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| (Station Photograph - click to enlarge) | (Sensor Layout - click to see PDF File) |
| CESMD |
| Information for Strong-Motion Station |
| Benicia - Martinez/I680 East Bridge |
| CGS - CSMIP Station 68322 |
| Earthquakes recorded by this station |
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| (Station Photograph - click to enlarge) | (Sensor Layout - click to see PDF File) |
| Latitude | 38.0441 N |
| Longitude | 122.1229 W |
| Elevation (m) | -- |
| Site Geology | |
| Vs30 (m/sec) | |
| Site Class |
| No. of Spans | Main Bridge: 16; Approaches: 6 & 5 |
| Plan Shape | Main Bridge: Straight and curved; Approaches: Curved |
| Total Length | Main Bridge: 2265.9m; Approaches: 432.5m & 253.9m |
| Width of Deck | Main Bridge: 25.07m; Approached: 17.87m & 12.77m |
| Construction Date | 2007 |
| Instrumentation | 2007. 59 sensors on the main bridge, and 24 & 12 sensors on the approach structures. |
| Superstructure Type | Lightweight prestressed concrete box girder with normal-weight concrete pier table. The box girder is single cell with transverse stiffening ribs at the Main Bridge, single- and double-cell at approaches. The Main Bridge consists of four frames, while the approaches have one and two frames, respectively. |
| Substructure Type | Concrete piers and bents; 1-2 columns per bent. |
| Foundation Type | Main Bridge: Piers 6-17 are supported by 8 or 9 piles. Each pile is installed by using 2.5m diameter steel casing driving into the bedrock and a 2.2m diameter CIDH piles socketed into rock |
| Remarks | This bridge was instrumented during construction under the interagency agreement between Caltrans and DOC. |