March 4, 2026
INVITATION TO BID
BL057-26
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.
Bids should be typed or submitted in ink and returned in a sealed container marked on the outside with the BL# and
Company Name. Bids will be received until 2:50 P.M. local time on March 20, 2026, at the Gwinnett County Financial
Services - Purchasing Division – 2nd Floor, 75 Langley Drive, Lawrenceville, Georgia 30046. Any bid received after this
date and time will not be accepted. Bids will be publicly opened and read at 3:00 P.M. The bid opening will be virtual
ONLY. To access the bid opening virtually, visit the following Webex virtual meeting link
(https://gwinnettgov.webex.com/gwinnettgov/j.php?MTID=m6dd38605d4ca33e16bbf01b6671ff4dc), or dial 408-418-
9388, and enter Conference ID 2339 296 4255## . Apparent bid results will be available the following business day on
our website www.gwinnettcounty.com.
Questions regarding bids should be directed to Alexis Mckennery, CPPB, Purchasing Manager at
Alexis.Mckennery@GwinnettCounty.com, no later than 3:00 P.M. on March 12, 2026. Bids are legal and binding upon
the bidder when submitted.
Successful contractor will be required to meet insurance requirements. The Insurance Company must be authorized to
do business in Georgia by the Georgia Insurance Department, and must have an A.M. Best rating of A-7 or higher.
Gwinnett County does not discriminate on the basis of disability in the admission or access to its programs or activities.
Any requests for reasonable accommodations required by individuals to fully participate in any open meeting, program
or activity of Gwinnett County Government should be directed to ADA Director, Gwinnett County Justice and
Administration Center, 770-822-8165.
The written bid documents supersede any verbal or written prior communications between the parties.
Award will be made to the contractor submitting the lowest responsive and responsible bid. Gwinnett County reserves
the right to reject any or all bids to waive technicalities and to make an award deemed in its best interest. Bids may be
split or awarded in entirety. Gwinnett County reserves the option to negotiate terms, conditions and pricing with the
lowest responsive, responsible bidder(s) at its discretion.
Award notification will be posted after award on the County website, www.gwinnettcounty.com and companies
submitting a bid will be notified via email.
We look forward to your bid and appreciate your interest in Gwinnett County.
Alexis Mckennery
Purchasing Manager
The following pages should be returned in duplicate as part of your bid:
Bid Schedule, Pages 10-11
References, Page 12
Subcontractor List, Page 13
Code of Ethics, Page 18
E-Verify, Page 19
BL057-26
Specifications
Page 2
SECTION A:
1.
GENERAL REQUIREMENTS
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.
2.
Time
Contract time will be from the date of award for a period of one year with three (3) options to renew.
However, for any order to install and/or repair asphaltic speed humps, forwarded to the contractor
on or before the contract expiration date, the contractor will be required to perform such work within
a time agreed upon by both parties and at the contract price.
3. Location and Site
a.
Work sites will be throughout Gwinnett County on an as needed basis.
b.
The contractor shall accept the sites in their present condition and carry out all work in
accordance with the requirements of the specifications or as directed by Gwinnett County.
c.
Prior to beginning work the contractor is advised to visit the sites and acquaint him/herself
with the actual conditions and location of any or all obstructions that may exist on the site.
d.
The contractor is responsible for the location of above or below ground utilities and
structures which may be affected by the work.
4.
Standards and Regulations
a. Occupational Safety and Health Administration (OSHA)
The work connected with this contract shall be performed in accordance with all applicable OSHA
regulations and standards including any additions or revisions thereto until the job is completed
and accepted by Gwinnett County.
BL057-26
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6.
7.
8.
9.
10.
11.
b. Georgia Department of Transportation
Page 3
Unless otherwise directed, all work performed under contract shall be in accordance with the
Georgia Department of Transportation Standard Specifications, Construction of Transportation
System, current Edition, and any supplemental specification modifying them except as noted below
and in the special provisions.
Materials
All materials furnished and/or installed by the contractor shall be from sources certified by the
Georgia Department of Transportation, and shall meet all specifications set forth by the Georgia
Department of Transportation (GDOT). Cap blocks must meet ASTM standards. All records, receipts,
test results and certifications shall be kept for the life of the contract and for three years thereafter.
Gwinnett County’s standard for the asphaltic surface course of 1.25 inches of 9.5 mm Superpave
Type II shall be applied.
Inspection
Gwinnett County does not commit to furnishing full-time inspection or testing of the work in progress,
or at material sources. Absence of inspection and/or testing by the County will in no way relieve the
contractor of his responsibility and liability to provide quality workmanship in accordance with the
Specifications.
