RFPs, RFIs, RFQs, Sources Sought and Government Contracting Opportunities in St. Louis County, Missouri

Browse open government contracting RFPs, RFIs, RFQs, and Sources Sought in St. Louis County, Missouri on Bidscope. We aggregate active government contracting opportunities from federal, state, and local agencies across St. Louis County, Missouri, refreshed daily so you never miss a bid. Click any opportunity below for full solicitation details, due dates, and contacts.

StatusTitleBuyerDue Date
OpenWestern Transmission Main Phase 3C Construction

Public Water Supply District No. 2 of St. Charles County is seeking sealed bids for construction of a 30-inch water transmission main, including ductile iron pipe, jack-and-bore steel casing, system connections, testing, disinfection, and restoration.

St. Charles County, MO, USA•Invitation for/to Bid (IFB/ITB)
Public Water Supply District No. 2 of St. Charles County10/15/2026
OpenCorrosion Repairs and Metal Stair Construction

St. Louis County is soliciting bids for corrosion treatment, painting, structural steel strengthening, weld inspection, and construction of a new engineered metal stair at Transportation Districts 2 and 3, with an estimated project magnitude of $250,000 to $500,000.

St. Louis County, MO, USA•Invitation for/to Bid (IFB/ITB)
St. Louis County11/17/2026
OpenForest Park Campus Phase 3 Building Renovations

St. Louis County is seeking bids for Phase 3 renovations to multiple buildings at the Forest Park Campus, including the Enrollment Center, West Building, Library Building, East Wing Building, and Highland Park Building.

St. Louis County, MO, USA•Invitation for/to Bid (IFB/ITB)
St. Louis County11/10/2026
OpenResident Legal Communication Services

Saint Louis County Government is soliciting bids for resident legal communication services for the Department of Justice Services.

St. Louis County, MO, USA•Invitation for/to Bid (IFB/ITB)
Rio Blanco County > Department of Human Services10/22/2026
OpenHigh School Stadium Turf Replacement and Holt Track Expansion

Wentzville R-IV School District is seeking bids to replace synthetic turf at three high school stadiums and expand and resurface Holt High School's track to eight lanes, including associated civil, drainage, testing, warranty, and closeout work.

St. Charles County, MO, USA•Invitation for/to Bid (IFB/ITB)
Wentzville RIV School District10/22/2026
OpenNFL Fund Subdivision Traffic Calming, Package 1

St. Louis County is seeking bids to install speed humps and related incidental improvements on streets in various subdivisions under the NFL Fund Subdivision Traffic Calming, Package 1 project.

St. Louis County, MO, USA•Invitation for/to Bid (IFB/ITB)
St. Louis County10/21/2026
OpenDistrictwide Mowing and Grounds Maintenance Services

Wentzville R-IV School District is seeking proposals for districtwide mowing and grounds maintenance, including brush-hog services at six sites, with pricing for initial and renewal terms.

St. Charles County, MO, USA•Request for Proposal (RFP)
Wentzville RIV School District10/19/2026
OpenNew Halls Ferry Road Sidewalk Construction

St. Louis County is seeking bids for clearing, pavement removal, excavation, concrete sidewalk and curb-ramp construction, sodding, and related improvements on New Halls Ferry Road.

St. Louis County, MO, USA•Invitation for/to Bid (IFB/ITB)Disadvantaged Business
St. Louis County > Department of Transportation10/21/2026
OpenNFL Fund Subdivision Traffic Calming, Package 1

St. Louis County is seeking bids to install 65 asphalt speed humps and perform related roadway, traffic-control, erosion-control, signage, and pavement-marking work on streets in various subdivisions.

St. Louis County, MO, USA•Invitation for/to Bid (IFB/ITB)
St. Louis County > Department of Transportation10/21/2026
OpenHanley Road and Laclede Station Road Resurfacing

St. Louis County is seeking a contractor to resurface Hanley Road and Laclede Station Road, replace pavement, curbs, sidewalks, and curb ramps, and improve traffic signals with accessible pedestrian signals.

St. Louis County, MO, USA•Invitation for/to Bid (IFB/ITB)Disadvantaged Business
St. Louis County > Department of Transportation and Public Works11/4/2026
OpenMultifunction Copier Replacements

St. Charles County is soliciting bids for replacement multifunction copiers, with sealed bids due before the October 20, 2026, opening.

St. Charles County, MO, USA•Invitation for/to Bid (IFB/ITB)
St. Charles County10/20/2026
OpenDistrictwide Edwards EST3-to-EST4 Fire Alarm Migration and Dual-Path Monitoring

Wentzville R-IV School District is seeking a contractor to migrate 25 Edwards EST3 fire alarm systems to EST4 and install tested, supervised dual-path IP/VoIP and cellular reporting across its buildings.

