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Printed on:Thursday 08/10/2023 12:17 PM 29C0290/AAAW/109129Pageof3 Department of Transportation - Division of Maintenance Structure Maintenance & Investigations 8 SCOPE AND ACCESS All elements listed in the "Underwater Elements Investigated" section of the report were inspected. The inspection of all other elements within the waterway is the responsibility of the ABME. This structure was inspected using surface-supplied diving equipment and techniques. Diving operations were staged from the Caltrans dive vessel "Scow" which was launched from the Paradise Point Marina. This underwater inspection follows the procedures of Section 5.4 of the SM&I Inspection Procedures Manual. SUBSTRUCTURE All submerged surfaces were partially covered with a thin layer of light marine growth which can be easily removed with a gloved hand. These conditions allowed for a 100% Level I inspection and a minimum od 10% Level II inspection of the submerged portions of the elements. For reference purposes, the distance from the water surface to the bottom of the West Girder, in Span 5, was 8.0 ft, at 1414 hrs, on the day of this inspection. The following depths were noted: Bent 2: Column 1: 2.0 feet Column 4: 1.0 feet Bent 3: Column 1: 6.0 feet Column 4: 5.5 feet Bent 4: Column 1: 9.0 feet Column 4: 8.0 feet CS 2 Scour Defect applied to this bent due to unbraced column lengths. Bent 5: Column 1: 9.5 feet Column 4: 11.0 feet Column 3 - CS2 Checking from above the WL to 3 feet below WL. Column 4 - Check 1.0 inch deep extending 6.0 feet up from ML. CS 2 scour defect applied to this bent due to unbraced column lengths. Bent 6: Column 1: 10.0 feet Column 4: 10.0 feet Column 2 - CS2 Check above the WL on the south face and a .50 inch wide X 1.0 inch deep Check on the NW face from WL to ML. Column 3 - A .50 inch wide X 4.0 inches deep check on the south face extending to 3.0 feet below the WL. CS 2 Scour Defect applied to this bent due to unbraced column lengths. Bent 7: Column 1: 10.0 feet Column 4: 10.0 feet Column 1 - Several areas of CS2 Checking, of up to 2.0 inches deep, with one extending several feet below WL. Column 3 - Check up to 6.0 inches deep at the south face. Column 4 - CS 2 check near the top of the column. CS 2 scour defect applied to this bent due to unbraced column lengths. Bent 8: Column 1: 9.0 feet Column 4: 9.0 feet CS 2 scour defect applied to this bent due to unbraced column lengths. Bent 9: Column 1: 7.0 feet Column 4: 7.0 feet CS 2 scour defect applied to this bent due to unbraced column lengths. Cross bracing was spilt/deteriorated at Column 9-4 (reference photo's 1 and 2). Bent 10: Column 1: 5.0 feet INSPECTION COMMENTARY CONDITION INFORMATION