CESMD |
Information for Strong-Motion Station |
Leggett - Cedar Creek Bridge |
CGS - CSMIP Station 79757 |
Earthquakes recorded by this station |
Latitude | 39.8485 N |
Longitude | 123.7019 W |
Elevation (m) | 257 |
Site Geology | |
Vs30 (m/sec) | |
Site Class |
No. of Spans | 7 |
Plan Shape | Straight. |
Total Length | 607' (185.0m). Bridge spans range from 46.5' (14.2m) to 49.5' (15.1m) long, with one 320' (97.5m) main span. |
Width of Deck | 28' (8.5m) |
Construction Date | 1933 |
Instrumentation | 1998. 9 accelerometers on the bridge. 3 accelerometers at a free-field site. |
Superstructure Type | Concrete T-girders simply supported on concrete piers. One end of each girder has an expansion joint. |
Substructure Type | Center span: concrete columns supported by concrete arch. Other spans: concrete columns. 2 columns per bent. |
Foundation Type | Spread footings. |
Remarks | This bridge was instrumented under the interagency agreement between Caltrans and DOC. A seismic safety gate is installed at the bridge. |