Information for Strong-Motion Station
Rohnert Park - Hwy 101 Bridge
CGS - CSMIP Station 68717
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 38.3484 N
Longitude 122.7130 W
Elevation (m) 26
Site Geology  
Vs30 (m/sec)  
Site Class  
No. of Spans2
Plan ShapeStraight.
Total Length282' (86.0m). Bridge spans are 141' (43.0m) each.
Width of Deck60' (18.3m)
Construction Date1973
Instrumentation1995. 9 accelerometers on the bridge. 3 accelerometers at a free-field site.
Superstructure TypeContinuous concrete box girder. Sliding diaphragm abutments with elastomeric bearings and shear keys.
Substructure TypeSemicircular concrete columns with flares in the upper portion. 2 columns per bent.
Foundation TypeConcrete piles support the abutments and bents.
RemarksThis bridge was instrumented under the interagency agreement between Caltrans and DOC.