CESMD

Information for Strong-Motion Station

Eureka - Middle Channel Bridge

CGS - CSMIP Station 89735

Earthquakes recorded by this station

 

(Station Photograph - click to enlarge)	(Sensor Layout - click to see PDF File)

   

Latitude	40.8136 N
Longitude	124.1594 W
Elevation (m)	--
Site Geology
Vs30 (m/sec)
Site Class

 

No. of Spans	9
Plan Shape	Straight
Total Length	1082' (329.8m). Bridge spans range from 120' (36.6m) to 121' (36.9m) long.
Width of Deck	34' (10.4m)
Construction Date	1971
Instrumentation	1996. 6 accelerometers on the bridge. 3 accelerometers at a free-field site.

 

Superstructure Type	Concrete I-girders supported on concrete bents and concrete seat abutments.
Substructure Type	Hexagonal concrete columns. 1 column per bent.
Foundation Type	Concrete piles.
Remarks	This bridge was instrumented under the interagency agreement between Caltrans and DOC.