Flashing Yellow Arrow Signal Modifications

Docusign Envelope ID: 48FBBC3D-6DCB-42FD-9112-B28076846707
THE CITY OF THORNTON
9500 CIVIC CENTER DRIVE
THORNTON, CO 80229-4326
Project Manual
For
Construction of
FLASHING YELLOW ARROW SIGNAL MODIFICATIONS
THORNTON PROJECT NO. 23-208
CDOT PROJECT NO. SHO M286-056 / 25527
MAY 2026

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TABLE OF CONTENTS
Table of Contents
Invitation for Bid Proposals
Information for Bidders
Procedure for Contract Signing
Bid Proposal
Contractor's Post-Qualifications
Reference Authorization and Release Form
Post-Qualification Questionnaire
Bidder's Post-Qualification Affidavit
Contract
EXHIBIT A - SPECIAL CONDITIONS
EXHIBIT B - GENERAL CONDITIONS
EXHIBIT C - DRAWINGS (UNDER SEPARATE COVER)
EXHIBIT D - SCHEDULE OF CONTRACT PAY ITEMS AND PRICES
EXHIBIT E - CONTRACTOR'S SUBCONTRACTOR LISTING
EXHIBIT F - PERFORMANCE BOND & LABOR AND MATERIAL PAYMENT BOND
EXHIBIT G - INSURANCE REQUIREMENTS & CERTIFICATE
EXHIBIT H - STANDARD CONCRETE SPECIFICATIONS
EXHIBIT I - SAMPLE NOTICE OF AWARD & NOTICE TO PROCEED
FHWA Form 1273 - Required Contract Provisions, Federal-Aid Construction Contracts
CDOT Standard Special Provisions
Project Special Provisions
Davis Bacon Wage Determination
Appendix
* CDOT Form #606, Anti-Collusion Affidavit
* CDOT Form #1413, Bidders List
* CDOT Form #605, Contractor's Performance Capability Statement
* CDOT Form #621, Assignment of Anti-trust Claims
Addenda
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Docusign Envelope ID: 48FBBC3D-6DCB-42FD-9112-B28076846707
INVITATION FOR BID PROPOSALS
City of Thornton
9500 Civic Center Drive
Thornton, CO 80229-4326
Sealed Bid Proposals for Construction of Flashing Yellow Arrow Signal Modifications, Thornton
Project No. 23-208, CDOT Project No. SHO M286-056 / 25527 will be received in the Contract
Administration Office at the Thornton City Hall (2nd floor), 9500 Civic Center Drive, until 3:00 p.m.,
May 20, 2026. At that time, Bid Proposals will be publicly opened and read aloud.
Note: Late Proposals will not be accepted under any circumstances. Vendors electing to submit
their bid via mail or courier service accept all responsibility for delivery to the Contract
Administration Office by the bid closing time indicated. Thornton is not responsible for lost or late
delivery of bid proposals.
Project Description: The Project consists of modifications to convert existing traffic signal heads
from Protected-Permissive Left Turn (PPLT) to Flashing Yellow Arrow (FYA). This Project is grant
funded through CDOT. The Engineer's Estimate for construction is approximately One Million Five
Hundred Thousand Dollars ($1,500,000). The contract goal for On-the-Job Trainees working in an
approved training plan in this Contract has been established as follows: Minimum number of total
hours required for On the Job Training is 320 hours.
An EEO-1 Report must be submitted to the Joint Reporting Committee if the contractor and
subcontractors meet the eligibility requirements (29CFR 1602.7). For additional information
regarding these federal requirements, please refer to: https://www.eeoc.gov/employers/eeo-1-
data-collection. Davis Bacon Wages are required to be paid on this Project.
