REHABILITATION AND IMPROVEMENT OF THE ARKANSAS RIVER LIFT BRIDGE, MP 410.6 JOB SPECIAL PROVISIONS FY2017 TIGER GRANT NO. 157600102 FRA GRANT AGREEMENT NO. 69A36520401680TIIAR July 23, 2021 Arkansas River Lift Bridge, MP 410.6 Table of Contents Page General Special Provisions ........................................................................................... 1 Maintaining Railroad Operations ...................................................................................... 1 Coordination of Marine Navigation ................................................................................... 4 Electrical Special Provisions ........................................................................................ 7 Electrical Rehabilitation .................................................................................................... 8 Mechanical Special Provisions .................................................................................... 59 M100 – General Mechanical Specifications ..................................................................... 60 M101 – Sheaves, Trunnions, Bearings ........................................................................... 81 M102 – Counterweight Wire Ropes ................................................................................. 84 M103 – Counterweight Balancing.................................................................................... 89 M104 – Machinery Bearing Liners ................................................................................... 93 M105 – Wire Rope Socket Keepers ................................................................................ 95 M106 – Aux Drive Shifter Assembly ................................................................................ 97 M107 – Machinery Brake ................................................................................................ 99 M108 – Span Guide ....................................................................................................... 101 M109 – Main Motor ........................................................................................................ 103 M110 – Motor Brake ...................................................................................................... 105 M111 – Bevel Gear Plate ............................................................................................... 107 M112 – Gearbox Seal .................................................................................................... 108 M113 – Uphaul Rope Deflector Sheave Bolt .................................................................. 110 M114 – Acceptance Testing ........................................................................................... 111 M115 – Training and Supervised Operation ................................................................... 113 M116 – Operation and Maintenance Manual .................................................................. 114 M117 – Span Locks ....................................................................................................... 120 Structural Special Provisions ..................................................................................... 122 Counterweight Jacking and Support ............................................................................... 123 Bearing Replacement..................................................................................................... 125 Foundation Protection Riprap ......................................................................................... 130 Dumped Riprap .............................................................................................................. 131 Bridge Interlocking and Signals Specifications ......................................................... 133 34 42 23 Railway Signal Control Equipment .................................................................. 134 34 42 44 Signal Engineering Requirements ................................................................... 170 34 42 45 Signal Installation Requirements ..................................................................... 173 i Arkansas River Lift Bridge, MP 410.6 GENERAL SPECIAL PROVISIONS 1 Arkansas River Lift Bridge, MP 410.6 MAINTAINING RAILROAD OPERATIONS a. General Requirements. All railroad tracks within and adjacent to the Contract Site are active, and rail traffic over these facilities shall be maintained throughout the Project. Railroad traffic and operations will occur continuously and in either direction throughout the day and night on these tracks, except during the work windows described below. The Contractor shall become familiar with the train schedules at this location and shall coordinate and schedule the work so that construction activities do not interfere with railroad operations, except as noted herein. b. Work Windows. Work windows for this Contract shall be coordinated with the Arkansas and Missouri Railroad’s Designated Representative. Types of work windows include Absolute Work Windows and Conditional Work Windows, as defined below: 1. Absolute Work Window. An Absolute Work Window is a period that construction activities are given priority over railroad operations. During this time frame the designated railroad track will be inactive for train movements and may be fouled by the Contractor. At the end of an Absolute Work Window the railroad track and/or signals must be completely operational for train operations and comply with all Arkansas and Missouri Railroad (AMRR) and Federal Railroad Administration requirements, codes, and regulations for operational tracks. Absolute Work Windows may be scheduled during the week, Monday through Friday, from 8:00 a.m. till 3:00 p.m., and on the weekends starting at 5:00 a.m. on Saturday morning through 7:00 a.m. Monday morning. 2. Conditional Work Window. A Conditional Work Window is a period that railroad operations have priority over construction activities. When construction activities may occur on and adjacent to the railroad tracks within 25 feet of the nearest track, an AMRR flag person will be required. The AMRR flag person will be provided, as needed during construction, to the Contractor at no cost. At the direction of the AMRR flag person, upon approach of a train, and when trains are present on the tracks, the tracks must be cleared (i.e., no construction equipment, materials, or personnel within 25 feet, or as directed by the AMRR Designated Representative, from the tracks). Conditional Work Windows are available for the Project. The Contractor shall make written requests for both Absolute and Conditional Work Windows at least two weeks (14 days) in advance of work. The written request must include a detailed work plan, including a description of the work to be performed, the exact location of the work, a schedule of activities, and the type of window requested. c. Bridge Closures. When work will require the bridge to be closed to train traffic for a period that exceeds the allowable duration of the Absolute Work Windows, the Contractor shall submit a detailed work plan for a requested bridge closure. The work plan for a bridge closure will include a Gantt chart showing planned activities at hourly intervals. Work plans shall be submitted to the AMRR for review and approval no less than 30 days prior to the start date of the requested closure. 2 Arkansas River Lift Bridge, MP 410.6 d. AMRR Contact Person. The designated representative from the AMRR for this rehabilitation project is: Mr. Jeromy Houchin Arkansas and Missouri Railroad 306 East Emma Springdale, AR 72764 Office: (479) 751-8600 Cell: (479) 790-0647 Email: [email protected] e. Measurement and Payment. All costs incurred by the Contractor in complying with the above requirements shall be considered as completely covered by the prices bid for the various items of work included in the contract. 3 Arkansas River Lift Bridge, MP 410.6 COORDINATION OF MARINE NAVIGATION a. Description. This work consists of conforming all operations in the waterway to the requirements or directions of the U.S. Coast Guard and the U.S. Army – Corps of Engineers. b. Construction Requirements. 1. Signing. Four channel warning signs shall be securely erected, one on each channel bank upstream and downstream of the Arkansas and Missouri Railroad Lift Bridge at 500 feet from the centerline of the bridge. The signs shall be a minimum of 4 feet by 8 feet exterior grade, ¾-inch thick plywood and shall be painted with two coats of exterior grade white enamel paint. The lettering shall be painted with black exterior grade paint. The letters shall be a minimum of 8 inches high, using uppercase block lettering indicating “Overhead Bridge Construction 500 Feet Ahead”. 2. Observer. Whenever construction is in operation over the navigation channel, the Contractor shall provide one observer to be positioned to watch for oncoming marine vessels from either direction. An audible signal shall be sounded for all work over the channel to cease when a marine vessel is 500 feet from the bridge. An all-clear signal shall be sounded when the vessel has passed the construction area and work may resume. The observer shall have a radio that can be used to communicate with the marine vessel. The Contractor shall notify the Contractor’s bridge operator whenever workers are in a position to be affected by marine traffic. The bridge operator will notify the Contractor’s observer that vessels are approaching and from which direction. All work,