International Road Dynamics Corporation
International Road Dynamics Inc. (IRD) develops intelligent transportation systems solutions including commercial vehicle enforcement, advanced traffic management, bridge monitoring, toll collection, and access control. The company manufactures weigh-in-motion systems, controllers, portable axle weighers, radar speed signs, counters and classifiers, axle sensors, and toll products, along with associated software for intersection detection and enterprise traffic data reporting. IRD serves transportation and infrastructure industries with installation, maintenance, and related services.
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| International Road Dynamics Corporation | Spring Grove | IL | — | ACTIVE |
Compiled from federal records — EPA, OSHA, SAM.gov and the U.S. Census — and from the company’s own website. Federal source data is public domain. Each plant’s page names the source of every field.


