Information for Strong-Motion Station
Rio Dell - Hwy 101/Painter St. Overpass
CGS - CSMIP Station 89324
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 40.5031 N
Longitude 124.1009 W
Elevation (m) 43
Site Geology Shallow fill/alluv over rock (sandstone)
Vs30 (m/sec) 312 (measured)
Site Class D
Remarks Site information sources
No. of Spans2
Plan ShapeStraight with skew.
Total Length265' (80.8m). Bridge spans are 119' (36.3m) and 146' (44.5m).
Width of Deck52' (15.8m)
Construction Date1976
Instrumentation1977. 17 accelerometers on the bridge and 3 accelerometers at a free-field site.
Superstructure TypeContinuous concrete box girder. Diaphragm abutments.
Substructure TypeCircular concrete columns. 2 columns per bent.
Foundation TypeConcrete piles.
RemarksSeveral strong-motion records have been obtained from this bridge since the installation in 1977.