1372175-event.pdf
PDF 404 KB Posted
- Solicitation number
- 645-RFB-2526-2026
- Issued by
- Lyon County, Iowa
About this file
This is a Request for Bids (RFB) document issued by the Iowa Department of Transportation (Iowa DOT) for the replacement of the EPDM roof at the Knoxville Maintenance Garage located at 300 Weiler Drive, Knoxville, Iowa 50138. The scope of work includes removal and salvaging of existing ballast, removal of existing EPDM roofing and coverboard, removal and replacement of wet polyisocyanurate insulation board on a unit price basis, replacement of metal flashings and downspouts, installation of new 1.5-inch polyiso insulation board with 1/4-inch DensDeck, and installation of a new 60-mil EPDM membrane with reinstallation of salvaged ballast. Bidders must provide all equipment, materials, and labor necessary to complete the project according to the attached project manual and plans. The bid opening is scheduled for March 23, 2026, at 1:00 PM CST with bids due by March 24, 2026, at 1:00 PM CDT. Pre-bid site visits are highly recommended and available on March 4, 2026, from 1:00-3:00 PM CT and March 5, 2026, from 8:00-10:00 AM CT. The estimated project start date is July 1, 2026, with an estimated completion date of August 31, 2026. A Notification of Intent to Award will be posted publicly following bid evaluation.
Payment terms are Net 60 days with monthly state warrant payments at 97 percent of the value of work performed, including acceptable materials stored on-site. The Iowa DOT is a tax-exempt agency and will provide tax exemption certificates upon request; Davis-Bacon wage requirements do not apply. Contractors must be registered with the Iowa Division of Labor according to Iowa Code Chapter 91C before entering into a contract. Performance and payment bonds covering 100 percent of the contract are required if the contracted amount is $25,000 or more, with the Iowa DOT providing Bond Form 131070 upon award. All lines in the RFB are tied, requiring vendors to bid on all line items with award going to a single vendor. Award will be made to the responsible bidder whose submission is most advantageous to the Iowa DOT, considering cost and other factors including mandatory requirements, proposed staffing, required time schedule compliance, past work performance, and work capacity. The contract is subject to Iowa Administrative Code 761--20 procedures and requirements. Shipping terms specify F.O.B. Destination, and all work shall be under direct supervision of the Iowa DOT with periodic site inspections; contractors must provide 24 hours' advance notice before installation.
View the file
Other files
| File | Type | Posted |
|---|---|---|
| PLANS KNOXVILLE ROOF.pdf | ||
| PROJECT MANUAL KNOXVILLE ROOF.pdf | ||
| A101_2017 sample.pdf | ||
| Pre-Bid Request for Approval of Products or Materials.pdf |
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Text version
24 February 2026
Knoxville Maintenance Garage EPDM Roof Replacement Knoxville Maintenance Garage EPDM Roof Replacement
24 February 2026
Open 2/24/2026 1:00 PM CST Type RFB - Request for Bids Close 3/24/2026 1:00 PM CDT Number 645-RFB-2526-2026 Currency US Dollar
Sealed Until 3/24/2026 1:00 PM CDT
Payment Terms 0% 0, Net 60
24 February 2026
Contacts Teri Schulz teri.schulz@iowadot.us
Phone +1 515-239-1431
24 February 2026
Commodity Codes Commodity Code Description 90638 General Construction, Architectural Services 77009 Asphalt, Roofing
90900 BUILDING CONSTRUCTION SERVICES, NEW, INCLUDING MAINTENANCE AND
REPAIR SERVICES
90924 Building Construction, Commercial and Institutional 91066 Roofing, Gutters, and Downspouts Maintenance and Repair Services 91473 Roofing and Siding 92581 Roofing Engineering
24 February 202624 February 202624 February 202624 February 202624 February 202624 February 202624 February 202624 February 202624 February 2026 mailto:teri.schulz@iowadot.us
Overview
The Iowa DOT is seeking competitive bids for the Roof Replacement at the Knoxville Maintenance Garage to include removing and salvaging existing ballast for reuse, removing existing EPDM roofing and coverboard; removing and replacing wet polyisocyanurate insulation board (per unit price);
removing and replacing metal flashings, scuppers, collector heads and downspouts and membrane flashings. Install new 3" polyiso insulation board with 1/4" DensDeck over and New 60 mil EPDM membrane; Reinstall salvaged ballast.Rep. Contractors must provide all equipment, materials and labor necessary to complete the project as per attached Project Manual and Plans. (see Buyer Attachments section of this RFB).
Site location: 300 Weiler Dr., Knoxville, IA 50138
The Iowa DOT bidding process is subject to the procedures and requirements established in Iowa Administrative Code 761--20.
ALL LINES ARE TIED ON THE ITEMS SECTION OF THIS RFB. VENDORS MUST BID ON ALL
LINES AND DOT WILL AWARD ALL LINES TO ONE VENDOR.
Shipping Terms
Deliveries shall be F.O.B Destination.
