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Printed on:Monday 10/14/2024 12:40 PM 29C0369/AAAP/136929Pageof6 <br />Department of Transportation - Division of Maintenance Structure Maintenance & Investigations <br />8 <br />DESCRIPTION UNDER STRUCTURE <br />CHANNEL DESCRIPTION <br />Dirt, sand and gravel with light vegetation. Gabion basket check dam at right/downstream side of bridge. Gabion basket slope <br />protection along face of Abutment 3. <br />SUBSTRUCTURE PHOTOGRAPHS <br />TYPE OF SERVICE UNDER <br />N NOT APPLICABLE (NBI)UNDERCLEARANCES V - H <br />6 EQUAL MINIMUMWATER ADEQUACY <br /> MVERT-LIFT BRIDGE NAV MIN VERTICAL CLEAR <br />NAVIGATION CONTROL <br />0.0 MNAVIGATION HORIZONTAL CLEARANCE <br />0.0 MNAVIGATION VERTICAL CLEARANCE <br />PIER PROTECTION <br />0: NO CONTROL5-WATERWAY <br />5 STABLE W/IN FOOTING OR PILESCOUR <br />N/ASCOUR POA DATE <br />CHANNEL PROTECTION 7 MINOR DAMAGE <br />N/A <br />(42b) <br />(69) <br />(71) <br />(61) <br />(113) <br />(38) <br />(111) <br />(39) <br />(116) <br />(40) <br />205 <br />215 <br />234 <br />251 <br />256 <br />Column-RC <br />Abutment-RC <br />Pier Cap-RC <br />Pile-CISS <br />Slope Protection <br />2 <br />2 <br />2 <br />2 <br />2 <br />4 <br />40 <br />12 <br />4 <br />3 <br />each <br />m <br />m <br />ea. <br />ea. <br /> 4 <br /> 40 <br /> 12 <br /> 4 <br /> 3 <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br />SUBSTRUCTURE ELEMENT INSPECTION RATINGS AND NOTES <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br />SUBSTRUCTURE <br />SUBSTRUCTURE RATING =(60)7 <br />(205) Column-RC <br />(215) Abutment-RC <br />(234) Pier Cap-RC <br />(251) Pile-CISS <br />(256) Slope Protection <br />Element DescriptionElem <br />No. <br />Env Total <br />Qty <br />Units <br />CS 1 CS 2 CS 3 CS 4 <br />Qty in each Condition StateDefect/ <br />Prot Defect <br />There were no significant defects noted. <br />There were no significant defects noted. <br />The quantity shown here includes the monolithic RC wingwalls at each abutment. <br />There were no significant defects noted. <br />New scour countermeasures were installed sometime since the 2022 routine inspection. This includes large to medium size angular <br />RSP placed throughout the creek bed and embankment below the structure. There is grouted RSP around all the columns of Pier 2. <br />See Photo 1. <br />Previous scour was noted as follows: <br />The foundation pile below each of the Bent 2 columns is exposed due to scour. A steel collar was placed around each of these <br />columns and filled with loose rocks sometime between the 2011 and 2012 routine inspections. (See Photos 3 and 4 dated <br />10/09/2014). Prior to the placement of the steel collars, the exposure of the foundation piles was measured on 01/30/2011 as up to 24 <br />inches. The rock-filled collars are no longer effective and the columns are exposed as noted below. It should be noted the change in <br />exposure is mostly due to the lack of stacked rock in the collars and not significant stream bed deterioration. A work recommendation <br />has been submitted to re-establish scour countermeasures at the bent. See Photo 4 dated 06/14/2020. <br /> 2014 2016 2018 2020 <br />Column 1: 22 inches 15 inches 18 inches 24 inches <br />Column 2: 20 inches 20 inches 26 inches 22 inches <br />Column 3: 21 inches 23 inches 33 inches 36 inches <br />Column 4: 20 inches 21 inches 28 inches 28 inches <br />This quantity accounts for the new RSP placed throughout the creek bed in front of both abutments and around Pier 2. See Photos 1 <br />to 3.