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| (Station Photograph - click to enlarge) | (Sensor Layout - click to see PDF File) |
| CESMD |
| Information for Strong-Motion Station |
| Long Beach - Gerald Desmond Bridge |
| CGS - CSMIP Station 14703 |
| Earthquakes recorded by this station |
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| (Station Photograph - click to enlarge) | (Sensor Layout - click to see PDF File) |
| Latitude | 33.7646 N |
| Longitude | 118.2212 W |
| Elevation (m) | -- |
| Site Geology | Deep alluvium |
| Vs30 (m/sec) | 225 (measured) |
| Site Class | D |
| Remarks/Notes | Site information sources |
| No. of Spans | 3 (Main Span) |
| Plan Shape | Straight (Main Span) |
| Total Length | 2000\' (Main Span) |
| Width of Deck | 156\' (Main Span) |
| Construction Date | 2020 |
| Instrumentation | 2020. 62 accelerometers on the bridge, and 12 accelerometers at a reference geotechnical array |
| Superstructure Type | Main Span: Steel-concrete composite ladder beam deck system supported by stay cables. Superstructure is fully isolated from substructure by viscous dampers at both towers and end bents. East Approach: post-tensioned concrete box girders |
| Substructure Type | Main Span: Hollow reinforced concrete mono-pole towers. East Approach: Hollow reinforced concrete bents. |
| Foundation Type | Concrete pile caps with CIDH concrete piles. |
| Remarks | This bridge is California\'s first long-span cable-stayed bridge, and one of the tallest bridges of its kind in the United States. This bridge replaces the old Gerald Desmond Bridge. It is instrumented under the interagency agreement between Caltrans and Dept. of Conservation. |