Provision of Speed Humps on an Annual Contract

2026-11-03

The Gwinnett County Board of Commissioners is soliciting competitive sealed bids from qualified contractors for the Provision of Speed Humps on an Annual Contract with three ( 3 ) options to renew for the Department of Transportation . General Scope This describes the contractual requirements for services associated with the provision , installation , marking and repair of asphaltic speed humps on residential streets throughout Gwinnett County . This is a demand contract to be performed on an annual basis . The quantities of items may be increased or decreased , as necessary , to satisfy the needs of the County . All work to be guaranteed for one year after installation . Any defect in workmanship or failure of materials shall be corrected by the contractor at no additional cost to Gwinnett County . a . Bids will be considered only from experienced and properly equipped contractors engaged in work of this type and scope . Bidding contractor must have documented experience in the installation of speed humps shown in Figures 1 to 3 or similar devices . b . Before accepting any bid , the County reserves the right to require evidence of the contractor ’ s financial ability to successfully perform the work to be accomplished under this contract . c . Gwinnett County reserves the right to award to the overall low or multiple contractors . If awarded to multiple contractors , the scope for each individual project will be identified and presented in a Scope of Work document to the contractor . The contractor shall be required to provide a Not - to - Exceed quote based on the rates provided as part of this bid , as noted in the attached Bid Schedule . That work will generally be assigned based on the cost , but may also include responsiveness to the construction schedule and scope of work on individual projects . d . Subletting of Contract - As provided for in Section 108 , Georgia Department of Transportation Standard Specifications ; the Contractor shall not sublet , sell , transfer , assign , or otherwise dispose of the Contract , or any portion thereof , without written consent of Gwinnett County . INSTALLING ASPHALTIC CONCRETE SPEED HUMPS 1 . Paving Speed Humps The procedure for installing the Asphaltic Concrete Speed Humps ( Figure 1 ) shall be as follows : a . Immediately prior to construction , the contractor shall thoroughly clean the designated locations of all dirt , loose stone and other debris to the satisfaction of Gwinnett County . b . The designated locations shall be tacked , in accordance with Section 413 of the GDOT Standard Specifications , at the rate to be determined by Gwinnett County . Special care shall be taken to avoid spraying the bituminous tack coat on adjacent curbs , driveways and miscellaneous structures . contractor will be responsible for all clean up should such overspray occur . c . Concrete cap blocks shall be set in a straight line , as illustrated in Figure 1 . Unless otherwise approved , all cap block placement must start at the centerline extending out . Blocks shall have a rating of 3000 Pounds per Square Inch ( PSI ) in accordance with American Society for Testing and Materials ( ASTM ) C331 - 04 , Lightweight Aggregates and ASTM C90 - 05 , Load Bearing Concrete . Upon request , the contractor shall provide Gwinnett County with appropriate documentation of certification / testing . Blocks shall be provided on demand to Gwinnett County for testing purposes . All blocks not in compliance with these specifications will be removed and repaired at no cost to the County . d . Contractor shall place 9 . 5 mm Asphaltic Concrete ( Superpave ( SP ) Level A ), to the lines and grades specified for the Flat Topped Speed Hump , as shown in the attached Figure 1 . The placing and rolling operation shall be such that the concrete cap blocks are not displaced , the required compaction is achieved , and the final profile and thickness is within 1 / 4 " tolerance of the grade indicated . Any Speed Hump whose finished grade exceeds the allowable 1 / 4 " tolerance will be removed and replaced by the contractor , at no additional cost to Gwinnett County . e . The contractor shall schedule the work such that an installation at a particular location is completed by the end of the day on which it is started . Speed Humps extending across only one lane will not be permitted to be left overnight . f . Side - slope tapers shall be between six and twelve inches wide from the top of the hump to the edge of pavement ( EOP ) on all road widths . g . Speed humps will typically not exceed 25 feet in width . When placing speed humps on wider lanes , they shall be charged at a per - foot additional price .

Georgia

2026-04-29