System Design, Integration and Installation of 11
Centralized Dynamic Message Signs (DMS) -
Washington, DC



  • Construction Inspection Services
  • On-Site Support


SAI, a Mead & Hunt Company, has been responsible for providing construction inspection services and ITS Project Management services for DDOT. The scope entailed inspection of the MOT, sign foundations, and installation of Dynamic Message Signs (DMS) at eleven locations on freeways and express ways.. In addition to these services, we also performed factory testing and system integration field testing.

Inspection of Installation includes:

  • Concrete testing
  • Traffic Control Signals
  • Hazards Identification Beacons
  • Intersection Control Beacons
  • Overhead Truss Sign Structures
  • Cantilever Sign Structures
  • Communications Systems
  • Factory Acceptance Testing (FAT)
  • Fiber optic Interconnect Systems
  • Electrical Service Equipment
  • Work Zone Traffic Control

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