# Illinois BidBuy #27-557THA-ENGCO-B-54242

Plaza Improvements Construction Services for Tri-State Tollway (I-94) in Lake County, IL

**Posted:** September 25, 2026
**Respond By:** November 13, 2026
**Identifier:** 27-557THA-ENGCO-B-54242
**NAICS:** 237310

This opportunity from the Illinois State Toll Highway Authority (ISTHA) seeks bids for major plaza improvements on the Tri-State Tollway (I-94) in Lake County, Illinois.
- Government Buyer:
  - Illinois State Toll Highway Authority (ISTHA), Engineering - Construction Department
- Project Scope:
  - Plaza improvements at Waukegan Plaza (Plaza 21) and Buckley Road Plaza (Plaza 20) between Mile Post 4.7 and 13.8
  - Ramp pavement and shoulder replacement
  - Demolition and removal of toll plaza median islands, equipment, and canopies
  - Structure demolition and construction of barrier wall extensions
  - Installation of toll plaza monotubes, lighting, pavement marking, and signing
  - Toll plaza electrical work
  - Landscaping, erosion control, and maintenance of traffic
- Products/Services Requested:
  - Comprehensive construction services for plaza improvements (no specific part numbers or OEMs listed)
- Unique/Notable Requirements:
  - Bidders must be pre-qualified by the Illinois Department of Transportation (IDOT)
  - Compliance with Business Enterprise Program (BEP) goal of 21% and Veteran Business Program (VBP) goal of 2%
  - Submission of detailed utilization plans and adherence to prevailing wage laws
  - Electronic bid submission via BidBuy
- No specific OEMs or vendors are named in the solicitation.

### Description

This solicitation is for the I-26-2059 contract involving plaza improvements on the Tri-State Tollway (I-94) between Mile Post 4.7 to Mile Post 13.8 in Lake County, Illinois. The work includes ramp pavement and shoulder replacement, removal of existing toll plaza median islands, equipment, and canopies, structure demolition, construction of barrier wall extensions, installation of toll plaza monotubes, lighting, pavement marking and signing, toll plaza electrical work, landscaping, erosion control, and maintenance of traffic. The project start date is on or about February 16, 2027, with completion by November 11, 2028. An optional pre-bid meeting and site visit are scheduled for October 7 and 8, 2026, respectively.

[View original listing](https://www.bidbuy.illinois.gov/bso/external/bidDetail.sda?docId=27-557THA-ENGCO-B-54242&external=true&parentUrl=close)