The northbound Plano 15th Street exit ramp on US 75 is open after more than two years of closure. The ramp was closed in April 2017 for the US 75 Improvement Project by the Texas Department of Transportation between President George Bush Turnpike and Park Boulevard. The project is now in its final stages of construction and is expected to reach completion by the end of August, TxDOT spokesperson Emily McCann said.  The two-phase construction project expanded the Plano Parkway bridge and added lanes to US 75 and to a number of access ramps along PGBT.