Mt. Clare Parking Expansion


Horner & Shifrin provided engineering services for an Ameren Illinois site expansion.


Horner & Shifrin provided Surveying and Civil/Site and Electrical Engineering services for a site expansion at Ameren’s Mt. Clare Operating Center in Mt. Clare, Illinois.

Topographic survey was performed on approximately 4 acres of the 5.5-acre property, including utility locates.  The site expansion consisted of increasing pavement for employee parking, expanding the equipment and material storage yard, replacing deteriorating pavement, and replacing security fencing.

Electrical Engineers provided light and electrical upgrades, making allowances for security upgrades, both outside and inside the Operating Center facility. Security upgrades included access control system and closed circuit television surveillance of the exterior yard, IT room and maintenance facility.  Both the access control system and CCTV were connected to the main headquarters for security department to monitor. The project required coordination with the Illinois Department of Transportation for work within the IDOT right-of-way, with the Illinois Environmental Protection Agency for Land Disturbance activities, and the City of Mt. Clare for permitting requirements.

Horner & Shifrin Environmental personnel provided documentation to the State Historic Preservation Office for cultural resource impacts and the Department of Natural Resources for Ecological Compliance.  H&S provided construction phase services including shop drawing review, site visits, design changes for unknown field conditions, punch list verification, and as-built drawings.





Mt. Clare, Illinois

Year Completed


Innovation. Agility.
Reliability. Horner & Shifrin.