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Printed on:Wednesday 05/07/2025 08:05 AM 29C0022/AABH/152630Pageof13 <br />Department of Transportation - Division of Maintenance Structure Maintenance & Investigations <br />19 <br />602 <br />603 <br />604 <br />605 <br />Balance System - Structural <br />Balance System - Mechanical <br />Operation <br />Drive System - Mechanical <br />Corrosion (Mechanical) <br />Drive System - Electrical <br />Wear(Electrical) <br />2 <br />2 <br />2 <br />2 <br />2 <br />2 <br />2 <br />1 <br />2 <br />2 <br />2 <br />1 <br />2 <br />2 <br />ea. <br />ea. <br />ea. <br />ea. <br />ea. <br />ea. <br />ea. <br /> 1 <br /> 0 <br /> 0 <br /> 1 <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br /> 1 <br /> 1 <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br /> 2 <br /> 2 <br /> 0 <br /> 2 <br /> 2 <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br />MECHANICAL/ELECTRICAL ELEMENT INSPECTION RATINGS AND NOTES <br />9000 <br />9015 <br />9002 <br />MECHANICAL/ELECTRICAL <br />(601-9001) Lubrication <br />(601-9002) Wear(Electrical) <br />(602) Balance System - Structural <br />(603) Balance System - Mechanical <br />(603-9000) Operation <br />(604) Drive System - Mechanical <br />(604-9015) Corrosion (Mechanical) <br />(605) Drive System - Electrical <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 />Non-Routine Inspection Element Notes: <br />Non-Routine Inspection Element Notes: <br />Non-Routine Inspection Element Notes: <br />Non-Routine Inspection Element Notes: <br />Non-Routine Inspection Element Notes: <br />Non-Routine Inspection Element Notes: <br />Non-Routine Inspection Element Notes: <br />Mech/Elect (06/01/2021) The center lock motor and gear reducer tripped off during one of the bridge openings. The bars are dry and <br />not properly lubricated. The fill plug on top of the gear reducer is missing and a rubber glove is being used as a seal. <br />The lock bars and receivers appeared dry and have broken grease lines. The bars bang against the receivers when traffic crosses <br />between spans. The bars have indentations from the constant wear and the amount of play between the receivers and lock bars will <br />continue to increase. <br />The west centerlock gear reducer is missing the top fill plug, the oil level is low. <br />(5/8/2023) Condition still present. <br />Mech/Elect (06/01/2021) Trunnion bearings made a lot a squeaking noise when the bridge was opened, likely due to lack of use and <br />improper lubrication. <br />(5/8/2023) Condition still present. <br />Balance system consists of articulated, reinforced concrete counterweights with hollow recesses on two faces for adjusting the span <br />balance. Each recess is filled with concrete blocks and covered with a steel plate and gasket. Additional counterweight blocks are <br />mounted outside the counterweight on a transverse bracing member. The counterweights remain above the bridge deck during <br />opening for navigation. The reinforced concrete counterweights were in good condition. <br />Balance system consists of reinforced concrete counterweights located below the bridge deck in the bascule pits. Hollow recesses <br />allow for adjusting the span balance with concrete blocks. Additional counterweight blocks are in the bascule pit. The bascule pits <br />each have a single sump pump with a motor mounted on the same level as the heel lock drive machinery. The sump motor drives a <br />shaft down to a submerged pump volute. The sump pumps are 2 HP, 6.4-amp, 220 Volt. <br />Mech/Elect (06/01/2021) The sump pumps in both bascule pits no longer function and the counterweight pits had some water at the <br />time of inspection. <br />(5/8/2023) Condition still present. A portable pump is being used to dewater the sumps. <br />The bridge drive systems are in each machinery area below the bridge deck at the heel of the spans. The drive system consists of <br />an electric motor, enclosed gear reducer, two motor brakes, open gearing, shafts, and bearings. <br />Drive motor: Westinghouse 15 HP, 1150 RPM electric motor with attached motor brake. The drum motor brake is solenoid actuated <br />and affixed to the back of the motor. The second motor brake is affixed to the highspeed output shaft opposing the drive motor. It is <br />a drum type solenoid actuated. <br />The enclosed gear reducer has input from a single motor the low-speed side drives shafts affixed to either side with couplers. The <br />open gear train consists of a series of bull and pinion gears that drive the main drive pinion which drive the rack affixed to the heel of <br />the bascule leaf. Pillow block bearings support the various drive shafts. <br />Mech/Elect (06/01/2021) The open gear teeth need to be coated with grease. There are many dry gear teeth showing wear and <br />corrosion. <br />(5/8/2023) Condition still present.