Northbound I-95 Express Toll Lane

For Maryland Transportation Authority’s (MDTA) I-95 Express Toll Lane Northbound Extension, there are significant Intelligent Transportation System (ITS) and All Electronic Tolling (AET) systems complementing the roadway improvements. These systems are critical to monitoring traffic operations, identifying and responding to incidents, maintaining safety and security, disseminating information to motorists, and collecting toll revenue. These ITS and AET systems are required for work associated with several planned construction contracts and potential park and ride facility contracts.

T3 Design is supporting the Express Toll Lane (ETL) program by preparing Intelligent Transportation Systems (ITS) design plans for I-95, from MD 43 to north of MD 24. T3 is responsible for preparing ITS and AET conceptual design for the following segments:

  1. Project-wide

  2. Southern Portion (Northbound ETL lanes from existing ETL lane terminus to MD 152)

  3. Middle Portion (Northbound ETL lanes within MD 152 interchange)

  4. Northern Portion (Northbound ETL from MD 152 interchange to northern terminus north of MD 24)

  5. Park and Ride Relocation (MD 152)

T3 is responsible for drafting and finalizing the communications overview plan for the project to detail how all ITS and AET devices will be connected to the communications infrastructure. They are developing communications plans that involve wiring details for the conduit contents to connect all ITS devices, gantry electrical diagrams, gantry electric service details, control plans, and generator details.

The plans include several toll gantries and 48-pair fiber, four-duct multi-duct conduit systems to create a physical redundant ring. T3 is developing final design plans, quantity summaries, and all required specifications.

ProjectWise is the platform used for design activities, and the design is developed using Bentley MicroStation.