.
Superstructure TypeSuspension Bridge: Steel box girder suspended by steel cables and supported by concrete towers with prestressed concrete struts. Approach Structures: continous concrete box girders with hinges supported on concrete columns.
Substructure TypeSuspenion Bridge: Concrete towers (2-legs). Approach structures: concrete columns; 1-3 columns per bent.
Foundation TypeSuspension Bridge: Concrete pile cap with 3m diameter CISS piles at towers. Approach Structures: CIDH piles
RemarksThis bridge was instrumented under the interagency agreement between Caltrans and DOC.