Beginning Tuesday, westbound traffic on Main Street in Frisco will share the south side of the road with eastbound traffic between Teel Parkway and FM 423. This switch will allow construction crews to widen and repair the north side of the roadway. The traffic switch will last about eight weeks. Main Street is being widened to six lanes from FM 423 to Dallas Parkway. The project includes installing a water line and underground power lines beneath the roadway’s median.