The City of Thornton, in accordance with the provisions of Title VI of the Civil Rights Act of 1964
(78 Stat. 252, 42 US.C. 2000d to 2000d-4) and the Regulations, hereby notifies all bidders that
it will affirmatively ensure that any contract entered into pursuant to this advertisement,
disadvantaged business enterprises will be afforded full and fair opportunity to submit bids in
response to this invitation and will not be discriminated against on the grounds of race, color, or
national origin in consideration for any award.
Contractors interested in submitting a Bid Proposal for this Project must at a minimum be pre-
qualified with the Colorado Department of Transportation (CDOT). Copies of CDOT's pre-qualified
Contractor list can be obtained at http://www.dot.state.co.us/Bidding/listings.html.
Thornton utilizes the BidNet Direct System (BidNet) in the advertisement and facilitation of
solicitations. Therefore, respondents must ONLY rely on documents provided on the BidNet Direct
System (BidNet) website: www.BidNetDirect.com.
Thornton utilizes the BidNet Direct System at www.BidNetDirect.com to distribute official copies of
the Drawings and Project Manual ("Bid Documents") for use in preparing Bid Proposals. Bidders
will be required to register with the website to download the Bid Documents and Addenda. There
is no charge by BidNet Direct for this service. If you experience problems with the BidNet Direct
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website, please call 1-800-835-4603 for assistance. Bidders are required to acknowledge all
Addenda with their Bid Proposal and are encouraged to either register with the website or to view
the Addenda posted on the Contract Administration Solicitation website:
https://solicitations.thorntonco.gov/solicitations prior to submission of a Bid Proposal. Bidders that
do not acknowledge all Addenda may be considered non-responsive. The Bid Documents,
including Addenda, are also available for viewing at the Contract Administration office located on
the 2nd floor of City Hall at 9500 Civic Center Drive, Thornton, Colorado. Bidders that do not have
download and/or printing capability in-house, may contact a commercial blueprint company or other
reprographics company for assistance with downloading and printing the Bid Documents.
An optional Pre-Bid Conference to discuss the Project will be conducted via web broadcast with
Zoom video at 10:00 a.m., May 6, 2026. All prospective Bidders are encouraged to attend.
Prospective Bidders wishing to take part in the Pre-Proposal Conference should e-mail Contract
Administrator at Keith.griess@ThorntonCo.gov to receive a url link to access the Zoom video Pre-
Proposal Conference. If possible, please hold all questions concerning the RFP until that time.
All Prospective Bidders are encouraged to attend.
Each Bid Proposal shall be submitted on form(s) furnished by Thornton and must be accompanied
by a certified check, cashier's check, or bid bond in an amount of not less than five percent (5%)
of the amount of the Bid Proposal and made payable to the City of Thornton.
The successful Bidder will be required to furnish a Performance Bond and a Labor and Material
Payment Bond, each in the amount of one hundred percent (100%) of the total Contract Price, in
conformity with the requirements of the Contract Documents.
The successful Bidder will be determined on the basis of the lowest responsive and responsible
Bid Proposal
Thornton reserves the right to reject any or all Bid Proposals, to waive any informalities or
irregularities in the Bid Proposals received, and to accept the Bid Proposal which in its judgment
best serves the interests of Thornton. The apparent successful Bidder will be required to complete
a Reference Authorization and Release Form.
All questions shall be directed in writing to Keith Griess, Senior Contract Administrator, 9500 Civic
Center Drive, Thornton, Colorado 80229-4326, fax 303- 538-7556 or e-mail -
Keith.griess@cityofthornton.net, 8:00 a.m. to 5:00 p.m., local time, Monday through Friday,
excluding holidays.
Published at: BidNet Direct, COT Website and the Contracts & Purchasing Bulletin Board.
First Publication: April 30 2026, Northglenn-Thornton Sentinel
Second Publication: May 7, 2026 , Northglenn-Thornton Sentinel
Last Publication: May 14, 2026 , Northglenn-Thornton Sentinel
BY: 4/_2_0/_20_2_6__
Dennis Laurita
Contracts Supervisor
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Docusign Envelope ID: 48FBBC3D-6DCB-42FD-9112-B28076846707
INFORMATION FOR BIDDERS
Thornton may consider non-conforming any Bid Proposal not prepared and submitted in
accordance with the provisions hereof and may waive any informalities or reject any and all Bid
Proposals.
