20-Inch Water Transmission Main Extension Design (WM-01) and Old Town South Water Main Replacement

The City of St. Peters, Missouri is requesting proposals from qualified consulting engineering firms to provide design services for a 20-inch water transmission main extension (WM-01) and old town south water main replacement under RFQ No. 26-183, with submissions due August 24, 2026 at 2:00 p.m. local time.

The scope encompasses design of a new 20-inch transmission main extension approximately 7,200 linear feet in length, beginning at the existing 20-inch main on Jungs Station Road at Winwood Trails Drive and extending to the existing 20-inch transmission main near Hartman Circle and South St. Peters Parkway, plus design for removal and replacement of approximately 6,000 linear feet of targeted existing water mains in the Old Town South Subdivision. The existing mains to be replaced consist of cast iron, ductile iron, asbestos cement, and unknown material types ranging from 4-inch to 8-inch diameter. Deliverables include final design plans, easement documents, permits, and final specifications. The selected engineer must provide an Affidavit of Compliance with the Federal Work Authorization Program and a copy of their E-Verify Memorandum of Understanding.

The City has allocated $629,400 to this project. The engineering services agreement will be on a lump-sum basis with a guaranteed maximum limit; compensation will be determined through contract negotiations following selection and invoiced monthly with a 5% retention until satisfactory final completion. The tentative schedule includes interviews the week of September 1, 2026; contract award in October 2026; preliminary submittal in January 2027; 60% design in April 2027; 90% final design in July 2027; and final plans and specifications in August 2027.

Selection will be based on understanding of project scope, project approach and schedule, experience with similar projects, qualifications and experience of the proposed project team, and quality assurance practices. Selected engineers must maintain comprehensive insurance including Workers' Compensation (statutory limits with $500,000 employer liability minimum), Comprehensive General Liability ($1,000,000 each occurrence / $2,000,000 aggregate), Business Automobile Liability ($1,000,000 each occurrence), Umbrella/Excess Liability ($1,000,000), and Professional Errors and Omissions Insurance ($2,000,000 per claim / $2,000,000 annual aggregate). Questions are due by noon local time on August 17, 2026.