CESMD |
Information for Strong-Motion Station |
South San Francisco - Sierra Pt Overpass |
CGS - CSMIP Station 58536 |
Earthquakes recorded by this station |
Latitude | 37.6746 N |
Longitude | 122.3895 W |
Elevation (m) | 6 |
Site Geology | |
Vs30 (m/sec) | |
Site Class |
No. of Spans | 10 |
Plan Shape | Straight with skewed abutments. |
Total Length | 616' (187.8m). Bridge spans range from 60' (18.3m) to 104' (31.7m). |
Width of Deck | 117' (35.7m). |
Construction Date | 1957 |
Instrumentation | 1985. 13 accelerometers on the bridges. 3 accelerometers at a free-field site. |
Superstructure Type | Concrete deck slab on steel I-beams supported by lead rubber isolation bearings. |
Substructure Type | Circular concrete columns. 1 to 4 columns per bent. |
Foundation Type | Spread footings. |
Remarks | This bridge was instrumented at the time of seismic retrofitting in 1985. |