CHANGE ORDER NOTICE I-20-4526 Tri-State Tollway, DSGN REQ On-call and as-needed Phase II Eng. Svs.

The Toll Highway Authority (THA), through the Chief Procurement Office for General Services, is issuing a change order notice to extend Contract I-20-4526 for Tri-State Tollway Phase II on-call and as-needed engineering services, with a 14-day public notice period closing November 11, 2026. This is an amendment extending the current contract expiration of December 31, 2026 by approximately 180 days — not a new solicitation.

The incumbent contractor is Ciorba Group, Inc., originally awarded the contract on August 20, 2020 following board resolution 22083. The original contract value was $3,000,000 with no additional funds required for the one-year extension being requested. The scope involves design efforts for drainage improvements within Katherine Legge Park near the Hinsdale Oasis, including coordination with external parties and two submittals to the local agency/municipality, each requiring three to four months for review plus one additional month for final plan delivery — approximately ten months of work beyond the current expiration date.

The extension avoids loss of knowledge, history, and efficiency from transitioning to a different design services engineering contract. Specific completion dates have not yet been finalized and are driven by coordination timelines with external parties and the local agency review schedule. The change order notice is posted for the statutorily required 14-day public notice period.