1. Three major road widening projects affect commuters in and through Frisco: the Dallas North Tollway, FM 423 and US 380 projects. A. The DNT is being widened by one lane in either direction from the Sam Rayburn Tollway to Belt Line Road in Dallas. The project began in January 2016 and is expected to be complete in 2018. The second phase of the project, stretching from Lebanon Road to Eldorado Parkway, will also include construction of an additional lane on the northbound and southbound frontage roads. Completion of the project is scheduled for the end of 2017.