What does Construction do?

The Construction Agency under the Illinois Toll Highway Authority is dedicated to the design, construction, and maintenance of the state’s tollway infrastructure, with a core mission to ensure the safety, efficiency, and resilience of Illinois’ highway, bridge, and related civil engineering systems. Strategic priorities center on modernizing aging transportation corridors, enhancing traffic flow through structural upgrades, and integrating durable, long-term solutions for rail-to-highway interchanges and earthwork stabilization. Key programs focus on corridor reconstruction, railroad bridge replacements, and retaining wall installations to support high-volume commuter routes, particularly along I-294 and I-490. The agency prioritizes infrastructure that withstands heavy usage and minimizes future lifecycle costs through robust construction standards. Procurement patterns reveal a consistent reliance on full-service highway and bridge construction contracts, often issued as competitive solicitations under fixed-price or cost-reimbursement structures. Engineering services are engaged selectively to support design validation and technical oversight, while ancillary work such as electrical and landscaping is procured only when directly tied to major construction phases. Contracts are typically awarded through sealed bidding processes with no set-asides, indicating a preference for experienced, large-scale contractors capable of delivering complex civil works on tight schedules. The agency’s primary procurement focus is on NAICS 237310 (Highway, Street, and Bridge Construction), reflecting its central role in heavy civil infrastructure. Supporting activities include related earthwork, structural foundations, and railroad interface projects, all aligned with transportation network expansion and modernization. Vendor relationships are built on proven technical capability, compliance with state transportation specifications, and demonstrated experience in multi-phase, high-traffic construction environments. As a division of the Illinois Toll Highway Authority, this agency operates statewide to manage the planning and execution of tollway infrastructure projects. It utilizes standardized procurement vehicles for public works, including construction solicitations and engineering service agreements, and maintains a centralized contracting office to oversee all phases of project delivery from bid to closeout.

How do I find contracts from Construction?

You can find contracts from Construction on CLEATUS by visiting the agency's contracts tab. Search and filter by contract type, NAICS code, set-aside, and more. CLEATUS aggregates data from SAM.gov, FPDS, USASpending.gov, and state procurement systems.

What contracts does Construction award?

Construction awards government contracts across various categories. Browse contract opportunities from this agency.

How do I do business with Construction?

To do business with Construction, start by registering in SAM.gov and obtaining a UEI number. Then search for contract opportunities from this agency on CLEATUS. Review the agency's procurement history, identify relevant NAICS codes, and prepare competitive proposals. The contractors tab shows companies that have won contracts from this agency.

Who are the top contractors for Construction?

View the full list of contractors who have won awards from Construction in the contractors tab . You can filter by contract value, NAICS code, and set-aside type to find relevant competitors and potential teaming partners.

Where is Construction located?

Construction is located in IL. While the agency may have offices in multiple locations, contract opportunities can be performed at various places of performance across the country.

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State & Local Agency

Construction

Part of Illinois · Illinois

The Construction Agency under the Illinois Toll Highway Authority is dedicated to the design, construction, and maintenance of the state’s tollway infrastructure, with a core mission to ensure the safety, efficiency, and resilience of Illinois’ highway, bridge, and related civil engineering systems. Strategic priorities center on modernizing aging transportation corridors, enhancing traffic flow through structural upgrades, and integrating durable, long-term solutions for rail-to-highway interchanges and earthwork stabilization.

Construction

Part of Illinois · Illinois

Recent Construction Contracts

26-557THA-ENGCO-B-51603 | Change Order Notice I-18-4700 Design Corridor Manager Services DCM -EOWA Corridor IL RTE 390/I-490

26-557THA-ENGCO-B-51552 | Renewal Notice: RR-20-4549 Fiber Optic Construction Upon Request - Systemwide

26-557THA-ENGCO-B-51558 | Change Order Notice I-18-4701 Const. Corridor Manager-Owner Representative Services IL 390-I 490

Storm Drain and Culvert Installation

Base and Subbase Material Supply

Concrete Barrier and Curb Installation

Utility Relocation and Adjustment

26-557THA-ENGCO-B-51201 | Change Order Notice I-21-4809, Tri-State Tollway Roadway Reconstruction & Widening

Earthwork and Grading

Asphalt Paving

Search all Construction contracts

Search all Construction contractors

Frequently Asked Questions

What does Construction do?

What contracts does Construction award?

How do I do business with Construction?

Who are the top contractors for Construction?

Where is Construction located?

Recently Posted by Construction

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Recent Construction Contracts

26-557THA-ENGCO-B-51603 | Change Order Notice I-18-4700 Design Corridor Manager Services DCM -EOWA Corridor IL RTE 390/I-490

26-557THA-ENGCO-B-51552 | Renewal Notice: RR-20-4549 Fiber Optic Construction Upon Request - Systemwide

26-557THA-ENGCO-B-51558 | Change Order Notice I-18-4701 Const. Corridor Manager-Owner Representative Services IL 390-I 490

Storm Drain and Culvert Installation

Base and Subbase Material Supply

Concrete Barrier and Curb Installation

Utility Relocation and Adjustment

26-557THA-ENGCO-B-51201 | Change Order Notice I-21-4809, Tri-State Tollway Roadway Reconstruction & Widening

Earthwork and Grading

Asphalt Paving

Search all Construction contracts

Search all Construction contractors

Frequently Asked Questions

What does Construction do?

What contracts does Construction award?

How do I do business with Construction?

Who are the top contractors for Construction?

Where is Construction located?