DDOT Centralized Dynamic Message Signs

Washington, DC

DDOT-Centralized-Dynamic-Message-Signs-Installation-ShoulderKCI was tasked by the District Department of Transportation (DDOT) to provide construction management and inspection services for the installation of eleven new dynamic message signs (DMS) across and above numerous interstates and highways in and around the District of Columbia, including I-395, I-695, I-295, Maryland Rt. 50 and Kenilworth Avenue, NE.  These installations were necessary in order to bring the District’s highway signing into compliance with the National Transportation Communication for ITS Protocol (NTCIP).

The DMS signs serve to provide notice of:

  • upcoming traffic conditions
  • incidents that affect the traveling public
  • unusual circumstances that the traveling public needs to be made aware of

The work was performed in phases in order to minimize disruption and limit the duration of lane closures.
Our construction management team assumed a proactive stance to aggressively anticipate potential problems and develop solutions before any of the sign locations were adversely impacted. KCI acted as an extension of the DDOT to help ensure the timely, complete, accurate flow of information between team members.

Specific features of work included:

  • Mobilization and demobilization, provision, and maintenance of work and storage space, and providing Engineer’s field facilities and employee training.
  • Establishment and maintenance of temporary traffic control.
  • Removal and disposal of existing sign structures.
  • Replacement of static signs currently on existing sign structures to be removed.
  • Removal and disposal of existing dynamic message signs.
  • Replacement of permanent pavement markings.
  • Furnishing and installing Light Emitting Diode (LED) DMS structures and furnishing, installing and testing LED DMS with associated equipment cabinets and central software as specified in this specification.
  • Furnishing, installing and testing National Transportation Communication for ITS protocol (NTCIP)-compliant LED DMS including furnishing and installing the support structures, galvanized rigid steel (GRS) conduit and cabling, and associated equipment cabinets