Sealed proposals due November 19, 2026, 4:00 PM CST for design, manufacture, supply, and installation of an air-supported dome structure (240 ft wide, 480 ft long, 80 ft high) in Quincy, IL. Submit via BidNet Direct or mail to Purchasing Department. Questions due November 12, 2026 via BidNet Direct. Manufacturer must have 10+ years experience, 15 similar structures in last 5 years, and provide 20-year prorated membrane warranty, 3-year workmanship warranty, 1-year mechanical/electrical warranty. Samples required. Prevailing wages apply. Proposals opened privately.
Proposals are due on Thursday, November 19, 2026, by 4:00 PM CST. proposals are due on thursday, november 19, 2026, by 4: 00 pm cst.
Manufacturer must provide a minimum 20-year prorated warranty on the structural membrane, 3-year warranty on workmanship, and 1-year warranty on mechanical and electrical equipment. minimum twenty 20 year prorated warranty on the structural membrane.
The city will base selection on unit prices and the clear ability of the proponent to successfully perform, with evaluation of responsiveness, qualifications, price, customer service, and system design. unit prices and the clear ability of the proponent to successfully perform under the terms of the contract.
Manufacturers must have a minimum of 10 consecutive years of experience in air-supported structures and have completed at least 15 similarly sized structures within the last 5 years. minimum of ten 10 consecutive years of experience in the design, engineering, fabrication, and installation of airsupported structures.
Samples required: 8x12 sample of coated outer and inner liner fabric and a 12-inch long sample of extruded aluminum anchor channel. submit 8 x 12 sample of coated outer and inner liner fabric with manufacturers warranty.
Bid protests regarding the solicitation must be submitted in writing 7 days prior to proposal opening; protests regarding opening or contents within 3 days of opening. any bid protest regarding the solicitation must be submitted in writing to the director of purchasing, 7 days prior to proposal opening.
Proposals may be deemed nonresponsive for omissions, erasures, alterations, or failure to conform to conditions. the city may deem any proposal nonresponsive that contains omissions, erasures, alterations or additions of any kind.