CESMD
Information for Strong-Motion Station
South San Francisco - Sierra Pt Overpass
CGS - CSMIP Station 58536
Earthquakes recorded by this station
 
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
   
Latitude 37.6746 N
Longitude 122.3895 W
Elevation (m) 6
Site Geology  
Vs30 (m/sec)  
Site Class  
 
No. of Spans10
Plan ShapeStraight with skewed abutments.
Total Length616' (187.8m). Bridge spans range from 60' (18.3m) to 104' (31.7m).
Width of Deck117' (35.7m).
Construction Date1957
Instrumentation1985. 13 accelerometers on the bridges. 3 accelerometers at a free-field site.
 
Superstructure TypeConcrete deck slab on steel I-beams supported by lead rubber isolation bearings.
Substructure TypeCircular concrete columns. 1 to 4 columns per bent.
Foundation TypeSpread footings.
RemarksThis bridge was instrumented at the time of seismic retrofitting in 1985.