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Printed on:Thursday 10/03/2024 11:12 AM 29C0352/AAAR/136928Pageof5 Department of Transportation - Division of Maintenance Structure Maintenance & Investigations 6 DESCRIPTION UNDER STRUCTURE CHANNEL DESCRIPTION Trapezoidal shaped, concrete lined. TYPE OF SERVICE UNDER N NOT APPLICABLE (NBI)UNDERCLEARANCES V - H 9 ABOVE DESIRABLEWATER ADEQUACY MVERT-LIFT BRIDGE NAV MIN VERTICAL CLEAR NAVIGATION CONTROL 0.0 MNAVIGATION HORIZONTAL CLEARANCE 0.0 MNAVIGATION VERTICAL CLEARANCE PIER PROTECTION 0: NO CONTROL5-WATERWAY 8 STABLE ABOVE FOOTINGSCOUR N/ASCOUR POA DATE CHANNEL PROTECTION 8 PROTECTED N/A (42b) (69) (71) (61) (113) (38) (111) (39) (116) (40) Delamination/Spall/Patched Area 2 45 each 0 0 45 0 SUPERSTRUCTURE ELEMENT INSPECTION RATINGS AND NOTES 1080 SUBSTRUCTURE ELEMENT INSPECTION RATINGS AND NOTES SUPERSTRUCTURE SUBSTRUCTURE SUPERSTRUCTURE RATING =(59) 4 SUBSTRUCTURE RATING =(60)5 (110) Girder/Beam-RC (110-1080) Delamination/Spall/Patched Area Routine Inspection Element Notes: Routine Inspection Element Notes: Element DescriptionElem No. Env Total Qty Units CS 1 CS 2 CS 3 CS 4 Qty in each Condition StateDefect/ Prot Defect Element DescriptionElem Env Total Units Qty in each Condition StateDefect/ Due to high water levels this element was not inspected during this investigation. Due to high water levels this element was not inspected during this investigation. Delaminations/Spalls in the girders were observed at the following locations: Span 1: Girders 3 and 4: There are multiple vertical spalls/delaminations that span up to 30 feet. Girder 3 delaminations are on the Bay 2 side and Girder 4 delaminations are on the Bay 3 side of the girder. There is exposed rebar that exhibit varying degrees of section loss. See Photos 7 and 8 dated 11/30/2022. Span 2: Girders 1, 3 and 4: There are multiple vertical spalls/delaminations that span up to 40 feet. Girder 1 delaminations are on the Bay 1 side, Girder 3 delaminations are on the Bay 2 side and Girder 4 delaminations are on the Bay 3 side of the girder. There is exposed rebar that exhibit varying degrees of section loss. See Photo 9 dated 11/30/2022. Span 3: Girders 3 and 4: There are multiple vertical spalls up to 12 inches tall with exposed rebar exhibiting varying degrees of section loss. There is an outstanding work recommendation dated 4/27/2006 for the repair of these spalls. Non-Routine Inspection Element Notes: Non-Routine Inspection Element Notes: It was stated in the 05/08/2014 Underwater Inspection Report that the lower portion of the girders have light to moderate abrasion. This abrasion exposes large aggregate throughout but the aggregate appears sound. See Photos 1-3 dated 06/26/2018. As there is no abrasion defect for girders, no downgrade is warranted at this time. Additionally, two spalls were observed on the Span 2 face of the Pier 2 diaphragm with exposed and lightly rusted rebar. One spall is 4 inches by 12 inches by 1 inch deep and the other is 6 inches by 6 inches by 1 inch deep. The 04/27/2006 Bridge Inspection Report stated the bottom of the Pier 2 diaphragm has a 16 inch by 2 inch spall with exposed and rusted rebar within Bay 1. In addition, the bottom of the Pier 3 diaphragm has a 12 inch by 1 inch incipient spall as well as a 4 inch by 3 inch spall with exposed rebar near Girder 1. The 05/08/2014 Underwater Inspection Report referred to these spalls as being on the Span 3 side. UWI (05/28/2020): See Table 3 of the report from AECOM. There are 104 lineal feet (32 meters) of girder spalls with associated exposed reinforcing with section loss. A hands-on inspection of exposed reinforcing steel was not possible by the diver.