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Government contracts for engineering services in Illinois
A snapshot of open federal, state, and local opportunities in Illinois, updated daily. To search them and get daily matches for your business, sign up free.
About engineering services contracts in Illinois
Engineering services contracts in Illinois typically cover roadway and bridge design, construction engineering and inspection, water and wastewater system design, geotechnical investigations, stormwater and drainage studies, traffic engineering, and multi-year on-call engineering services agreements. Federal posts in this category fall under NAICS 541330 (Engineering Services), the largest professional-services classification in government contracting, and the bulk of the work flows to the U.S. Army Corps of Engineers, DoD installations, the GSA, and state Departments of Transportation. Engineering procurements typically follow qualifications-based selection under the Brooks Act and state mini-Brooks statutes, and many on-call pools are set aside for 8(a), SDVOSB, and DBE-certified firms.
Illinois currently has 21 open engineering services contracts in our database, with 14 added in the last 30 days. That's a steady cadence — enough flow to make automated alerting worthwhile rather than manual portal-checking. The most active buyers are DEPT OF THE ARMY (12 open posts) and City of Chicago (2), with the rest spread across other federal civilian agencies, DoD components, and state and local departments active in Illinois.
Beyond federal opportunities, much of the engineering services work in Illinois is posted through the Illinois Procurement Bulletin (BidBuy), with recurring buyers including the Illinois Department of Transportation, the University of Illinois system, and the Illinois Tollway. Illinois requires BEP (Business Enterprise Program) certification for minority-, women-, and veteran-owned firms to access targeted set-aside spend. ContractRadar pulls federal postings from SAM.gov alongside state and local feeds so an engineering firm doesn't have to monitor each portal manually.
Top matching contracts in Illinois
Design Engineering Services - Pulaski Road (149th St. to 159th St.) - Section No. 26-W4310-00-PV - BP# BP2025-11
Design Engineering Services - Pulaski Road (149th St. to 159th St.) - Section No. 26-W4310-00-PV - BP# BP2025-11 Reference: 2661-06050 Department: 1500.COUNTY HIGHWAY DEPARTMENT
PROFESSIONAL ENGINEERING CONSULTING SERVICES MISCELLANEOUS HYDROLOGIC AND HYDRA
PROFESSIONAL ENGINEERING CONSULTING SERVICES MISCELLANEOUS HYDROLOGIC AND HYDRA (Request for Qualification) — MBE% 26 WBE 5%
FLOSSMOOR ROAD VIADUCT STORM SEWER IMPROVEMENTS, FLOSSMOOR, COOK COUNTY, ILLINOIS
This Pre-Solicitation Notice is being issued by the United States Army Corps of Engineers- Chicago District to inform interested vendors of the district?s intent to issue a solicitation for Flossmoor …
Emergency Water Infrastructure Repairs (IFB)
Emergency Water Infrastructure Repairs (IFB) Reference: 2628-01300 Department: 1031.OFFICE OF ASSET MANAGEMENT
VILLAGE OF EAST HAZEL CREST STORMWATER IMPROVEMENTS, EAST HAZEL CREST, COOK COUNTY, ILLINOIS (USACE ACQUISITION)
This Pre-Solicitation Notice is being issued by the United States Army Corps of Engineers- Chicago District to inform interested vendors of the district?s intent to issue a solicitation for Village of…
VILLAGE OF EAST HAZEL CREST STORMWATER IMPROVEMENTS, EAST HAZEL CREST, COOK COUNTY, ILLINOIS (USACE ACQUISITION)
This Pre-Solicitation Notice is being issued by the United States Army Corps of Engineers- Chicago District to inform interested vendors of the district?s intent to issue a solicitation for Village of…
Ground Maintenance Services - FEMA Region 5
See attachments for details 1. RFQ 70FBR526Q00000003 2. Statement of Work 3. CLIN Pricing Sheet This solicitation replaces 70FBR526Q00000002 that was canceled. Questions are due 7/2/26 by 12:00 pm ET …
CONSTRUCT TOC PAD - ARLINGTON HEIGHTS IL - Pre-Solicitation
The US Army Corps of Engineers - Rock Island District intends to solicit for competitive bids under RFO part 14 for the following requirement. The work includes, but is not limited to, excavation and …
Cahokia Heights Sanitary Sewer Trunkline Upper Limits Project
The U.S. Army Corps of Engineers (USACE), St. Louis District, is seeking businesses that are interested in and capable of performing trenchless sewer rehabilitation of main sanitary sewer trunkline co…
Cahokia Heights Sanitary Sewer Trunkline Upper Limits Project
The U.S. Army Corps of Engineers (USACE), St. Louis District, is seeking businesses that are interested in and capable of performing trenchless sewer rehabilitation of main sanitary sewer trunkline co…