Information for Strong-Motion Station
Hayward - Hwy 580/238 Interchange Bridge
CGS - CSMIP Station 58658
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 37.6907 N
Longitude 122.0993 W
Elevation (m) 49
Site Geology  
Vs30 (m/sec)  
Site Class  
No. of Spans14
Plan ShapeCurved
Total Length2030' (618.7m). Bridge spans range from 92' (28.0m) to 197' (60.0m) long.
Width of Deck54' (16.5m)
Construction Date1988
Instrumentation1993 (7 accelerometers on the bridge and 3 accelerometers at a free-field site); The bridge was reinstrumented in 2011 with 20 accelermeters.
Superstructure TypeConcrete box girders.
Substructure TypeOctagonal concrete columns. 1 to 3 columns per bent.
Foundation TypeBents are supported by concrete CIDH piles or spread footings. Abutments are supported by concrete CIDH piles or steel piles.
RemarksThis bridge was instrumented under the interagency agreement between Caltrans and DOC.