Bidder may, without prejudice, withdraw a Bid Proposal after it has been deposited with Thornton,
provided the request for such withdrawal is received by Thornton, in writing, before the deadline
set for submission of Bid Proposals. Telephonic communications withdrawing a Bid Proposal will
not be accepted.
Any Bidder may modify its Bid Proposal in writing any time prior to the scheduled deadline for
submission of Bid Proposals, provided such modification is received by Thornton prior to the Bid
Proposal submission deadline. The modification shall not reveal the Bid Proposal price, but shall
provide only the addition or subtraction or other modification so that the final prices or terms will
not be known by Thornton until the original sealed Bid Proposal is opened.
Any Bid Proposal received after the time and date deadline specified will not be considered.
After opening of Bid Proposals, a Bid Proposal may not be withdrawn by the Bidder for a period
of ninety (90) Calendar Days, or as otherwise required by law. Each Bid Proposal must be
accompanied by either a certified check or a cashier's check made payable to The City of
Thornton, or a Bid Bond duly executed by the Bidder as principal and having as Surety thereon a
Surety company approved by Thornton, in the amount of five percent (5%) of the total Bid Proposal
amount. Such checks or Bid Bonds of the three (3) lowest Bidders may be retained by Thornton
for a period of ninety (90) Calendar Days after the Bid Proposal opening. Other Bidders' Bid
Proposal security will be returned within seven (7) Calendar Days from Thornton's receipt of
request.
Each Bid Proposal must be submitted on the Bid Proposal form(s) provided by Thornton and
must be signed by the Bidder or its duly authorized agent. All blank spaces for Bid Proposal prices
must be filled in, in ink or typewritten, IN BOTH WORDS AND NUMERALS, where called for in
the Bid Proposal.
If there is a discrepancy between the total price in words and the total price in numbers, the total
price in words will govern. If there is a discrepancy between the Unit or Lump Sum Prices
multiplied by the respective quantities and the extended Bid Proposal Prices for individual Pay
Items, the Unit Price or Lump sum Prices multiplied by the respective quantity shall be the
governing number, and the extended price or prices and the resulting Total Price will be adjusted
accordingly.
Conditional Bid Proposals will not be accepted.
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Each Bid Proposal must also include the following CDOT forms, which are included herewith as
Appendix A:
* CDOT Form #606, Anti-Collusion Affidavit
* CDOT Form #1413, Bidders List
* CDOT Form #605, Contractor's Performance Capability Statement
* CDOT Form #621, Assignment of Anti-trust Claims
Where source funding is from the State or other non-federal funds and a local match the following
additional forms will need to be included in the Bid Proposal:
CDOT Form 604, Statement of Residency for Bid Preference
Each Bid Proposal must be submitted in a sealed envelope bearing on the outside the name of
the Bidder, Bidder's address, and the name of the Project and the Project Number for which the
Bid Proposal is submitted. If submitted by mail, package delivery, or courier service, a sealed
envelope containing the Bid Proposal must be enclosed in a mailing envelope addressed to the
Contracts and Special Projects Manager, 9500 Civic Center Drive, 2nd Floor City Hall, Thornton,
Colorado 80229-4326. Please be sure to note on the outside of the mailing envelope "Bid
Proposal Enclosed, "Flashing Yellow Arrow Signal Modifications, Thornton Project No. 23-208,
CDOT Project No. SHO M286-056 / 25527".
Simultaneously with the delivery of the executed Contract, the Contractor shall furnish its IRS W-
9 taxpayer ID form, Anti-Collusion Affidavit if required, the required insurance certificate(s),
required endorsements thereto, ACORD Form 101 if required, and Performance and Labor and
Material Payment Bonds as security for faithful performance of the Contract and for the payment
of all persons performing labor in connection with the Work covered under the Contract and
furnishing materials in connection with the Contract, as specified in the Contract Documents. The
Surety on such Bonds shall be a duly authorized Surety company satisfactory to Thornton.