Award - Cost and Other Factors
It is the intent of the Iowa DOT to award the contract to the responsible bidder whose submission is the most advantageous to the Iowa DOT, cost and other factors considered. Other factors include, but are not limited to: meeting or exceeding mandatory requirements, proposed staffing, and meeting required time schedule. Other factors may also include a comprehensive review of bidders past work performance, and work capacity..
Notification of Intent to Award
After responses are evaluated, a Notification of Intent to Award (NOIA) and bid tabulation will be posted publicly on the IMPACS Business Opportunities site.
Communication
Until a contract is awarded, the sole point of contact for this bid opportunity will be the Purchasing Agent listed in the event. All questions must be directed solely to the Purchasing Agent and will not be accepted after the Q&A Submissions Close Date. Bidders are strongly encouraged to submit all questions through the Q&A Board. Responses to questions will be posted on the Q&A Board.
Contract Term
DOT estimated start date: July 1, 2026 (Work must not start before July 1, 2026. Start date to be coordinated with the DOT Project Manager).
DOT estimated completion date: August 31, 2026
DOT Responsibility-Inspection and Supervision
• All work shall be according to the approved design and shall be under the direct supervision of the Iowa DOT.
Description https://bids.sciquest.com/apps/Router/PublicEvent?tab=PHX_NAV_SourcingClosed&CustomerOrg=DASIowa&SourcingPublicSite_FILTER_BY_BUSINESS_UNIT=undefined&SourcingPublicSite_FILTER_BY_BUSINESS_UNIT_buDisplayName=&SimpleSearch_Keyword=&tmstmp=1741986176410
• Periodic site inspections will be carried on by the Iowa DOT with the Contractor to ensure coordination of the project.
• The Iowa DOT will provide a list of items requiring inspection prior to or during installation. The Contractor is to give the Iowa DOT notice no less than 24 hours in advance of installation.
• The Iowa DOT point of contact after the contract award shall be determined.
Payment and Completion of Contract
Payments on contract will be made monthly by means of state warrants to the extent of Ninety-Seven Percent (97%) of the value of work performed, including acceptable material stored at the building site, as determined by the Contractor as governed by the Iowa DOT.
Site Visits
A pre-bid site visit is Highly Recommended. Any questions that arise during the site visit must be submitted through the Q&A Board on the solicitation, or, if needed emailed to the Purchasing Agent, Teri Schulz, at teri.schulz@iowadot.us
The following pre-bid site visit dates and times are available for contractors to visit the site; 300 Weiler Dr., Knoxville, IA 50138
March 4, 2026 1:00-3:00 pm CT
March 5, 2026 CT 8:00-10:00 am CT
Tax Exemption
The Iowa Department of Transportation is a tax-exempt agency. Tax exemption certificates will be provided upon request.
Davis-Bacon wages do not apply.
Bid Opening
Date: March 23, 2026
Time: 1:00 pm CT
Interested responders are welcome to attend the bid opening via the Teams meeting link or by phone with the conference id number (listed below) followed by the # sign.
JOIN TEAM MEETING
Meeting ID: 258 241 105 576 64
Passcode: RC3D5zi9
Dial in by phone https://dialin.teams.microsoft.com/7798de11-5a2e-46f6-99dc-0caa213c9a6b?id=533733576
+1 515-817-6093,,910994489# United States, Ames
Find a local number
Phone conference ID: 910 994 489#
Those who join the public bid opening after 1:00 pm may not hear all the responses read aloud but all responses will be posted publicly for viewing as soon as they become available.
https://dialin.teams.microsoft.com/7798de11-5a2e-46f6-99dc-0caa213c9a6b?id=910994489
