# Illinois BidBuy #26-557THA-ENGCO-B-54736

Illinois Tollway adds construction management services for Elgin O’Hare Western Access railroad bridge

**Posted:** November 02, 2026
**Respond By:** November 16, 2026
**Identifier:** 26-557THA-ENGCO-B-54736
**NAICS:** 541330

The Illinois State Toll Highway Authority added construction management support for a railroad bridge project under the Elgin O’Hare Western Access program.
- **Buyer:** Illinois State Toll Highway Authority, Engineering–Construction department.
- **Award change:** Second supplement to contract I-21-4744 adds Phase III construction management services for the railroad bridge over Grand Avenue, east of I-294, in DuPage County.
- **Services:** Construction management and inspection, project documentation, and closeout support; one service line item, with no part number specified.
- **Reason for added work:** The construction period was extended by utility relocation delays, railroad flagger requirements, and unforeseen conditions.
- **Value:** The change order is $995,000, increasing total contract authorization to $5,617,000.
- **Schedule:** Additional support is anticipated through construction completion in summer 2027, with closeout expected by the end of 2027.
- **OEMs and vendors:** No OEM or service vendor is identified in the provided information.

### Description

This notice concerns a second supplement to the Illinois State Toll Highway Authority’s contract I-21-4744 with STV Inc.; it explicitly states that it is not a solicitation. The contract provides Phase III construction management services for the Railroad Bridge Construction project involving Union Pacific Railroad over Grand Ave, east of I-294. The supplement adds construction management, inspection, documentation, and closeout services following construction extensions caused by utility relocation delays, UPRR flagger requirements, and unforeseen conditions. The second supplement amount is $995,000, bringing the total contract authorization to $5,617,000.

[View original listing](https://www.bidbuy.illinois.gov/bso/external/bidDetail.sda?docId=26-557THA-ENGCO-B-54736&external=true&parentUrl=close)