Attorneys-in-fact who sign Bid Bonds or Performance and Labor and Material Payment Bonds
must file with each bond a certified and effectively dated copy of their Power of Attorney. The
Surety or Sureties must be listed in Federal Circular 570 and must be approved by Thornton. In
no case will Sureties with less than a Best's A rating be approved. Insurers, at a minimum, are
required to be admitted in the State of Colorado and maintain an A.M. Best Financial Strength
Rating of A or higher.
The successful Bidder, upon Bidder's failure or refusal to execute and deliver the required
Contract, Bonds if required, insurance certificate(s), additional insured endorsements, ACORD
Form 101 if required, Anti-Collusion Affidavit if required, and or the W-9 Form within ten (10)
Calendar Days from and including the date of Notice of Award, shall forfeit to Thornton the security
deposited with its Bid Proposal. Notice of Thornton's intent to retain the bid security shall either
be hand delivered by Thornton to the Bidder's address, as given on the Bid Proposal form, or
mailed to such address, first class, United States mail, return receipt requested. Delivery or
mailing of the notice to the address provided shall constitute the required notice without the
requirement of an acknowledgment of receipt from the Bidder.
Each Bidder must inform itself fully of the conditions relating to the construction of the Work and
the employment of labor thereon. Failure to do so will not relieve a successful Bidder of its
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obligation to furnish all Materials and Equipment and labor necessary to carry out the requirements
of the Contract Documents. Insofar as possible, the Bidder, in carrying out its Work, must employ
such methods or means as will not cause any interruption of or interference with the work of any
other contractor.
The Bidder's attention is directed to the fact that all applicable state laws, municipal ordinances,
and the rules and regulations of all authorities having jurisdiction over construction of the Work
shall apply to the Contract throughout and will be deemed to be included in the Contract the same
as though herein written out in full.
No interpretation of the meaning of the Drawings, Specifications, Addenda, other Bid Documents,
Contract Documents, or Pre-Bid Meeting Minutes will be made to any Bidder orally. If a Bidder
who contemplates submitting a Bid Proposal is in doubt about the precise meaning of any part of
the proposed Contract Documents, it may submit to Thornton a written request for an
interpretation. Every request for such interpretation shall be in writing addressed to Keith Griess,
Senior Contract Administrator, at 9500 Civic Center Drive, Thornton, CO 80229-4326, fax 303-
538-7556, or e-mail - Keith.Griess@ThorntonCo.gov, and to be given consideration it must be
received by 5:00 p.m. on the tenth (10th) Calendar Day prior to the date fixed for the submission
of Bid Proposals. The Bidder submitting the request will be responsible for its prompt and actual
delivery. Thornton will not be responsible for any other explanations or interpretations of the
Contract Documents which anyone may make on behalf of Thornton. Any and all such
interpretations and any supplemental instructions will be in the form of written Addenda to the Bid
Documents or to the Contract Documents which, if issued, will be posted on BidNet Direct
System's website at www.BidNetDirect.com and on the Contract Administration bulletin board no
later than three (3) Calendar Days prior to the date fixed for submission of Bid Proposals. Failure
of any Bidder to receive any such Addenda or interpretation shall not relieve such Bidder from any
obligation under its Bid Proposal, as submitted. All Addenda so issued shall become part of the
Contract Documents. It shall be the responsibility of each Bidder to verify that each Addendum
has been received. A bulletin board will be maintained at the Contract Administration Office which
will list the current Projects with Bid Proposal due dates and all Addenda, including the date of
issue for each. It is recommended that all Bidders check this board for the status of the particular
Project they are interested in bidding prior to submitting a Bid Proposal.
