Weigh-in Motion Scales and Systems Maintenance and Support Services

The Arizona Department of Transportation (ADOT) awarded contract CTR077709 to International Road Dynamics Corp., a technology services provider based in Spring Grove, Illinois, for Weigh-in-Motion (WIM) System Maintenance and Support Services. The contract, effective from September 11, 2025, to September 10, 2026, covers maintenance and technical support for WIM systems at multiple locations including Kingman and Nogales in Arizona, Sacaton, Arizona, and St. George, Utah. Services encompass scheduled preventative maintenance, on-call emergency repairs, system calibration, technical support, and comprehensive maintenance of in-road instrumentation, scales, sensors, electronics, cameras, and communication systems.

The contract includes multiple labor categories with defined hourly rates, ranging from $197 for a Remote Diagnostics Technician to $293 for an On-Site Field Engineer. Monthly maintenance services are priced separately for each location, with rates varying from $2,494 for Sacaton to $3,925 for Nogales. The contract was determined to be a sole-source procurement due to the proprietary nature of International Road Dynamics' equipment and software, with an estimated total value of approximately $650,000 over a potential five-year term. Additional contract provisions include compliance certifications regarding boycott policies, labor practices, and comprehensive insurance coverage spanning general liability, technology errors and omissions, and workers' compensation.