St. Charles County, MO, USA•Request for Proposal (RFP)
Wentzville RIV School District10/19/2026
OpenSpoede Road Bridge Replacement

The City of Frontenac is seeking bids to replace the Spoede Road Bridge over Deer Creek, including demolition, excavation, bridge construction, asphalt pavement, pedestrian fencing, sidewalks, and related roadway improvements.

Frontenac, MO, USA•Invitation for/to Bid (IFB/ITB)Disadvantaged Business
City of Frontenac11/2/2026
OpenMonarch Chesterfield Levee Trail Signage Replacement

Great Rivers Greenway is seeking a contractor to demolish and replace wayfinding and interpretive signage along the Monarch Chesterfield Levee Trail and install painted environmental graphics on floodwalls in the Chesterfield, Missouri area.

St. Louis County, MO, USA•Invitation for/to Bid (IFB/ITB)
State of Missouri > Great Rivers Greenway11/6/2026
OpenResidential Waste Collection Services

St. Louis County is soliciting bids for residential waste, yard waste, recycling, bulky waste, and optional collection services across eight Waste Management Districts in unincorporated St. Louis County, with eight expected contracts and a five-year agreement duration.

St. Louis County, MO, USA•Invitation for/to Bid (IFB/ITB)
St. Louis County10/22/2026
OpenEast Concord Road Storm Sewer Construction

The Metropolitan St. Louis Sewer District is seeking a contractor to construct approximately 204 linear feet of 15-inch-diameter pipe sewers and appurtenances in unincorporated St. Louis County, Missouri, with an estimated project cost of $100,000.

St. Louis County, MO, USA•Invitation for/to Bid (IFB/ITB)
Metropolitan St. Louis Sewer District11/5/2026
OpenDistrict-Wide LED Lighting Conversion and Controls

Parkway School District is seeking a prime contractor to convert district-wide lighting to LED lamps and install hard-wired occupancy sensors and lighting controls at five facilities in Missouri.

St. Louis County, MO, USA•Request for Proposal (RFP)
Parkway School District10/20/2026
OpenHousing Authority Solicitation CH-RFP-26-P-04

The Housing Authority of St. Louis County is soliciting proposals under CH-RFP-26-P-04, but the provided materials do not describe the requested products or services.

St. Louis County, MO, USA•Request for Proposal (RFP)
St. Louis County > Housing Authority of St. Louis County-
OpenHanley Road–Laclede Station Road Resurfacing and Improvements

St. Louis County is seeking bids for resurfacing Hanley Road–Laclede Station Road, upgrading curb ramps, and improving traffic signals between Manchester Road and Newport Avenue.

St. Louis County, MO, USA•Invitation for/to Bid (IFB/ITB)Disadvantaged Business
St. Louis County > Purchasing Division11/4/2026
OpenDistrictwide Integrated Pest Management and Pest Control Services

Wentzville R-IV School District is seeking year-round, districtwide integrated pest management and pest control services for its occupied educational and support facilities in St. Charles County, Missouri.

St. Charles County, MO, USA•Request for Proposal (RFP)
Wentzville RIV School District10/19/2026
OpenSpoede Road Bridge Replacement

The City of Frontenac is seeking bids to remove and replace the Spoede Road Bridge over Deer Creek, including roadway, pedestrian, drainage, and related site work.

Frontenac, MO, USA•Invitation for/to Bid (IFB/ITB)Disadvantaged Business
City of Frontenac11/2/2026
OpenAirport Road Traffic Calming Improvements

St. Louis County is seeking a contractor to refresh pavement striping and install low-profile bike and flexible plastic delineators on Airport Road between North Hanley Road and New Florissant Road.

St. Louis County, MO, USA•Invitation for/to Bid (IFB/ITB)
St. Louis County11/18/2026
Open2026 Public Park Farm Leases

St. Charles County is seeking bids to lease farmland at Broemmelsiek Park, Hackmann Park, and Lindenwood Park for crop and hay production beginning January 1, 2027.

St. Charles County, MO, USA•Invitation for/to Bid (IFB/ITB)
St. Charles County > Parks and Recreation Department10/23/2026
OpenGrandview Drive Storm Sewer Construction

The Metropolitan St. Louis Sewer District is seeking bids for storm sewer construction, including approximately 101 linear feet of 15-inch pipe sewer, revegetation blanket, rock lining, rock blanket, and related appurtenances in Kirkwood, Missouri.

Kirkwood, MO, USA•Invitation for/to Bid (IFB/ITB)
Metropolitan St. Louis Sewer District11/10/2026
OpenKirkwood Parks and Performing Arts Center Mowing Services

The City of Kirkwood is requesting sealed electronic proposals for mowing services at Kirkwood parks and the Performing Arts Center.

Kirkwood, MO, USA•Invitation for/to Bid (IFB/ITB)
City of Kirkwood10/15/2026
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