At the time of submission of a Bid Proposal, each Bidder shall have completed a thorough site
inspection, including, but not limited to, the location, accessibility and general character of the site
of the Work and all existing buildings and structures within and adjacent to the Project site,
sufficient to satisfy itself as to the nature of the Work, the condition of existing buildings and
structures, the conformation of the ground, the character, quality, and the nature of any
Construction Equipment and any other facilities needed preliminary to and during construction of
the Work, the general and local conditions, the construction hazards, and all other matters,
including the labor situation, which might affect the Work. The Bidder also will have carefully
examined and be thoroughly familiar with the Contract Documents, including all Addenda, and
satisfied itself as to the feasibility and correctness of the Contract Documents for the construction
of the Work and that it accepts all terms, conditions, and stipulations contained in the Contract
Documents, and is prepared to work in peace and harmony with other contractors performing work
at the Project site. Bidders also shall have reviewed the insurance requirements contained in the
Contract Documents. The failure or omission of any Bidder to examine any form, instrument, or
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document shall in no way relieve any Bidder from any obligation in respect to its Bid Proposal.
The Bidder is to confirm the completeness of the Contract Documents on which its Bid Proposal
is based. If the Bidder determines its Contract Documents are incomplete or irregular, it is the
Bidder's responsibility to bring this fact to the attention of the Contract Administrator prior to
submitting a Bid Proposal.
Thornton invites Bid Proposals on the form(s) included as part of this document to be submitted
at such time and place as stated in the Invitation for Bid Proposals. All blanks in the Bid Proposal
forms must be appropriately filled in with typewriter or ink. Bidders are instructed to submit the
entire Bid Proposal form. It is the sole responsibility of the Bidder to see that the Bid
Proposal is received by Thornton before the scheduled deadline set for submission of Bid
Proposals. Any Bid Proposals received after the scheduled deadline for submission of Bid
Proposals will be returned to the Bidder unopened.
The Bid Proposal must be signed in the name of the Bidder and must bear the signature in long
hand of the person or persons duly authorized to sign the Bid Proposal. Changes in or additions
to the Bid Proposal forms, recapitulations of the Work bid upon, alternative Bid Proposals not
requested by Thornton, or any other modifications of the Bid Proposal which are not specifically
called for in the Bid Documents, the Contract Documents, or an Addendum may be rejected by
Thornton as not being responsive to the solicitation.
Bid Proposals shall be made in the name of the principal, and if a co-partnership, the names of all
partners shall be given. Exact postal address shall be given in all cases. If Bid Proposals are
submitted by an agent, satisfactory evidence of agency authority must accompany the Bid
Proposal. Corporate Bidders to be eligible to enter into a Contract with Thornton shall be qualified
to do business in the State of Colorado and Thornton. Bidders shall comply with applicable
licensing requirements. Foreign corporations which have not domesticated or otherwise become
licensed in Thornton shall obtain a permit to do business in Thornton pursuant to Thornton's
requirements prior to submission of a Bid Proposal.
The Bid Proposal submitted must not contain erasures, corrections, or changes from the printed
forms as completed in typewriter or ink, unless such erasures, corrections, or changes are
authenticated by affixing in the margin immediately opposite the erasure, correction, or change,
the initials of the person who signed the Bid Proposal or the initials of such other person as may
be authorized by the Bidder to make erasures, corrections, or changes in the Bid Proposal, and
such authorization must be evidenced by written confirmation, executed by the person authorized
to sign the initial Bid Proposal, attached to the Bid Proposal at the time of submittal.
Bid Proposals may be considered non-conforming and may be rejected for any of the following
reasons, unless otherwise provided by law:
1. If the Bid Proposal form(s) furnished to the Bidder by Thornton is not used or
is altered;
2. If there are unauthorized additions or conditional Bid Proposals, or
irregularities of any kind which may tend to make the Bid Proposal
incomplete, indefinite, or ambiguous as to its meaning;
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