• Overall view of current progress of Dallas North Tollway Phase 4A project.
  • Close up aerial view of 380 overpath construction of Dallas North Tollway Phase 4A project.
  • Close-up view of widened US 380 and progressing over-path construction for Dallas North Tollway Phase 4A project.
  • Aerial view of construction leading away from the construction of the bridge over US 380 for the Dallas North Tollway Phase 4A project.
  • Aerial view of ongoing bridge construction over US 380 in the Dallas North Tollway Phase 4A project.

Dallas North Tollway Phase 4A

Client: North Texas Tollway Authority
County: Collin
State: Texas
Services: Transportation Systems

According to Bisnow, since 2000, Collin County has experienced the highest sustained growth rate of any U.S. County with more than a half-million people. The North Texas Tollway Authority (NTTA) selected BGE to design the first extension of phase 4A of the Dallas North Tollway (DNT) extension project to address the vast growth in the area. Once all of phase 4 is completed (phases 4A and 4B), the DNT will be extended 13.7 miles north of US 380. It will directly link downtown Dallas and growing communities in Collin, Denton and Grayson counties.

BGE served as the design engineer for the first phase 4A project, which will extend the DNT main lanes from north of Rock Hill Road to north of US 380, including northbound and southbound bridges over US 380. This phase also includes completing the entrance and exit tolled ramps to First Street north of US 380 and constructing the electronic toll gantries for the Panther Creek Parkway ramps along the DNT south of US 380.

BGE provided plans, specifications and estimates per NTTA standards and in compliance with all governing entities involved, including TxDOT. The proposed design and construction plan contained complete roadway plans, traffic control plans, drainage, paving bridge and retaining wall structures, a plan for stormwater pollution prevention, signing, pavement markings and other miscellaneous items necessary to construct the project.

The project broke ground in early 2020, and opened to traffic to the public in the first quarter of 2023.