RR-26-2041 Item 3 PSB 26-1 Professional Services Bulletin

The Illinois State Toll Highway Authority (ISTHA) awarded a professional engineering services contract to Garza Karhoff Engineering, LLC on September 1, 2026, under contract number RR-26-2041 (Bid Number 26-557THA-ENGCO-B-51413). The contract provides systemwide design engineering services on an on-call, as-needed, task order basis across the Illinois Tollway system. Services include design work for bridge repairs, pavement repairs, pavement marking improvements, and other required design services throughout the Tollway system. The contract is structured as a not-to-exceed task order agreement with a total compensation limit of $3.0 million for the initial seven-year term, which runs from September 1, 2026, through August 31, 2033. The contracting organization is classified under Engineering-Construction (ENGCONSTRUCT557).

Garza Karhoff Engineering, LLC was selected from a competitive field of 28 unsuccessful bidders through a Qualifications-Based Selection (QBS) procurement process administered by the State of Illinois Chief Procurement Office for General Services. As the prime contractor, the firm committed to meeting Business Enterprise Program participation goals of 73 percent Disadvantaged Business Enterprise (DBE) utilization and 5 percent Veteran-Owned Small Business (VOSB) participation. The primary point of contact for contract administration is Tiffany Merrill at the ISTHA offices located at 2700 Ogden Avenue, Downers Grove, Illinois 60515.