Required to View Event
Prerequisites Required to Enter Bid
24 February 2026
1. Bidder shall certify that they have read, understand, and accept.
2. Bidder shall certify that they have read, understand, and accept.
3. Bidder shall certify that they have read, understand, and accept.
4. Bidder shall certify that they have read, understand, and accept.
5. Bidder shall certify that they have read, understand, and accept.
6. Bidder shall certify that they have read, understand, and accept.
7. Bidder shall certify that they have read, understand, and accept.
8. Bidder shall certify that they have read, understand, and accept.
9. Bidder shall certify that they have read, understand, and accept.
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Buyer Attachments
1. A101_2017 sample.pdf
2. PROJECT MANUAL KNOXVILLE ROOF.pdf
3. PLANS KNOXVILLE ROOF.pdf
4. Pre-Bid Request for Approval of Products or Materials.pdf
24 February 202624 February 202624 February 202624 February 202624 February 202624 February 2026 https://bids01.jaggaer.com/apps/Router/PublicEventDownload?file=U291cmNpbmdldmVudC8xMzcyMTc1LTE4NzUxOTE0MzBBMTAxXzIwMTcgc2FtcGxlLnBkZg%3D%3D&auth=MDpBRVMyI0NQNVp4a2IvSnkxZDNIUm81TGpka2h4M0V4bkpBZDlVSkVFUnk5WnZrK2l5eGZjOVRGNkRHUlU9 https://bids01.jaggaer.com/apps/Router/PublicEventDownload?file=U291cmNpbmdldmVudC8xMzcyMTc1LTE5NzQxNTY0MDRQUk9KRUNUIE1BTlVBTCBLTk9YVklMTEUgUk9PRi5wZGY%3D&auth=MDpBRVMyI0NQNVp4a2IvSnkxZDNIUm81TGpka2h4M0V4bkpBZDlVSkVFUnk5WnZrK2l5eGZjOVRGNkRHUlU9 https://bids01.jaggaer.com/apps/Router/PublicEventDownload?file=U291cmNpbmdldmVudC8xMzcyMTc1LTE5NzQxNTU0ODVQTEFOUyBLTk9YVklMTEUgUk9PRi5wZGY%3D&auth=MDpBRVMyI0NQNVp4a2IvSnkxZDNIUm81TGpka2h4M0V4bkpBZDlVSkVFUnk5WnZrK2l5eGZjOVRGNkRHUlU9 https://bids01.jaggaer.com/apps/Router/PublicEventDownload?file=U291cmNpbmdldmVudC8xMzcyMTc1LTE5NzQ4OTg5MzFQcmUtQmlkIFJlcXVlc3QgZm9yIEFwcHJvdmFsIG9mIFByb2R1Y3RzIG9yIE1hdGVyaWFscy5wZGY%3D&auth=MDpBRVMyI0NQNVp4a2IvSnkxZDNIUm81TGpka2h4M0V4bkpBZDlVSkVFUnk5WnZrK2l5eGZjOVRGNkRHUlU9
Questions Required Questions
Group 1: Construction Instructions:
1.1
Labor Relations:
All Bidders, before entering into a contract with the Department, must be registered with the Division of Labor in the Iowa Department of Workforce Development (515-281-3606) according to chapter 91C, Code of Iowa 2015. This pertains to contractor’s who engage in the business of construction. Please provide your contractor number.
1.2 Is there a lead time on Fabricated or Custom-Built Materials? All Bidders must provide a lead time on any fabricated or custom-built product or products that will impact the project timeline. "No" indicates that all materials needed for the project are readily available with no known delays.
1.3 Project Period:
Please provide the estimated number of days needed to complete the project in this proposal once you have materials readily available.
1.4 Fabricated or Custom-Built Materials Lead Time: Lead times are to be listed for each fabricated product, including estimated product delivery date.
1.5 Bidder's Proposed Project Dates: If bidder wishes to propose alternate project start and end dates, please provide in response field. DOT will evaluate and consider the proposed dates.
1.6 Contract Signing Authority: In the event your company receives the award for this bid opportunity, please provide the following contact information for the person authorized to sign on your company's behalf: Name, Phone Number, Mailing address and Email address.
1.7
Performance and Payment Bond:
If the contracted amount is $25,000 or more, the successful Bidder must furnish a performance and payment bond covering the faithful performance of 100% of the Contract and the payment of all obligations arising thereunder.
Iowa DOT will provide the Performance and Payment Bond Form 131070 upon contract award.
A Resident Commission Agent or attorney-in-fact must file a copy of the power of attorney.
1.8 Power of Attorney:
Attorney-in-fact who signs the Proposal Guaranty and/or Performance Bond must file with each bond a certified and effectively dated copy of the Power of Attorney.
1.9
Insurance Required:
The resulting Contract will require the successful Contractor to maintain insurance coverage(s) of the type and in the amounts set forth in the Standard Terms and Conditions or as otherwise specified.
1.10 Are you imposing Tariffs in your bid?
1.11 If Contractor is imposing tariffs in their bid, indicate type of tariff and fee below. Put NA if this does not apply.
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Product Line Items Product Line Items
There are no Items added to this event.
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Service Line Items Service Line Items
1. Base Bid # Item Name, Commodity Code, Description Allow
Alternates Qty. UOM Requested Service Delivery
S1 EPDM Roof Replacement at Knoxville MG 1 JA - Job
Contractor to provide all equipment, materials and labor necessary to replace roof at the Knoxville Maintenance Garage.
as per attached Plans and Project Manual. Work to include removing and salvaging existing ballast for reuse, removing existing EPDM roofing and coverboard; removing and replacing wet polyisocyanurate insulation board (per unit price); removing and replacing metal flashings, scuppers, collector heads and downspouts and membrane flashings. Install new 1.5" polyiso insulation board with 1/4" DensDeck over and New 60 mil EPDM membrane; Reinstall salvaged ballast.
2. Unit Price # Item Name, Commodity Code, Description Allow
Alternates Qty. UOM Requested Service Delivery
S1 Insulation Replacement Unit Price 1 SF - Square Feet
Removal and replacement of soft and/or wet existing polyisocyanurate insulation board found during construction.
Assume two layers of 2 inch polyiso (4 inches total).
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File details come from the government source that posted it. Updated .