Progression of Work
Contractor shall complete maintenance and pavement marking work within 30 business days of
receiving written notice, and speed hump construction shall start within 30 business days. In most
cases this will be posting the advance warning signs in accordance with the Manual on Uniform
Traffic Control Devices (MUTCD) and all appropriate utility locates plus starting construction on the
first speed hump. As needed, speed hump construction will be considered started when a changeable
message sign is posted. Also as needed, the County reserves the right to request a specific start date.
The contractor must carry on with utmost diligence in order to complete the work at the earliest
possible date. For failure to complete the work within the time agreed upon in the work authorization,
the contractor shall pay Gwinnett County $250.00 in liquidated damages for each calendar day in
excess of the contract time until the project is considered substantially complete by the County. The
contractor shall provide the County with at least a 24-hour notice in writing before proceeding or of
any change in the work schedule.
Keeping the Road Open to Traffic
The work shall be performed in such manner as to maintain at least one lane of traffic at all times.
Contractor shall phase his construction such that traffic across the completed work shall be minimal
until such time that the asphalt has sufficiently cooled and paint sufficiently dried to prevent damage
to the work. Contractor will limit his hours of operation to avoid peak hour traffic and weekend work,
unless a written waiver has been granted by Gwinnett County.
Traffic Control
The contractor shall furnish, install, maintain and remove all necessary traffic signs, barricades,
lights, signals, cones and other traffic control devices; and all flagging and other means of traffic
protection and guidance as required by the Standard Specifications of the Georgia Department of
Transportation, and the Manual on Uniform Traffic Control Devices. Such work shall be considered
incidental to the overall contract, and no additional compensation will be made.
Work Area
Upon completion of any work, the contractor will sweep the area and remove and dispose of all
debris/material.
Records
The contractor is required to maintain and make available to Gwinnett County and auditors,
complete records of the work covered, for the life of the contract and for three years thereafter.
BL057-26
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13.
14.
15.
SECTION B:
Page 4
Payment
Work shall be paid for at the unit price when complete and shall include all required traffic control,
cleanup work, tack coat material and application, asphalt concrete material and placement and
other incidental work.
Individuals, contractors and businesses seeking an award of a Gwinnett County contract may not
initiate or continue any verbal or written communications regarding a solicitation with any County
officer, elected official, employee or other County representative without permission of the
Purchasing Associate named in the solicitation between the date of the issuance of the solicitation
and the date of the final contract award by the Board of Commissioners. Violations will be reviewed
by the Purchasing Director. If determined that such communication has compromised the
competitive process, the offer submitted by the individual, firm or business may be disqualified from
consideration for award.
No bid bond is required for this contract.
This contract does not require a General Contractor’s License.
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.
BL057-26
Page 5
whose finished grade exceeds the allowable 1/4" tolerance will be removed and replaced by the
contractor, at no additional cost to Gwinnett County.
h. 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.
i. 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.
j. 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.
2.
Signs and Markings
a. The contractor shall install pavement markings and traffic control signs in accordance with the
attached Figure 2. Installation of pavement markings and signs to be considered in the bid for
this speed hump installation line item, and will not be paid separately.
b. All pavement markings shall be thermoplastic and will be supplied by the contractor. All markings
are to contain glass spheres for reflectivity. The dry markings will have a thickness of 90 mils. All
pavement markings shall be laid out by the contractor as shown in Figure 2. Certification of
thermoplastic material shall meet Georgia DOT specs section 653, Thermoplastic Traffic Stripe.
The application of the thermoplastic material needs to be at 400 degrees. Pre-made markings
must be approved in advance by Gwinnett County.
c. All markings are to be thermoplastic material. All thermoplastic markings are to be applied at
required dimensions and be reflective without tracking of material. All thermoplastic markings
are to be guaranteed for one year. Material failure during the first year will result in the contractor
reapplying the markings at no cost to Gwinnett County.
d. The contractor shall place one (1) “Speed Hump Ahead” sign at the entrance to each established
district, unless otherwise instructed by the County. See Figure 3.
e. Posts shall be driven into ground, not set in concrete.
f. The County will supply all signs and posts for installation as referenced in above items d and e.
g. Signs shall be installed by contractor or sub-contractor no sooner than forty-eight (48) hours
before hump installation and no later than (8) eight hours after hump installation.
h. If requested by Gwinnett County, changeable message signs (CMS) may be required. The start
of work for this location will be considered when the requested CMS are placed on site. CMS will
be provided for at least seven days. This item will be paid per sign per seven days.
SECTION C:
Speed Hump Marking
a. All work under this pay item will consist of re-marking existing speed humps as shown in
the attached Figure 2, paid per speed hump.
b. 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.
c. Pavement markings will be installed consistent with Section B.2. Subject to change based on
MUTCD standards.
This is the opportunity summary page. It provides an overview of this opportunity and a preview of the attached documentation.